INTERACTIVE SCHEMATIC
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Bookmarks X
EC-C3EC-C2 E-C60
EC-C1
E-C61
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Cooling System793F Off-Highway Truck
SSP1-UP
©2009 Caterpillar, All Rights Reserved Printed in U.S.A.
KENR9593September 2009
2009 Caterpillar, All Rights Reserved©
COMPONENT TABLE
Description PartNumber
MachineLocation
SchematicLocation
8-B11884-162pG rosserpmoC riA7-B23693-762retaeH - sA lioC7-D34684-542liO enignE - pG relooC8-F41469-633ekarB ,relooC liO - sA eroC7-F51469-633ekarB ,relooC liO - sA eroC
7-B81950-382renoitidnoC riA - pG seniL
6-D010838-533pG rotaidaR8-C118377-723pG regrahcobruT8-C218377-723pG regrahcobruT7-C318377-723pG regrahcobruT7-C418377-723pG regrahcobruT7-D518327-V6ffotuhS - evlaV
4-B711884-162pG rosserpmoC riA3-B813693-762retaeH - sA lioC3-D914684-542liO enignE - pG relooC4-F021469-633ekarB ,relooC liO - sA eroC3-F121469-633ekarB ,relooC liO - sA eroC
3-B521950-382renoitidnoC riA - pG seniL2-B621276-052yrailixuA ,retaW - pG pmuP
2-D820838-533pG rotaidaR4-C928377-723pG regrahcobruT4-C038377-723pG regrahcobruT3-C138377-723pG regrahcobruT3-C238377-723pG regrahcobruT3-D338327-V6ffotuhS - evlaV
Low Altitude, Standard Retarding
Low Altitude, Additional Retarding
7-FF
E
FFF
E
©2009 Caterpillar, All Rights Reserved
FLUID POWER SYMBOLS
ONE POSITION TWO POSITION THREE POSITION
VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL
LINES CROSSING LINES JOINING
TWO-WAY THREE-WAY FOUR-WAY
SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION(FIXED)
2-SECTION PUMP
MAIN AUX.
SPRING(ADJUSTABLE)
VARIABILITY LINE RESTRICTION(VARIABLE)
LINE RESTRICTIONVARIABLE and PRESSURE
COMPENSATED
PRESSURECOMPENSATION
PUMP: VARIABLE andPRESSURE COMPENSATED
ENERGY TRIANGLESHYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONERPUMP or MOTOR
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLSRELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED COMPLETE INTERNALSUPPLY PRESSURE
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOID or MANUAL
SOLENOID and PILOT
SOLENOID and PILOT or MANUAL
COMBINATION CONTROLS
SOLENOID SERVO THERMAL DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASICSYMBOL
SPRINGLOADED
CHECK VALVES
TWOPOSITION
INFINITEPOSITIONING
FLOW IN ONEDIRECTION
FLOW ALLOWED INEITHER DIRECTION
THREEPOSITION
CROSSFLOW
PARALLELFLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P TSHIFTED POSITION INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOTCONTROLLED
©2009 Caterpillar, All Rights Reserved
ELECTRICAL SYMBOLSHydraulic Symbols (Electrical)
325-AG135 PK-14
Circuit IdentificationNumber
Wire Color Wire Gauge
Harness identification codeThis example indicateswire 135 in harness "AG".
325-PK-14
Wire Gauge
Wire Color
Circuit Number Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example Hydraulic Schematic Example
325-PK
Wire ColorCircuit Number Identification
B A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer(Fluid)
Transducer(Gas / Air)
G
Generator
Electrical WirePressure Switch
MElectric Motor
Pressure Switch (Adjustable)
Temperature Switch
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
Electrical Symbols (Electrical)
T
COOLANT CIRCUIT COLOR DESCRIPTIONSJACKET WATER PUMP AND CIRCUITS
SUPPLY LINEAUXILIARY WATER PUMP AND CIRCUITS
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)YY
(52) VALVE GP - CONTROL 138-1234
Callout Number(Machine Location from
Component LocationsTable)
ComponentName
Part Number
HYDRAULIC OIL DRAIN LINES
SERVICE LINE
THIS SCHEMATIC IS FOR THE 793F OFF-HIGHWAY TRUCKCOOLING SYSTEM MEDIA NUMBER: KENR9593 PART NUMBER: 301-6851, CHANGE: 01, VERSION: -Components are shown installed on a fully operable machine.
Refer to the appropriate Service Manual for Troubleshooting, Specifications.
