TM 9-296 '7,2in Multiple Rocket Launcher M17' (1945)

7/27/2019 TM 9-296 '7,2in Multiple Rocket Launcher M17' (1945)

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WA R D E P A R T ME N T T E C H N IC AL MA N U A LTM 9-396

7.2- INCHJlULT IPLE R O C KE T

M 17A U N C H E R

WA R D E P A R T ME N T 9 JANUARY 1945

RESTRICTED D ISSEMINAT IONOFRESTRICTEDMATTER-No person is enti t led solely by virtue of his grade or posit ion toknowle dge or posse esion of classif ied matter. Suc h matter is entrustedonly to those individuals whos e off icial dut ies require such knowle dgeor possession. (See also paragraph 236,AR 380-5, 15 March 1944.)


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WAR DEPARTMENTWashington 25, D. C., 9 January 1945

TM 9-396, 7.2; inch Mult iple Rocket Launcher M17 , is publ ishedfor the information and guidance of all concern ed.A.G.

C300.7 (4 Jan 45)0.0. 300.5/7318 1B Y R D E RFH EE C R E T A R YF A R :

G. C. MARSHALL,Chief of Staff.

OFFICIAL:J. A. ULIO,

Major General,The Adjutant General.

DISTRIBU TION: AG F (5); ASF (2); T of Opt is (10); S Div ASF(l);PE,9(5);Dist0,9(5);DistBr0,9(3);Reg0, 9 (3); Decentralized Su b-O, 9 (3); A (10); CF Q(10); D (10). !j

(For explanation of symbo ls, see FM 21-6.)


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-

SECTION

INDEX

I.II .

III.IV.V.

VI.VII.

C O N T E N S

Introdu ction .._. ., ,, , ,Descript ion and functioning.Operation .............................Ammuni t ion ........ .:. ............Care a nd ma intena nce .. .. . .. .Installation of launcher .. .......References ...........................

Paragmphrl- 34-56-10

11-1718-1920-2223-25

Pagesl- 23-19

19-2323-29293131-5657-58

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TM 9.3967 .2~INCH MULTIPLE ROCKET LAUNC HRR Ml7

It


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TM 9.3961.3

RJBTFUCTEDSection I

1. SCOPE.*INTRODUCTION

a. This Technical M anua l is published for the information andguidance of personnel concerned with the operat ion a nd care of the7:2-inch Mult iple Rock et Laun cher M17. It also contains informa-tion required to identify and handle the rockets used with thislauncher and, in addit ion, information for the installation of thelauncher, which must be performed by ordnance personnel.2. CHA RAC TER ISTICS ( figs . 1 and 2).

a. The 7.2~inch Mult iple Rocket Launcher Ml7 is designed tobe mounted on the Medium Tanks M4, M4A1, M4A2, M4A3, M4A4,and M4A6. I t has a capacity of 20 rockets which c an be f i red elec-tr ically either in single or automatic f ire. The launcher is controlledin azimuth and elevat ion with the sa me controls as those used forthe 75-mm gun mounte d in the tank turret. I t can be jet tisoned bythe tank crew by mean s of hydraul ic controls operated from withinthe turret of the tank.3. DATA.We ight of emp ty laun che r ,,.,............................,,.,,,: .........: 4,6 15 lbLe ng th of lau nche r ,.,...............,.,,.,,,.,,,.,.,...............,,,.,,..,,...,..... 10 5 in.Width of launcher.. . : . . : . 105 in.Limits of elevation:Maximum +25 degDepres sion . . -5 degLimits of travers e in deg ree s right or left. ,.. ,, .,, .., , 360 degRocket, HE, T37Weig ht .,.,...,............,.,,..,.: ,.,.,.........,......,.,..,,.,.,.,.,.................... 61 lbLen gth ,....... ..,.. 35 in.Maximu m velocity . , 160 ft per setMa xim um ran ge .,,..,,.. ,, ...,,.,........... 23 0 ydRocket, chemical, T2 1We igh t .,....,.................,.,, .,.,, , . ,.. ,.,, .,,..,..... 51 .8 lbLen gth ., . ,..,.... 50 in.Ma xim um velocity .,......................,.,.,.,,,,.................. 80 ft per setMax imu m range ,, , . , , . ,. . : , , , , . , , . , 3,430 yd (at 43& gelevat&)


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TM 9.3963

7.2.INCH MULTIPLE ROC KET LAUNC HER Ml7

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TM 9.3964

Section IIDESCRIPTION AND FUNCTIONING

4. DESCRIPTION.a. General. The principal ~componentsof the materiel are asfollows:(1) Launche r rail assembly.(2) Tank attachments.(3) Trunnion supports.(4) Elevating strut.(5) Equipm ent foi operating the launcher doors.(6) Quadrant assembly.(7) Firing mech anism.(8) Equipm ent for jettisoning the launcher.b. Launche r Rail Asse mbly (f igs. 3 to 8).( 1) The launcher rail assemb ly consists principally of 20 rails, intwo layers o@ O each, from which the rockets are f ired. The rails areof sheet steel and 90 inches long. The bottom and sides of the railassembly are protected by armo r plate. On ea ch side there are twohooks, one near each upper corner, by means of which the launcherrail ass emb ly can be lift id for installation, rem oval, and repair (figs.

3 and 4).(2) On,ea ch side of the rail Bssem bly, near the rear end; there isa trunnion on which the launcher rotates in elevation (f igs. 3 and 4).On each side toward the front there is a bracket to wh ich one end ofthe equil ibrator spring assenibly is secured (f igs. 3 and 4). Theother end of equil ibrator spring is secured by wire to the trwnion(when not assembled) and latched to the trunnion support (whenassembled ). The function of the equil ibrator spring assemb ly is toneutralize the unbalanced weight of the launcher an d to reduce theeffort required t0 elevate it.,(3) At the rear of each rail, there is a spring-operated tail latchand two electrical contactors (f ig. 5). Wh en the rockets are properlyloaded in the launcher, the tail latch eng ages he stabil izer ring of therocket and prevents the rocket from sliding before being f ired. Thecontactors of the rail establish contact with the stabilizer rings of therocket to w hich the leads of rocket motor igniter are connected, andthus serves to complete ,the circuit for f ir ing. The forward pr groundcontactor actuates, a microswitch (whe n rocket is loaded in posit ion)to comp lete a circuit to the indicator light bulbs on the front of firingmechanism box. Thus, it is possible to tel l which rails are loaded and

which ar e empty. The indicator switches and electrical connectiot i areprotected by two armo r plate covers; the covers can be opened for in-spection and repair (f ig. 6).3


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TM 9-3964

7.2~INCH MULTIPLE ROCKET LAUNCHER Ml7


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TM 9-396DESCRIPTION AND FUNCTIONING


