Service BulletinVolvo Truck CorporationCuritiba, Brazil Trucks

Date Group No. Release Page

10.2010 431 168 07 1( 7 )

Input shaft, overhaul

FM9/FM12/FH12/FH16/FH/FM

VT2412B (GSS-AGS)

AT2412C, AT2512C, AT2812C,ATO2512C, ATO3112C

AT2412D, AT2612D, AT2812D, ATO2612D, ATO3112D

Input shaft, overhaul

T4028611

ContentsDisassembly, page 2

Inspection, page 4

Assembly, page 4

88998341ENG45501 English

Printed in Sweden

Volvo Truck Corporation Date Group No. Release PageService Bulletin 10.2010 431 168 07 2( 7 )

Service Procedures

43197-5Input shaft, overhaul

Unit removedAs the same illustrations are reused for different variants, some details may differ for thevariant you are working on. The essential information in the illustrations is, however,always correct.

Special tools: 9990193, 9992619, 9992671,9996222, 9996366, 9996413, 9996498,9996499, 9996500, 9996616 , 9996904,9998022, 88800004

Disassembly1

T4028612

1Remove locking ring

Volvo Truck Corporation Date Group No. Release PageService Bulletin 10.2010 431 168 07 3( 7 )

2

T4028613

2Draw off the roller bearing.

A 9998022 (AT2412C, ATO2512C)

B 88800004 (AT2512C, AT2812C, ATO3112C)

C 9996499

D 9996413

E 9992619

F 9996498

G 9996500

H 9992671

I 9996222

9992619, 9992671, 9996222, 9996413, 9996498,9996499 , 9996500, 9998022, 88800004

3

T4028610

3Remove the engaging sleeve, interlocking pins andsprings.

Note: The springs and interlocking pins are loose.

Volvo Truck Corporation Date Group No. Release PageService Bulletin 10.2010 431 168 07 4( 7 )

4

T4028614

4Remove the gear, the engaging ring, the synchronizingcone and the two needle bearings.

Inspection5

T1008812

5Clean all components.Inspect components for damage or wear. Replacedamaged or worn parts.

6

T4016277

6Put all the components on a table, so that they partlyoverlap the edge of the table.Check that the synchronizing cone is flush with theengaging ring and measure from the engaging ringlower edge to the synchronizing cones upper edge.Measure at several points.

Synchronization Newcomponents

(mm)

Min.dimension

(mm)

Low split / High split 19,50,3 18,4

Assembly7

7Lubricate the needle bearings, synchronizing cone andgear with gearbox oil. Replace the lock pin springs withnew items. Lubricate the springs.

Volvo Truck Corporation Date Group No. Release PageService Bulletin 10.2010 431 168 07 5( 7 )

8

T4028614

8Place the shaft on a table.Fit the synchronizing cone, the engaging ring, the gearand needle bearings.

9

T4028617

9Press on the roller bearing. Use socket mandrel (A)9996904 and mandrel (B) 9990193.

Note: Use mandrel (C) 9996616 as a base to avoiddamaging the input shaft.

Note: Use a thickest possible retaining ring. Maximumpermitted play 0.05 mm.

9990193, 9996616, 99969040.05 mm

Volvo Truck Corporation Date Group No. Release PageService Bulletin 10.2010 431 168 07 6( 7 )

10

T4028612

10Fit the retaining ring.

1111Turn the shaft over and put it in a vice.

Note: Use soft jaws in the vice.

12

T4028615

12Fit the engaging sleeve with the chamfered edge facingupwards.

13

T4028616

13Pull down the engaging sleeve into clutch position. Fitthe interlocking pins and springs.

Note: For further information about detent pins andsprings, consult Function Group 4315, Information typeDescription Detent pins and springs, split and inputshaft.

Volvo Truck Corporation Date Group No. Release PageService Bulletin 10.2010 431 168 07 7( 7 )

14

T4028618

14Fit the socket mandrel (A) 9996366 and pull theengaging sleeve up into the neutral position.

Note: When installing the complete input shaft on themainshaft, hold the engaging sleeve to prevent it fromcoming loose.

9996366