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PLANO TRANSMISION.pdf
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RENR8879-04 April2010
B
C
28
31
BASICCOMPONENTSYMBOLS MAINAUX.
PUMPorMOTOR
E
SPRING (ADJUSTABLE)
VARIABILITY
J
B F
49
G
O NE P OS TI O I N
C
A
Theservicecenterislocatedontherightsideofthemachinebelo erislocatedontherightsideofthemachinebelowthecab.The Following componentsare locatedin theservice center: -Casedrainfilter(31) -Hydraulicoilfluidsampli coilfluidsamplingvalve(SOS) -H ydraulicsystemskidneyloop filter(28) -B rakesystemaccumulators(49)
-P ilotaccumulator(24) -Pilotsupplypressuretap(GG)
6
VALVE PORTS
T HR EE P OS T I O I N
TWO-WAY
TheFollowingcomponentsarenotreferencedontheHydraulicSystemSchematic: ic:
PRESSURE
INFIN I T EP O S I TOI N
BASIC SYMBOL
SPRING LOADED
950H: N1A1-UP M1G1-UP K5K1-UP J5J1-UP JAD1-UP
-Powertrainoilfluidsamplingvalve(A) -Powertrainoilfilter(B) -Ecologydrainforthehydraulictank(C)
FLOW
TEMPERATURE
962H: N4A1-UP M3G1-UP K6K1-UP J6J1-UP MAL1-UP
IT62H: M5G1-UP
V ENT E D
UNIDIREC TIONAL
BIDIR ECTIO NAL
RETURNABOVE FLUIDLEVEL
P RE S S U R ZI E D
RETURNBELOW FLUIDLEVEL
COMBINATIONCONTROLS
SOLENOID
SOLENOID orMANUAL
SOLENOIDand PILOTorMANUAL
SOLENOID andPILOT
SERV O
A
PUSH-PULL LEVER
MANUALSHUTOFF
B
EE
G
KK
GE NER AL MANUAL
PUSH BUTTON
C
L E
D
C
K
E H
J
F
Description
Part Number
Schematic Location
HMUSTEERINGCIRCUIT 1
Hand M etering Unit
2
C o nnector -O -Orifice
3
C ylinder Gp -S -Steer
163-0324
B-1
4
V a l e v Gp - N eu rta il e zr
146- 7 571
230-4176
B3 - ,B ,B 4-
5
Valve Gp - S teer
6
Valve Gp -N -Neutralizer
122-2340
142-4000
A-4 B-3 ,B ,B-4
Valve Gp - S teer
8J -1553 124-8635
D-3 D-1
8
Cylinder Gp -S -Steer
163-0324
E-1
9
Valve Gp - Check
111-7775
D-3
10
Valve Gp - P ilot
147-1790
D-4
11
Valve Gp - Shuttle
8J 6 - 875
C-3
154-2883
E-2
12
S creen Gp MAINSCHEMATIC
13
P ump G p -S -Steering
14
15
241-9299
A-6
P u mp Gp -I -Implement
254-4108
A-7
Cylinder - Tilt
242-4220
F-8
C yl ni d e r- T li t( t( Mi dL fi )t
24 70 - 4 97
C yl ni d e r- T li t( t( H i gh L fi )t
24 57 - 4 91
F8 -
F8 -
C yl ni d e r- T li t( t( Lo g ge r)
24 57 - 4 87
F8 -
20
Cylinder -L -Lift L ( H)
242-4272
F-7
21
Cylinder -L -Lift R ( H)
242-4271
F-7
22
Valve -C -Choke Check
276-9072
D-9
23
V al v e Gp Gp - Ma nu a lLo we r ni g
24
Accumulator -P -P liot Oil
25
P ump Gp - Fan
254-5146
B-8
26
Motor Gp - Fan
246-6152
D-6
V a l e v Gp - Coo elr Bypas s
244- 1 426
B- 9
Filter Gp -R -Return Oil
244-1031
B-9
M an fi ol d Gp - F an & Br ak e Ch ar g e
2 42 -1 30 7
C -8
Filter Gp -C -Case Drain
249-2334
A-8
3 2
V a lve Gp - Brea e k rR eli e f
220- 0 814
A- 8
33
Tank Gp -H -Hydraulic Oil
237-2742
A-8
27 28 30 31
34
V avl e Gp - S e c o n da ry S t e r Di ve rt er
35
P ump Gp - Sec o nda yr Steer ValveGp-Control (2FunctionStandard )
36
41
11 21 - 8 17 245-2975
1 41 - 2 5 97
A- 6 D9 D9 -
ValveGp-Control (3Function)
26 14 - 1 72
D9 -