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TM 9.3964

7.2.INCH M.Il1T lPl .E RO CKET LAUNC HER Ml7

Figure I i-Tail Latch ,md Confactors(4) The front of the rail assembly is protected by two armor platedoors hinged on top and bottom (f igs. 3 and 4). The d oors are gearedtogether at their ends so that they open and close together. Thedoors are operated by a n exactor control transmitter mou nted inthe tank turret and two exactor control receivers mounted on theunder side of the lower door toward the left ( f ig. 7). Nea r the exactorcontrol receivers are two interrupter switches (fig. 7). The e xactorcontrol receivers and switches are protected by an armor platecover (fig. 7).(5) Behind the box for the exactors and switches is a hingedarmor plate which serves fo prot&t the hydraulic and electricalcables leading from the launcher into the tank turret.(6) On the under side of the rail assembly, toward the front, is athreaded block into which is screwe d in on e end of the elevating strut(f ig. 8); the other end of the strut is latched,to the gun shield adapterso that the gun an d launcher are elevated together.(7) The tw o plates on the under side of the rail assembly, near

the side s, serve as rails for the jettisoning rollers o n the tank turretwhe n the launcher is jett isoned.e. Tank Attachments. The components descr ibed below are

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/ TM 9-3964

DESCRIPTION AND FUNCTIQNING

Figure b-Microswitches and Electr ical Connecfions onLauncher Rai l Llr remblywelde d to the tank and serve to sec ure the launcher rail assem bly tothe tank, and to elevate and to jett ison the launcher.

(1) GUN SHIELDAD AP TE R fig. 9). This adapter f its around thegun tube and is welde d to the gun shield. It has two trunnions, oneon each side, to wh ich the lower e nd of the elevating strut is latched.(2) TIWN NION PIN BRA &ET S ( fig. 10). Theware t tio t runnionpin b rackets welde d to the tank, one on each side of the turret. Eac hbracket has a cylindrical~surface at the outer end which &ves as abearing for the trunnion stipport by m ean s of which the launcher issupported on the tank.(3) TRU~ NION LAT CH PLA TES ( fig. 10). There are two latchplates welded to the tank, one on each side of the turret abov e thetrunnion pin brack ets. Eac h latch plate has a f ixed pin and a hingedpin at its outer,end. The hinged pin is connected to the low er jett ison-ing latch on the trunnion support by m eans of which the support canbe diseng aged from the latch plate for jett isoning. The f ixed pin bearsagainst a projection on the front edge of the trunnion support and pre-vents the trunnion support from lif t ing off the trunnion pin bracketexcept when launcher is to be jett isoned.

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TM 9.3964

7.2-INCH MULTIPLE ROC KET LAUNCHER Ml7

Figure 7-Exactor Control Receivers and lnf&wpfer Switcherfor Doors

Figure 8--Block for Securing Elevofing Strut to LowcharRoll Assembly8


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TM 9.3964

DESCRIPTION AND FUNCTIONING

Figure 9-Gun Shield Adopter Welded to Gu n Shie ld(4) JETTISONRO LLE R BRA CKE TS f ig. 10). Each of these twobrackets is welded to the top side of the turret. Each carr ies a jett i-soning roller on which the launcher r ides when be ing jett isoned.d. Tmn nion Supporte ( fig. 11).(1) The two trunnion supports are the mea ns for attaching thelauncher rail assem bly to the tank turret. .Each support is about 3feet long and is made with an offset, becaus e the launc her is wider

than the tank turret.(2) At the upper end of each trunnion support is the bearing forthe elevating trunnion. It is about this trunnion that the launcherassembly rotates in elevation.(3) At the lower end of each trunnion support is the bearingfor the trunnion pin bracket which is welded to the tank turret. Thisbearing is semicircular, so that it m ay pull away from the trunnionpin bracket when jett isoning takes place.(4) On the front edg e of each trunnion support, sl ightly abovethe offset, a small rectangular piece of steel is welded. This projec-

t ion b ears on the und er side of the f ixed pin of the latch plate, andprevents the trunnion support from lif t ing off the trunnion pinbrackets, except when it is desired to jett ison the launcher.9


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TM 9.39647.2 .INCH MULTIPLE ROCKET LAUNCHER Ml7

Figure IO-Bracketi and Plates Wel ded to Turret(5) Some what above,, theseprojections there is a cleviswnstruc-t ion with latches extendin g forward from the front side of each trun-nion support . These are for secur ing the crossheadbat the rear endsof the equil ibrator spring assemb lies. The equil ibrator spring latchesare connecte d by l inks to the upper jettisoning latches. A lowerjett isoning latch is located on the outside of each trutmion supporttoward the rear edge and is so posit ioned as to ho ok over the hingedpin of the correspon ding latch plate. The jett isoning latches are con-

nected to the exactor control receivers mounted sl ight ly above themby mea ns of l inks. The linkage an d- the exacto r control receiversare so.arranged that when the exactor control receivers are actuated,they operate the jett isoning latches, thereby releasing the trunnionsupports from the trunnion pin brackets and the latch plates. Anarmor plate cover is bolted to each trunnion support in order toprotect the exactor coiltrol receivers, latches, and l inkage.e. Elevating Strut (f ig. 12). The elevating strut connec ts theforward end of the launcher assembly with the gun shield adapter.On the lower en d of the elevating strut is a clevis construction with

latches which engage he two trunnions of the adapter. Th ese latchesare actuated by an exactor control receiver mounted about halfwayup the elevating strut. This exactor control receiver operates simul-


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-TM 9.396

4DESCRIPTION AND FUNCTIONING

Figure I I--Trunnion Support and Cove rtaneously with the. two on the trunnion supports and is the me ansof disconnecting the elevating strut from the trunnion adapter whenjett isoning takes place. Theapp er end of the.,elevating strut is pro-vided w ith the screw f itt ing which is used to adjust the launche rassem bly so it wil l be parallel w ith the gun tube. The exactor controlreceiver, l inkage, and latches of the elevating strut are protectedby an armor plate s%ver.