12345678
A
B
C
D
E
F
12345678
A
B
C
D
E
F
JW FLOW 1729 LPMJW SHUNT LINE FLOW 103 LPM
ALL FLOWS LISTED AT RATED ENGINE SPEEDOF 1750 RPM WITH THERMOSTAT FULLY OPEN
DRAI
N LI
NE
LOW ALTITUDESTANDARD RETARDING
NOTE: AIR COMPRESSOR IS PRESENT ONLY FOR STARTING AR. - AIR 278-8470 OR 278-8471
VENT LINE
VENT
LIN
E
SERVICE CENTER
NOTE: SERVICE CENTER IS PRESENT ONLY FOR SERVICE GP 278-8445 OR 279-0717.
DRAIN LINE
JW S
HUNT
LIN
E
C175-16ENGINE BLOCK
DRAIN LINE
DRAIN LINE
VENT LINE
DRAIN LINE
VENT LINE
VENT LINE
VENT LINE
M
M
C175-16ENGINE BLOCK
VENT LINE
JW FLOW 1665 LPMJW SHUNT LINE FLOW 111 LPM
AUX FLOW 1521 LPMAUX SHUNT LINE FLOW 112 LPM
ALL FLOWS LISTED AT RATED ENGINE SPEEDOF 1750 RPM WITH THERMOSTAT FULLY OPEN
LOW ALTITUDEADDITIONAL RETARDING
SERVICE CENTERNOTE: SERVICE CENTER IS PRESENT ONLY FOR SERVICE GP 272-5377 OR 293-7875.
JW S
HUNT
LIN
E
DRAI
N LI
NE
VENT LINE
VENT
LIN
E
DRAIN LINE
DRAIN LINE
DRAIN LINE
VENT LINE
DRAIN LINE
AUX
SHUN
T LI
NE
VENT
LIN
E
VENT
LIN
E
VENT LINE
VENT LINE
VENT LINE
VENT
LIN
E
NOTE: AIR COMPRESSOR IS PRESENT ONLY FOR STARTING AR. - AIR 278-8470 OR 278-8471
(4) CORE ASOIL COOLERBRAKE336-9641
(5) CORE ASOIL COOLERBRAKE336-9641
(6) CORE ASOIL COOLERSTEERING199-6683
(7) CORE ASOIL COOLERTRANSMISSION OIL336-9642
(3) COOLER GPENGINE OIL245-4864
(11) TURBOCHARGER327-7738
(13) TURBOCHARGER327-7738
(14) TURBOCHARGER327-7738
(1) AIR COMPRESSOR GP261-4881
(8) LINES GP AIR CONDITIONER283-0591
(2) COIL ASHEATER267-3963
(9) PUMP GPWATERJACKET WATER313-2758
(10) RADIATOR GP335-8380
(16) VALVE GPTHERMOSTATICEL. TEMP. CONTROL264-5356
(22) CORE ASOIL COOLERFRONT BRAKE290-2729
(20) CORE ASOIL COOLERBRAKE336-9641
(21) CORE ASOIL COOLERBRAKE336-9641
(23) CORE ASOIL COOLERSTEERING199-6683
(24) CORE ASOIL COOLERTRANSMISSION OIL336-9642
(19) COOLER GPENGINE OIL245-4864
(17) AIR COMPRESSOR GP261-4881
(25) LINES GP AIR CONDITIONER283-0591
(18) COIL ASHEATER267-3963
(27) PUMP GPWATERJACKET WATER313-2758
(28) RADIATOR GP335-8380
(34) VALVE GPTHERMOSTATICEL. TEMP. CONTROL286-4571
(26) PUMP GPWATERAUXILIARY250-6721
(12) TURBOCHARGER327-7738
(29) TURBOCHARGER327-7738
(31) TURBOCHARGER327-7738
(32) TURBOCHARGER327-7738
(30) TURBOCHARGER327-7738
(33) VALVESHUTOFF6V-7238
(15) VALVESHUTOFF6V-7238
2009 Caterpillar, All Rights Reserved©
TOP VIEW
32
31
30
29
28
24
23
22
21
20
14
13
12
11
10
7
6
5
4
2009 Caterpillar, All Rights Reserved©
FRONT OF ENGINE
332726 17 1591
2009 Caterpillar, All Rights Reserved©
LEFT SIDE ENGINE COMPARTMENT
34 1916 3
2009 Caterpillar, All Rights Reserved©
RIGHT REAR OF CAB
2518 82