ValveGp-Control (2FunctionW/RC)
26 13 - 6 83
D9 -
ValveGp-Control(SnowRemoval) (3FunctionW/RC)
27 48 - 0 55
D9 -
Val e v Gp - Co n tro l& Rel eif
263- 5 83 2
C7 -
M o tor Gp - Revers nig Fa n
228- 8 527
C6 -
54
Val e v Gp - Qui c k Cou p le r
55
C yl ni de rG pp- Qu Qu ci kC ou pl er
23 70 - 94 6
C -9
56
Valve G p -Manual
112-1817
C-9
25
P ump Gp - Fan
254-5146
C9 -
F-2
30
M an fi ol d Gp - F an & Br ak e Ch ar ge
2 42 -1 30 7
F -2
BRAKESYSTEM
45
Control Gp -F -Foot Brake
193-1448
F-3
46
S wi ct hA hA ss- F o tB tB a r k e Li Li m it
10 56 - 1 17
F3 -
47
S e nsor Gp -F -Foot Brake
48
Valve Gp -F -Foot Brake
214-4863 21 38 - 7 73 12 98 - 0 90
F1 -
V a lve Gp - Parki n g Brake
106- 1 77 4
F2 -
52
S wi tc h As - P ar k i ng B a r ke P e r ss ur e
1 74 -4 31 2
F -1
53
S witc hA ss- Bra e k Pr Pres u sre
175- 3 244
F3 -
-Tiltanti-driftvalv ftvalve(A) -Signalreliefvalve(B) ve(B) -Signalduplicationvalv ionvalve(C) -Returntotankport(D) -Supplyportfrompump(E) -Signallinetopump(F) -Tankline(G) -Screen(H) -Tiltbackpilotsolenoidvalve(J) -Tiltbackpilot(K) -Tiltcylinderrodendlinerelief(L) -Ridecontrolbalancesolenoidvalve(M) ve(M) -Rod endsolenoidvalve(ridecont dvalve(ridecontrol)(N) rol)(N)
DD
I m pl e me n t Pu m p Cha gre Pr Pres u sre Im p el m e nt Pu Pu m p Lo Lo ad Se Se ns eP eP e r s ur e
CC
48
Schematic Location
E -5
HH
Fan Pump Load Sense Pressure
B-8
KK
Com m an d C o nt ro l Rgi ht S t ee r Plio t Pr es s ur e
Com m an d C on tr ol S t ee ri n g Su p p l y Pe r ss u e r
ElectricalWire
TemperatureSwitch ch
Temperature Symbol
Flow Symbol
Level Symbol
Wire Number Identification Codes Electrical Schematic Example XX
YY
Hydraulic Schematic Example CurrentStandard
CurrentStandard Harnessident ificationcode Thisexampleindica tes tes wire135inharness"AG".
Wire CircuitNumber Identification
15
WireColor
325-AG135PK-14
Thefollowi owingcomponentsarelocatedund edunderthefrontoftheca hecab.
325-PK
-Handmeteringunit(1) -Footservicebrakevalve(48) ve(48) -Steerpumploadsensetestport(FF) -Frontsercivebraketestport(QQ) -Rearservicebraketestport(RR) t(RR)
Thisdrawingshowsarightsideviewofthewheelloader.The followingcomponentscanbe seen inthisview: -Implementpumppressuretap(CC) -ImplementpumploadSensepressuretap(DD)
IMPLEMENT CONTROL VALVE
CircuitIdentif ication Number
W ri e Co ol r
W ri e Ga ug e
PreviousStandard Wire
WireColor
325-PK-14
HMU & SERVICE BRAKES
VIEW A - A
B CircuitNumber Identification
A
WireGauge (EXAMPLE VALVE)
TILT CYLINDER LINES GROUP 1
26
31
43
49
B7 -
Pilot Supply P ressure
C om m a nd C on rt ol L ef t St ee r Pi o l t Pr es su e r
ElectricMotor
45 46
20
47 48
21
15
15 1 20
21
27
25
FANAND BRAKE HYDRAULICSYSTEM AA Thefanandbrakepump(25)islocatedon thefrontgeartrainoftheengine,ontherightsideofthe machine.The fanandbrakepumpprovidesoilflowfortheelectronicdem ronicdemandfansystemandthe brakehydraulicsystem icsystem. Theoutletpressuretap(AA)islocatedonthefanand brakepump.