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LA&MS

Figure 12-Elevat ing St ru t and Coverf. Equ ip men t fo r Opera t ing he Lau nch erDo ors ( f igs . 7 a n d13).(1) Th e doors are operated by two exactor cont rol hydrau lict ransmit ters ( f ig. 13) mo unt ed as a single unit in the tank turret ,and two exactor cont rol hydrau l ic rece ivers mou nted on the unde rside of the lower doo r ( fig. 7). Th e con nect io n f rom the two trans-mit ters to the two receivers is by a single hydraul ic l ine. This l ine

pass es hrough a per iscope b lock equ ippe d with d isconnect f it tingswhich can be separated qu ick ly wh en the launcher is jet t isoned.(2) To the lef t of the exacto r contro l receivers are two inter-

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TM 9.3964

DESCRIPTION AND FUNCTIONING


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TM 9-3964

7 .2~ INCH MULTIPLE ROCKET LAUNCH ER Ml7rupter switches (f ig. 7). The se switches are operate d by the closingaction of the lower door. The function of these switches is to inter-rupt the f ir ing circuit wh en the doors are not open.

g. Qua drant (f ig. 14).(1) The quadr ant is inst+lled in the tank turret and is used toaim the launcher in elevation. The bracket is welded to the ceil ing ofthe tank turret and the plate of the quadrant is attached to the bracketby three Allen-type screws.(2) The elevation scale plate is provided w ith a l&e1 vial. Theelevation scale ip graduated in degrees f rom zero to +50, and f romzero to -20, with every 10 degre es mark ed. The scale plate is i l lumi-nated by a l ight bulb. The lead from the l ight bulb is spliced to thelead of the dome l ight bulb on the left side of the 7 5-m m gun.(3) The elevation plate is l inked to the periscope by m ean s of al ink and holder connec tor so that, as the pe riscope is t i lted, the eleva-t ion scale plate rotates on its pivot. In this m anne r it is possible to t i l tthe periscope unti l the vial bubble is centered. T he elevation scaleplate can then be locked in position by m eans of the locking knob.(4) The elevation indicator is conne cted by l inkage to the ad-justing rod of the gun elevating mechanism. By elevating the gun(and launcher) the l inkage wil l mo ve the indicator to the desiredelevation reading on the plate.h. Firing Mec hanism (f igs. 15 and 16).(1) The f iring mec hanism ,for launching the rockets is mo untedin the tank turret and operates on a 24-&t source f rom the tank bat-ter ies. The mechanism is housed in a steel case having tw o bracketson each side for attaching it to the turret wall.(2) The me chan ism has an indicator circuit consist ing of 20light bulbs posit ioned o n a dial face over num bers .correSpo nding tothe 20 conductor points. T hese bulbs are operate d by a circuit to the

launcher. The circular selective switch for the 20 individual conduc torpaints is provided with a knob which can be turned only clockwise toany individual conductor. W hen a rocket is properly loaded in alauncher rail , the corresponding indicator l ight bulb wil l be i l lumi-nated. W hen the launcher rail is not loade d, the co rresponding indi-cator light bulb wil l not be i l luminated.(3) On the top of the left side of the box there is a receptacle forthe safety plug. Attached to the safety, plug is a loading dia gram tagto record the type of rocket on each launcher rail. NO TE: The safety

plug must be removed from the box and kept in the personal posses-sion of gunn er until ready to fire.(4) On the middle of the left side of the box there is a receptt iclefor the f ir ing cable. The f ir ing cable leads from the box to the launcher

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TM 9-3964

DESCRIPTION AND FUNCTIONINGrail ass embly by w ay of the periscope block; this is for ea se n d iscon-necting when the launcher is to be jett isoned.

(5) On the bottom of the left side of the box, there is a receptaclefor the f ir ing cable with the trigger m echan ism for f ir ing the rockets.(6) On the middle of the right side of the box there is a receptaclefor the indicator l ight cable. The indicator l ight c able leads from thebox to the launcher rail assem bly by w ay of the periscope block; this

is for ease n disconnecting when the launcher is to be jett isoned.(7) On the bottom of the right side of the box there is a receptaclefor the 24-volt battery lead which has a 20-amp ere fuse in the l inecord.(8) The two l ight bulbs on lower front of box toward the right,under the markin g BA TT ER Y PIMT , indicate battery current w henthey are i l luminat*d.(9) The two l ight bulbs on lower front of box towar d the left ,under the ma rking FIR ING PILO T, wil l he il luminated to indicatefir ing current when the safety plug is in place and launcher doorsare open.(10) The selector switch located below the BA TPE RY PILO Tlight bulbs can be set either at SELE CTIV E or AU TO M AT IC . With theswitch set at SEL EC TIV E, pressing of the trigger will f ire the rocket

correspo nding to the num ber at which the indicator is set on the dialface. By resett ing the indicator, to another selection on the dial face,another rocket q~n Be f ired. With the switch set at AuT oMA TIc,pressing of the tngger wil l f ire the rockets automatically. Firing wil lcontinue as long as the trigger is presse d or unti l the rockets are usedup. The rate of automatic f ir ing can be adjusted by turning the t imingknob located below the FIR ING PILOT l ight bul.bs. Turning of thetiming knob sets a rheostat in the b ox. I t is possible to regulate thetime interval betw een successive ir ing of the rockets from less thanone-half second to more than 2 seconds.i . Equ ipm ent for Jett isoning ( f igs. 17 and 18).(1) The equipm ent for jett isoning the launcher consists of theexactor control transmitter, periscope block, and exactor coritrol re-ceivers with l inkage on the trunnion supports and on the elevatingstrut.(2) E X A C T O R C O N T R O LkANSMITTER ( f i g . 17). The transmit-ter serves a double purpose-it is used to f il l the receivers and toactuate the receivers and l inkage to jett ison the launcher. The trsns-mitter consists of three separate units--one for the receiver on the,elevating strut and one each for the trunnion supports. The hydraulicl ine from each unit is conne cted to its respective receiver by w ay ofthe periscope; this is for eq se in disconne cting when the launcher isto b e jett isoned.

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a.

TM 9-3964


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TM 9-3964DESCRIPTION AND FUNCTIONING


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TM 9.3964

7 .2~ INCH MULTIPLE ROCKET LAUNCHER Ml7

Figure 17-lkactor Control Transmitters for Jett isoning(3) PER ISCO PE OC K (fig. 18). The periscope block is 8 de-vice which mak es it poss ible to sepa rate quickly the f ir ing cables andhydraulic l ines wh en the launcher is jett isoned. I t consists of twojett ison guides conne cted at their ends to two blocks. Both the topsplit block (wood ) and the lower block (metal) are groov ed to ac-com mo date the nipples and disconnect f i tt ings. The hydraulic l inesfrom the transmitter are conne cted to the lowe r ends of the discon nectf itt ings; the hydraulic l ines from the receivers are connec ted to theupper e nds of the nipples. The f ir ing cable and indicator , l ight cablefrom the launcher enter the jettison guides from the top; the f ir ingcable and indicator l ight c able from the f ir ing mec hanism are joinedto the jett ison guides by me ans of receptacles on the sides. The lowerpart of the periscope block is posit ioned inside the tank and the upperpart outside the tank. The upper part is conne cted to the launcher bya chain so that i t wil l be pulled out wh en the launc her is jett isoned.(4) EXACTOR ONTRO L ECEIVERSfigs. 11 and 12). An exactorcontrol receiver is mou nted on the elevating strut and on ea ch of the

support ing tnmn ions. The receivers are conne cted to the jett isoninglatches by me ans of l inks. The l inkage an d receivers on the trunnionsupports are so arranged that when the receivers are actuated by thetransmitters in the tank turret, the y opera te the jett isoning latches,18


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OPERATIONTM 9-396

4-b

RAPO m3 3Figure 1bPeriscope hock

thereby releasing the trunnion supports from the trunnion pin bracketsand the latch plates. S imultaneously, the jett isoning latches on theelevating strut release the strut from the gun shield adapter.5 . FUNCTIONING.

a. W hen the trigger of the f ir ing cable is pressed, t co mpletes,thefir ing circuit so that an electric current can pass through the rocket.b. The pa ssage of the electric current through the rocker setsoff the rocket motor igniter which in turn ignites the propell ing charge.The rearward escape of the powder gases through a jet forces therocket out of the launcher. Propulsion of the rocket is by jet actionof the propellent pow der and henc e there is no recoil.

6 . LOADING.

Section II IOPERATION

CAUTION: Before proceeding to load, remove the safety plugfrom the f i r ing mechanism box. Safety plug m ust be kept in per-

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TM 9.396b-8

7.2. INCH MULTIPLE ROCK ET LAUNC HER Ml7sonal possession of gunner and is to be inserted into box onfy whenready to f ire.a. Slide the assemb led rocket head first, into the breech oflaunch er rail (fig. 19) until the tail is eng age d by the tail latch(fig. 20).

b. Record the types of rockets loaded and. the correspondinglauncher rail numb ers on the loading diagram tag.e. The ,two BA TT ER Y PI& I+ light bu lbs will indicate ba tterycurrent. _d. The light bulbs o n the dial f ace will indicate th e rockets inlauncher rai ls. If a rocket is on a launcher rai l a nd the correspo ndingindicator l ight bulb d oes not i l luminate, i t m ay be due to a defectivel ight bulb or incorrect adjustment of indicator microswitch. Replacethe bulb with one from the dial that does i l luminate. If bulb i l lumi-nates, the previous bu lb was defective an d must be replaced. Ifbulb does not i l luminate, the switch should be adjusted a s describedin paragraph 18.

7. SIGHTING.a. Indirect.(1) Manipulate the periscope holder unti l the bubble vial on thequa dran t is level; cla mp th e elevation scale plate in this position.(2) Elevate the gun and launcher until the indicator points tothe desired angle of elevation on the plate.b. Direct.(1) Sight the target through periscope and bring target to de-sired point on reticle pattern.(2) Elevate gun until indicator is at desired reading.8. FIRING.a. Open the launcher doors by pushing the two handles oftiansmitter forwa rd a full stroke and latching in position,.b. Insert the safety plug into the fir ing mech anism box. Thetwo FIR ING PIL OT light bulbs on the box will indicate firing current.c. Selective Fir ing. For selective or single firing, set the indi-cator on dial face to rocket selected from tag, turn the selector switchto SEL ECTI VE, and press the tr igger to discharge the rocket.d. Automat ic Fir ing.(1) For autom atic f ir ing, set the indicator on dial face to de-sired starting position, turn the selector switch to AUTO MAT IC, and

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TM 9.3968

OPERATION

Figure 19-Loading the Rockets Into Launch er

Figure 20-Rocket Proper ly Loaded in Launcher21


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TM 9-3968

7.2~INCH M ULTIPLE ROCKET LAUNCHER Ml7

Figure 21-Launc her in Posit ion for Jettisoning\press the tr igger. Fir ing wil l continue as long as the trigger ispressed and there is ammu nit ion in the launcher.

(2) The t ime interval betwee n successive rounds can be variedfrom less than one-half secon d to m ore tha n 2 seco nds by sett ing thetiming knob.,(3) It is possible to fire single rounds by releasing the pressure onthe ,tr igger before the indicator has mov ed to the next num ber on thedial face.CAUTION: As won as f i ring ceases, remove safety plug from

firing mec h.$nfsm box.22


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TM 9.3969.11

AMMUNITION .9 . UNLOAD~G.

CAUTION: & lake certain safety plug is remo ved from box beforeproceedin$ to unload.a. Press the tai l latch lever ~forwar d to allow rocket to clear andremove rocket from launcher rail .b. I f rocket is not fired, disassemble, and return comp onents tooriginal condit ion and packings.

10. JETTISONING.a. Rotate the turret 9 0 degrees until launcher is at r ight ang lesto direction of travel of tank.b. Elevate the launch er 25 d egrees or ful l range of elevatinggear (f ig. 21).e. Disconnect the f iring cable and indicator l ight cable from theperiscope block in turret.d. Remove cover from , jett isoning transmitters and pull handlesto rear.

,> Section IVAMMUNITION

11. GENERAL.a. Classification. Rockets for use with the .?-inch Launch erMl7 are issued , in the form of unasse mbled complete ro unds. Theyare classif ied as high-explosive, chemical, and practice. The high-explosive rocket is intended for use against reinforced concrete ob-

struction and forti f iCations. The chemical rocket contains a chemicalcharge with a bunter to open the shell and distribute the contentsat the,target.,,The practice rocket shell contains inert f i l ler and dumm yfuze, but is otherwise similar to the service round.b. Components .(1) SHE LL. The rocket shell (f igs. 22 and 23) is a pear-sha pedcasing of thin m &l containing the charge. A fuze cavity in the nose(T21) or base (T37) opens into a well which, receives the bunter orbooster. The rear en d of the shell has .a threaded attachment for

assembling the mo tor. Base-fuzed shells are issued with the fuze andbooster assem bled. Nose-faze d shells are issued with fuze and bunterseparate. In both cases, he fuze opening is protkcted by a shippingPlW.

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TM, 9.39611.1,3

7 .2 . INCH MULTIPLE ROCKET LAUNCHER Ml7(2) MO TO R. The rocket m otor consists essential ly of a cylin-drical cham ber closed at one end and constricted at the other to fo rma nozzle. I t contains the propell ing charge and an electric igniter.The motor body is a steel tube with threading at the front end forattachment to the shell, and with a f in assembly attached to the rear.The propell ing charge consists of a cylindrical grain of rocket pro-pellant with a single axial perforation. The igniter is assem bled inthe front end of the mo tor and consists of a container .sf black powd erwith an electric squib. The squib wires pass through the propellantand the nozzle, and are connected to the f in s hrouds which serveas contacts for the launcher f ir ing mecha nism. T he f in assembly con-

sists of four radial vanes strengthened by two cylindrical shrouds.The rear shroud is grounded through the f in to the rocket body;the fron t shro ud is electrically insulated and serves as the live ignitercontact. Motors. of various diameters are supplied with 7.2-&hrockets, depende nt upon requiremen ts for velocity, range, or otherballistic characteristics.12 . COMP LETE ROUNDS.

a. Authorized Round s. The rounds authorized for use in thislauncher are:RO CK ET , HE, 7.2, T37, w/FU ZE, rocket, BD, Mk. 146 (f igs. 24and 25)ROC KET , gas, CG, 7.2, T21, w/FUZE , rocket, PD, Mk. 147 andBUR STE R (figs. 48 and 52)RO CK ET , practice, 7.2, T44 (El)

b. Data. ryp . endMode lHE. 31 Cboln iMl.Z IW E 1 4 ,Len gth ,. ..,.........,.,.,........ 35 in. 50 in.Weig ht .,.......................... 61 lb 51.8 lbMaximum velocity.. 160 ft per set 680 ft per setMax imu m range ,. .. . . ., ., 2 30 yd 3430 (at 43deg elev.) ydMo tor ..,, ........,.......... 2.2 5,- Mk . 3 3.25, M k. 5, Mk . 7Fa ze .,.,... .,,., ................ BD , Mk . 14 6 PD, Mk. 147, w/BursterShell charge ......,,,........., Plastic H E, 32 lb Ga s CG , 20,lb13 . FUZ E MK. 146 .

This fuze is the Navy Fuze Mk. 146. It is a base-detonatingfuzaewhich has been installed in the rear opening of the rocket shell be-fore issue to troops. The fuze is protected during shipment of the am -munit ion by m eans of the shipping plug. There are no safety pinsor wires to be removed from the fuze prior to loading the launcher.Armin g of the fuze is accomplished in two stages: one stage is the

24


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pressure of thethe other stage

TM 9.39613.15AMMUNITION

burning propellant which part ial ly arms the fuze;is acceleration of the round in f l ight. Wh en fullyarmed, a round wi ll be detonated by a drop on i ts nose. CAU TION:There is zm way to determine whether or not a fuze has become armeddue to ignition and resultant pressure of the propel lant. Duds andthose rounds which have had their propellant charges t i red must Behandled careful ly because the fuze, may be armed. Do not attemptto remove the fuze. D ispose of such ammunit ion in accordance withre&lations for disposal and destruction of unserviceab le amm unf-tion.14 . FUZE MK. 147 .

a. Descr ipt ion. This fuze is the Navy Fuze Mk. 147 (f ig. 26).I t is a vane-arm ing, point-detonating fuze. In the unarmed condit ion,the detonator shutter is held out of f ir ing posit ion by the f ir ing pinwhich is attached to the propeller, (arming vane). The propeller isheld by a lock pin on a set-back collar. Propeller and collar are heldin posit ion in storage and transit by a safety wire which mus t beremoved just prior to loading the rocket into the launcher. On f ir ing,set-back releases the propeller which turns in the air stream, ad-vancing the f iring pin unti l the detonator shutter is free; then thedetonator mo ves into l ine with the fir ing pin a nd boaster lead. Thebunter is assem bled tcz the fuze and a shipping guar d is taped overthe propeller as issued.

b. Inspect ion Prior to Use.(1) ~Removepropeller guard. Inspect fuze for corrosion, dam agedthreads, bent van es, and other evidence s of unserviceabil i ty. Bentbanes ma y be straightened but o ther defects require destruction ofthe fuze.(2) Be sure that the lock pin prevents the propeller from turn-

ing in either direction.(3) Rem ove safety wire and push down on the propeller lockpin to be sure the set-back collar is free to m ove, and that i t springsback into posit ion. Be sure the propeller is not permitted to turnduring this test. Replac e safety wire.(4) I f fuze is not to be used immediately, replace propellerguard and return fuze to packings.

1 5 . A S S E M B L Y O F C O M P L E T E R O U N D S .a . HE Rocke t T37 .(1) Rem ove the shipping plug from the rocket shell. Inspectthe cavity to mak e certain it is clean and free from foreign matter.

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TM 9.396157 .2. INCH MULTIPLE ROCKET LAUNCH ER Ml7

Figure 22-Chemical Rocket 721. Assembled

Figure 23-Rocket T21. Com ponents(2) Screw the motor adapter into the opening in thenback of the rocket shell. Tighten the adapter securely.(3) Scre w the rocket motor fully into the motor adapter. Backthe motor off one-half turn. Hold the rocket shell securely and turnthe motor quickly to seat it f irmly in the shell.(4) Re mo ve the short-circuit ing cl ip from the stabilizer f ins.b. Chemical Rocket T21.(1) Rem ove shipping plugs f rom motor and shell . Inspect forclear threads and absenc eof foreign m aterial.(2) Screw the motor into the shell and t ighten with a pipe wrenc h.(3) Insert fuze and bunter assem bly into well and screti in han d-t ight. Do not use force.

7.6


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TM 9-39615AMMUNIT ION

Figure 24-HE Rocket 737, Assembled

Figure 25-Rocket 737. Comp onents(4) Rem ove short-circuit ing clip from shrouds and propellerguard and safety wire from fuze.e. Return to Storage. In case the rocket is not f ired, disasse m-ble and return compone nts to or iginal condit ion and packings.

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TM 9.396lb-17

7 .2~ INCN MULTIPLL : ROCKE T LAUNCHER Ml7CLoYiRELATE LI-eACIPRING

Figure 2bF&e Mk. 147, Sectional View16. PRECAUTIONS.a. Do not f ire the round below 10F or above 120F.b. The rearw ard blast of the rocket may cover 60 feet. Personnel

and combustible materiel must be clear of the rearward blast.17 . RANGE DATA.a. The r ange elevation data in the tables below are provisional

and may be changed to agree with observation of f ire.TABLE I .

PROVISIONAL FIRING TABLE-ROC KET, HE, 72, T37CAlJT ION: IVote hat al l *en&v are given$I feet.

R A N G E ELEVATION (mi l s lT E M P E R A T U R E

(feet1 IOF 7 O O P 120F50100150

200250300400500600

85 48118 80150 ,111185 143220 176260 210338 281430 364548 462

28

40711031361702042763644.52


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TM 9.39617.18

CARE AND MAINTENANCE\ TAB LE IL

PROVISIONAL FIRING TABLE-ROCKET,CHE MIC AL, 7.2, T2 1

R A N G E * T IME OF PR OBABL E ER R OR * *EL EVATION FL IGH T(yards1 Range Deflectionlmilr) (seconds1 (yards) Imi ld200 62 1. 1 190 26400 87 2.0 160 26600 112 3.0 173 26800 137 4.0 167 26

1,000 164 5.0 162 261,200 192 6.1 158 261,400 222 7.2 154 261,600 252 8.4 1.50 261,800 284 9.6 145 262,000 316 10.8 139 262,200 352 12.0 131 262,400 389 13.4 122 262,600 430 14.9 110 262,800 478 16.5 96 263,000 533 18.3 79 263,200 604 20.9 59 263,400 722' 24.1 35 26

"With respect .a he m"de.**sin& shot fire.NOTE: Maxim um range: 3,430 yd (at 764 mils elevation). Effectof chang e in temper ature of powd er is negligible.

Section VCARE AND MAINTENANCE

18 . ADJUSTMENT OF IND ICATOR L IGHT SWITCH.CAUTION: The fol lowing operat ions may be performed withrocket in launcher rail but safety plug must first be remov ed from

firing mechanism box.a Ope n the cover for the electrical leads at rear of launch&.b. Rem ove lead to microswitch from its clip (f ig. 27).

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TM 9.396107.2~INCH M ULTIPLE ROCKE T LAUNCHER Ml7

IA PD PSI66Figure 27-Adjusting Microswitch

Figure 28--Replac ement of Tail Latch Insulation Block30


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TM 9439618-21

, INSTALLATION OF LAUNCHERe. Back up the lower adjusting nut and t ighten the upper adjust-ing nut unti l the switch bec omes operative and indicator lamp on

dial i l luminates whe n rocket is in launcher rail.19 . REPLACEM ENT OF TAIi LATCH INSULATION BLOCK.

a. The tail latch insulation block wil l, through use, beco me dis-torted and wcarn so that the metal block in front of the insulationblock will fail to ma ke contac t with stabilizer ring of rocket. Thisma y result in a short circuit with a resulting m isfire.b. To replace the insulation block, proceed as follows: Unsc rewthe Allen set screw from metal block (f ig. 28), and remove the m etal

block and insulation block. Replace insulation block a nd assemble.

I . Section VI,INSTALLATION OF LAUNC HER

CAUTION: This in.stalJation to be perfo rmed by ordna ncepersonnel only.20. GENERAL.

a. The lau ncher can be installed on the tank with or without theuse of the assem bling j ig as described in paragraphs 21 and 22.b. Before proce eding to install the launcher by either metho d,the following parts must be remo ved from the tank turret:(1) Rem ove the gun rest traveling clip &nn the top of the latchring (fig. 29).(2) Rem ove the gun front sight vane from the top of the turret

(fig. 29).(3) Rem ove the guard and cover from periscope on left side ofturret (fig. 29).(4) Remo ve 3 inches of metal at 30-degree angle on rear ofaerial cup on turret (fig. 29).

21 . INSTALLATION OF LAUNC HER BY MEANS OF AS-SEM BLING J IG.a. Assem bling J ig. The assembling j ig is a device for deter-

mining the posit ions at which the tank attachments which supportthe launcher an d facili tate its jett isoning are to be welded to thetank turret.


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217.2 .INCH MULTIPLE ROCK ET LAUNC HER, Ml7

Figure 29-View of Tank Turref Showing Parts Rem ovedb. Weld ing o f Tank At tachments.(1) Level the tank and set the 75-m m gun in the turret at zeroelevation and zero traverse.(2) Open , turret h&h door to rear and set the assem bling j igover the turret (f igs. 30 and 31). Aline it so that stop plate bearsagainst muzzle of gun and clamp i t on the gun.(3) Che ck the gage plates to center, and level the j ig on themac hined turret surface by adjusting the set screw s on the j ig.(4) Cut templates for each of the trunnion pin brackets (f ig. 32),mar k the brackets from these templates, and cut along the l ines. Fitthe brackets to the jig an d weld to the turret (f ig. 33).(5) Cut a template from heav y cardboard for one of the trunnionlatch plates so that i t f i ts snugly betw een the j ig and the turret.Mark the latch plate from this template and cut to the l ine. Fit thelatch plate to the j ig and weld to the turret (f ig. 34).(6) Cut templates for each of the jett ison roller brackets (f ig.35), mar k the brackets from these templates, and cut along the l ines.Rem ove the toi lers from the brackets, f it the brackets to the j ig, and

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TM 9.39621

INSTALLATION OF LAUNCH ER


38/63

TM 9-39621

7 .2~ INCH MULTIPLE RO CKET LAUNCHER Ml7

Figure 31-Assem bling Jig on Tank-Rear View

Figure 32-Cuft ing Temp lates for the Trunnion Pin Brackets34


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TM 9.39621

INSTALLATION OF LAUNCHER

Figure 33-Fiffing Trunnion Pin Bracket lo Turret T o Be Weld ed

Figure 34-Fiffing Trunnion Latch Plate to Turret To Be Welded35


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TM 9-39621

7.2~INCH MULTIPLE RO CKET LAUNCHER Ml7

Figure 36Fiff ing Jett ison Roller Bracket to Turret To Be Weld ed36


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TM 9.39621


Figure 37-Fitting Support to Bracket a nd Turret T o Be Weld ed-REINFORCEMEl T O N A R M

Figure 38-Gun Shield Adapter37


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TM 9.396217 .2~ INCH MULTIPLE ROCK ET LAUNCHER Ml7

weld to the turret (f ig. 36). Fit support to bracket and weld (f ig.37). Replace rollers on brackets.NOTE: Use modif ied 18-8 welding rods. Temperature of turretand parts to be welded should not be less than 70 F.

(7) Rem ove the j ig from the turret.(8) Measure and mark on the 75-mm gun tube a posit ion 42inches out from the center of the gun trunnion. Slip the gun shieldadapter (f ig. 38) over the gun so that the adapter arm s contact thegun shield. The long f langes of the arm s are below the gun andparallel to its center l ine, and the trunnions on the adapter collar arehorizontal. If the end of the adapter collar is exactly at the 42-inc h

mark on the gun, shim the collar s o that i t is equally spaced aroundthe gun tube, and the, adapter trunnions are exaCtly horizontal. Weldthe adapter to the gun shield, using 5132 Ch wM ang AR CO weld-ing rod or equivalent. I t is important to place as mu ch we ld aspractical at the top wh ere the.reinforcements on the arm s abut thegun shield. The gun shield ma y he of such a type that the arms of theadapter must be shortened to allow the end of the adapter collar tocom e to the 42-inch mark on the gun tube. In this case, the arm smust be burned off to f it the gun shield so that the 42-inch posit ionof the collar is maintained and the adapter trunnions are horizontal.Shim the collar and weld the adapter to the gun shield as describedabove.

e. Instal lat ion of Quadrant Assembly.(1) Disconnect the holder l ink from the periscope holder andfrom the adjusting rod of gun elevation mechanism (f ig. 39).(2) Rem ove the holder connector from the quadrant (f ig. 14)and assem ble it to the periscope holder.(3) Rr+n ove the adjusting rod f i tt ing from the quadrant (f ig. 14)and asse mble it to the adjusting rod.(4) Mak e certain tank is level and gun is at zero elevation andzero traverse.(5) Conne ct the quadrant to the adjusting rod and holder con-nector by me ans of the l inkage (connections should b e such as toallow leeway for adjustments described below).(6) Tack the quadrant on to the ceil ing of the turret so thatthere is no binding on l inkage an d indicator is at about ze ro on rangeplate.(7) Weld quadrant in this posit ion (f ig. 40).(8) Bore sight on a distant object at least 1,000 yards away, sightthrough periscope on sam e object, adjust nuts on holder connector(fig. 14) until bubb le is l,evel, and c lam p the. elevation scale platein this position.

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TM 9.39621INSTALLATION OF LAUNCHER

Figure 39-Periscope Holder. Connector, and Adiusfing Rod

Figure 4O-Q eadra nf Assem bly in Posit ion in Turret39


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TM 9.39621


Figure 4l-Firing Mech anism Box in Posit ion in Turret41

8 ,,7 I,,I


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TM 9-39621

7.2.INCH MULTIPLE ROC KET LAUN CHER Ml7

Figure 44-Pushing Trunnion Support Into PosMo n

Figure 4CPinr of Latch Plate Clamped to Trunnion Suppor i44


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TM 9.39621


Figure 46-Equil ibrator Spring Assem bly Engagin g Uppe rJett isoning Latch

TH ERUT

Figure 47-Strewing Elevating Strut Into Block on Launc her45


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TM 9.39621


Figure 49-Conne cfionr on Top of Per iscope Block(b) Line DD D is con nec ted to the mid dle transmitter. Theubing should be bent so that it exactly parallels the l ine BBB ,n&ing up the side of the turret, immed iately forward of BBB , andthen is connected to the disconnec t f itt ing mark ed DDD .(c) Line AA A is con nec ted to the right-ha nd transmitter, bu tshould not be formed unti l l ine CC C is formed and connected. LineCC C is then conn ected and the tubing run along the side of thebas ket to a position forward of the line DD D, at whi ch po int it isthen bent upwa rd and run alongside of DD D unti l i t reache s thejett ison guides where it is connec ted to the f it t ing mark ed CC C.Wh en this line is con nect ed, line AA A is ben t so that it will followimm edia tely besi de line CC C and connec t to fitting ma rke d AA A.(12) Plug one end of f ir ing cable into proper recepta& on jett i-son guide and the other end into receptacle on left side of f ir ing

@ mechan ism box ( fig. 52).(13) Plug one end of indicator l ight c able into receptacle onjett ison guide and other en d mto receptacle on right side of f iringmechan ism box ( fig. 52).(14) Plug the 24-v& battery lea d into the receptacle on r ight


52/63

TM 9.39621



53/63


54/63

TM 9.396217.2. INCi l MULTIPLER O C K R T A U N C H E R Ml7

.


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TM 9.39621

INSTALLATION OF LAUNCHE R

Transmiffers and Periscope Block51


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TM 9.39621.22

INSTALLATION OF LAUNCH ERj. Adjustm ent of Links.(1) Afta all hydraulic sy stems have been f i lled and checked ,safety-wire all latches in the latched posit ion.(2) Con nect the l ink to the receiver on each trunnion support. I tshould he possible to co nnect lever ar m to screw f itt ing withoutforcing. I f necessary , adjust by me ans of scre w f itt ing and adjustingscrews.(3) Connect and adjust the l ink between the upper and lowerjett isoning latches so that i t has a free play of one-eig hth inch.k. Af ter the l inks have been adjusted and connected, remove thesafety wire from the latches, and bolt the arm or plate cov ers to theelevating strut and trunnion supports.

22 . INSTALLATION OF LAUNCHE R WITHOUT THE AS-SEMBLING JIG.a. InstalIat ion of Qua drant Assem bly. Proce ed as in pare-graph 21 e.b. Installat ion of Firing Mech anism . Proce ed as in para-graph 21 d.e. Insta l la t ion of Transm it ters. Proceed as in paragraph 2 1 e.d. Weld ing o f Tan k At tachments.(1) Set the tank level, and the 75-m m g un at zero elevat ion a ndzero traverse.(2) Use the center l ine of the gun at the point where it crossesthe turret surface as a poiht of origin and determine the go-de gree,lSO-degree,and 270degree points on the top of the machined surfaceof the turret. Dra w a l ine over the turret betw een the go-deg ree and27Odeg ree points, and a l ine between the zero-degree and 180-

degree points.(3) Use the top of the machined surface of the turret as a base,erect a perpendicular,, and lay off the d istances of 5% , inches and 23inches f rom the base. Through the points thus matked, draw l ines onthe turret su rface parall to the top of the mac hined surface. Thel ine 5% inches distant f rom machined surface corresponds to hori-zontal center l ine of trunnion pin bracket; the l ine 23 inches distantf rom the top of the m achined surface corresponds to horizontal centerl ine of the trunnion latch plate (f ig. 53).(4) Determine , the mid-point on the launcher betw een the ele-vating trunnions. Mark this point and carefully extend it to the frontand rear Of lameher.

53


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TM 9.396227 .2. INCH MULTIPLE ROCKET LAUNCH ER Ml7

(5) Ma ke certain gun is at zero elevation and zero traverse. Thenweld the gun shie ld adapter to the gun shie ld (par. 21 b 8)).(6) Lif t launcher over the turret an d screw the elevating strutinto b lock on launcher unt i l about 1 inch of threaded surface is ex-pose d (f ig. 47). Latch the elevating strut to the trunnions of the gunshield adapte r (f ig. 48). Do n ot connect l ink to the receiver on thestrut.(7) Assem ble the left and right trunnion supports to the ele-vat ing t runnions on the launcher an d secure with the nuts.(8) Steady the launcher over the turret in accordance with thefollowing condit ions ( use blocking if necessary):(a) Laun cher must be level and trunnion supports vert ical.(b) Cente r line of gun, elevating strut, mid-point l ine on launcher,and 180degree mark on rear of turret must a l ine.(c) Horizorital center l ine of bearing for trunnion pin bracketmus t aline with the 5 %-inch l ine.(d) Horizontal center l ine of lower jett isoning latch pivot ontrunnion support mus t aline with 2binch l ine.(e) Distance from center line of trunnion support. to a l ineerected at 90degree a nd 270degre e points on turret end paral le l tofront s ide of support must be 25 inches.(9) Fit and cut templates from trunnion suppo rts to turret sur-face at points of trunnion pin brackets and latch plates.(10) Cut and grind brackets and plates to suit template pat-terns and turret surface.(11) Weld the brackets and plates to the turret . Use modif ied18-8 welding rods. Temperature of turret and parts to be weldedshould not he less than 70F.(12) Fi t a template to the turret on the 90 degrees-270 degreesline; cut template s o that i t is 4% inches abov e turret top. This l ine

determ ines the vert ical posit ion of the roller bracket on the turret.Dro p a perpendicular from the roller rai l of the launcher to the topof the template. This intersection c orrespo nds to the center of thedepress ion on the roller and determine s the lateral posit ion of th eroller bracket o n the turret (f ig. 54).(13) Cut and grind brackets to suit template pattern and turretsurface.(14) We ld the brackets to the turret.e. Mount ing the J.aunc.ber.(1) Screw the nuts onto the t runnion pin brackets, snd onto thefixed pins of latch plates.(2~) Swin g the hinged pins of latch plates forward against rear

54


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INSTALLATION OF LAUNCHERTM 9.396

22

Figure 53-Dim ensions for Weldin g Jett ison Roller Bracketssides of trunnion supports and engage with lower jett isoning latches.Clam p the hin ged and f ixed pins in this posit ion, using C clamp> .

c3) Elevate the gun and launcher unti l the crossh eads at rear ofequil itirator springs can be inserted into clevis openin gs, and en gagethe upper jett isoning latches., .,(4) Drive in the pins to secure the nuts on elevating trunnions, onfixed pins of latch plates, and on trunnion pin brackets.(5) Re n% ov e he C clam ps.(6) Set the launcher at zero elevation.(7) Conn ect the l ink o n the elevating strut to the receiver arm.If holes in screw fitt ing aed receiver arm do not aline, adjust b y mea nsof screw fitt ing and adjusting nut (f ig. 12).f . Installat ion of Elect~ie and Hydraul ic Lines. Pro ceedasin paragraph 21 g:g. Fil ling of Hydraul ic S ystem s or Jett isoning. Proceed asin paragraph 21 b.b. Fi l ling of Hydraul ic System s for Ope rat ion of Doors.Proceed as in paragraph 2 1 i .i . Adjustm ent of Links. Proceed as in paragraph 21 j .

55


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TM 9.39622

7 .2. INCH MULTIPLE ROCKET LAUNCHE R Ml7

Figure 54-Hor;zontal Cenfer L ines of Trunnion Pin Bracketsand Latch Pla+es56


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TM 9.39623-24

Section VIIREFERENCES

23. PUBLICATIONS INDEXES.The following publiCations indexes should be consulted frequently

for latest chang es or revisions of references given in this section andfor ne w publications relat ing to materiel covered in this man ual:~

a. Introduction to Ordn ance Catalog (explainingSNL system) ASF Cat .ORD 1 IOC

b. Index (index to SNLs) ASF Cat.ORD 2 .OPSIe. Index to Ord!+n ce Publications (l ist ing FM s,

TM s, TCs, and TBs of interest to ordnanc epersonnel , OPSR, FSMWOs, BSD, S ofSR s, OSSCs, and OFSBs, and includingalphabetical l ist ing of ordnanc e major itemswith publications pertaining thereto) ,..,,,.. O FS B l-l

d. List of Publications for Training (l ist ing M Rs,MTP s, FMs, TMs, TRs, TBs , MU?Os,SB s , WDLOs, and FTs) .,, FM 2 1-6

e. List of Training Films, Film Strips, and FilmBulletins (listing TFs, FSs, and FBs byseria l number and subject) FM 2 -7

f. Military Trainin g Aids (listing graph ic train-ing aids, models, devices, and displays) FM 2 1-8

24 . STANDARD NOM ENCLATU RE L ISTS.a. Cleanin& preserving, and lubricating mate-

rials; recoil f luids, special oils, and miscel-laneous related items ,, . OR D 5SNL K- l

b. Rockets, al l types and comp onents ,. .. .. . .. O RD 11SNL S-9c. Soldering, brazing and welding material, gases,

and related items .: SNL K-257


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TM 9.396257 .2. INCH MULTIPLE ROCKE T LAUNCH ER Ml7

25 . EXPLANATOR Y PUBLICATIONS.a.b.

c.d.I?.f.g.Il .i.

j.

Ammunit ion, general TM 9-1900Cleaning, preserving, lubricating, and welding

materials .and similar i tems issued by theOrdnance Department . : TM g-850

Decontaminat ion .............................................. TM 3-220De fens e agains t chem ical a ttack .................... F M 2 l-40Medium tank, M4A 2 ......................................... TM 9-731BMedium tank M4A3 ........................................ TM 9-759Medium tank M4A4 ........................................ TM 9-754Med ium tanks M4 and M4Al . ., . : , . ,. ,. , .. ., . .. .. TM g-7,3114Qualif ications in arms and ammunit ion train-

ing allow anc es .,.,.,.,...,....,............,................ AR 77 5-10Rang e, regulat ions for f iring am&nit ion for

training and target practice AR 750-10


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A .aq.Aundtiansutholizedounds............ 24dassi l icat ion and compon enta. . .. 23firing tabl es .................. 28

EElectric ines,butdlation ........ 43Elev etig strut ................. 10Equ ipm ent for jett isoning ........ 15Exac tor control receiv ers ......... 18

FFir ing mec hanismdesc ription and functionin g ..... 14idlatio n .................. 40lking mc ke tr .................. 20Firing tables

cbe mic sl rocke t TZl .......... 29pmviaiond for HE rocket T37, 28Fuzesdes crip tion .................... 24ihspec+ion prior to use ......... 25

GGu n shield adap ter ... ., ......... 7

HHyd raulic t ine*, instfdtation ...... 43Hydraul ic system s, t i ll ing for:jettis onin g ................... 49

opera tionofdoo n.. ............ 52J

Jettisonin g eQu ipm ent ........... 15

LLauncher,&et, mult iple,7.2-b&Ml?cara and maintenan ce . .. .. . .. . 29chara cteristics and data ........ 1dew iptio n .................. 3

TM 9.396, lNDEX

rowLigbt witch ................... 27Lines (SW Electric l iner end Hy-draul ic l ines)Links, adjustment ....... ....... 53Loading ............. ... .. .. 19

MMaintenance ........... ....... 29

PPerisc+e bl.xk .................. 18

QQuadrantdescript ion and funct ioning .... 14instal lat ion of assembly ........ 38

RRail assem bly, launcher .......... $Range datachemical rocket T21 ........... 29HE rocket T37 ............... 28Rocket , chemical , T21

assembly ..................... 26precaut ions .................. 29range data ............. ..: .. .1,2 9return to storage .............. 27

Rocket, ,HE, T37assembly .................... 25data ..................... ..1. 2 8

sSight ing ............ .......... 20Switch, indicator l i@t .. ........ 29

TTail latch inatdat ion block ........ 31Tank at tachmentadescript ion ................... 6

welding ................. ..32.5 3

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TM 9-296 '7,2in Multiple Rocket Launcher M17' (1945)

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