45 46
2643
47 48
E-9 E9 -
Steer Pump Pressure Se t er Pu Pu m p Lo Lo a dSe n se P er s ur e
Com m an d C on tr ol S t ee ri n g Ne ut ra l P li ot P r es s
Generator
T
Pressure Symbol
RIGHT SIDE VIEW
1
QQ
B-8
FF
LL
PressureSwitch (Adjustable)
RR FF
28
EE
NN
Transducer (Gas /Air)
PressureS witch
DD
27
GG
MM
M
G Transducer (Fluid)
ElectricalSymbols (Electrical)
3233
C C
FLOWALLOWEDIN EITHER DIRECTION
HydraulicSymbols (Electrical)
SERVICE CENTER
33 32
Description
TWO POSITION
CROSS FLOW
PARALLEL FLOW
F2 -
Tap Locations Pressure, Sampling, and Sensor Fan Pump Discharge Pressure
FLOWINONE DIRECTION
Electrical Symbols Table
15
F-3
A cc um u la t or - Se vri ce Br Br a ke A ct ua ot rA ss- P ark ni gB gB a r k e
5 1
AA
THREE POSITION
INFINITE POSITIONING
PrintedinU.S.A.
YY
F-3
49 50
Tap Number
BIDIRECTIONAL
F -6
42 43
215-3687
UNIDIRECTIONAL
BIDIRECTIONAL
DOUBLE ACTING
INTERNAL PASSAGEWAYS
VARIABLE DISPLACEMENT NON-COMPENSATED
UNIDIRECTIONAL
B-6
275- 8 544
26 13 - 6 82
180- 8 5 8 5
XX
-Transmission reverseclutch (A) -Transmission forwardclutch(B ) -Transmissionfourthspeedclutch(C) thspeedclutch(C) -Transmissionthirdspeedclutch(D) dspeedclutch(D) -Transmissionsecondspeedclutch(E) -Transmissionfirstspeedclutch(F) -Torqueconverterinletpre terinletpressure(G) -Transmission lubricationpressure(H ) -Transmissionpumpoutletpressu letpressure(J) -Torqueconverteroutle teroutletpressure(K) -Steeringcylinderrodendgreasefitt nderrodendgreasefittings(L) ings(L) -Rearaxleoscillationbeari ionbearinggreasefitt nggreasefittings(M) ings(M)
-Implementcontrolvalvesupplypressur ypressuretap(GG) etap(GG)
F-5
26 14 - 1 71
2 45 -2 97 3
FIXED DISPLACEMENT
TheFollowingcomponentsarenotreferencedontheHydraul encedontheHydraulicSystemSchematic:
TheFollowingcomponentsarenotreferencedontheHydraul encedontheHydraulicSystemSchematic:
E -9
ValveGp-Control (2FunctionW/RC)
A cc um ul at or - R di e Co nt o r l (R C)
Thisphotoshowsa leftrearviewoftheimplem ewoftheimplementcontrolvalve(36).The .The followingcomponentscan scan beseeninthisview:
B-2
COMMAND CONTROL STEERING 7
SINGLE ACTING
HYDRAULICMOTORS
VARIABLE DISPLACEMENT NON-COMPENSATED
INTERNAL SUPPLY PRESSURE
COMPLETE
HYDRAULICANDPNEUMATICCYLINDERS
LINESJOINING
-Steeringpumpoutletpressure(EE) e(EE) -Brakesystemaccumulatorpres atorpressure(PP)
ComponentLocations Item Number
SPR ING
©2010Caterpillar AllRightsReserved
Thefollowingremotepressuretapsarelocatedinsid etapsarelocatedinsidethepanelonthe frontsideofthe sideofthe servicecenter:
G
LINESCROSSING
HYDRAULICPUMPS
K
H J
SIMPLIFIED
CROSSINGANDJOININGLINES
G AS CH AR GE D
FIXED DISPLACEMENT
CC
COMMAND CONTROL STEERING
INTERNALRETURN
S PR N I GL OA DE D
L
RIGHT SIDE MACHINE VIEW
PEDAL
REMOTESUPPLYPRESSURE
ACCUMULATORS
M
D
M
12
LL
DE TENT
PP EXTERNALRETURN
B
THER MAL
MANUAL CONTROL SYMBOLS
PILOT CONTROL SYMBOLS
F A
PILOT CONTROLLED
ROTATING SHAFTS
RELEASEDPRESSURE
N
SHUTTLE
FLUIDSTORAGE RESERVOIRS
950H, 962H and IT62H Wheel Loader Hydraulic System
TheFollowingcompon ngcomponentsarenotreferencedontheHydraul encedontheHydraulicSystemSchem icSystemSchematic:
-P ressuredifferentialrelief valve(A) -Headend solenoidvalve(ridecontrol)(B) )(B) -Signalreliefvalve(C) -Tiltanti-driftvalve(D) ftvalve(D) -Rod endsolenoidvalve(ridecontrol)(E) rol)(E) -Ride controlbalancesole olbalancesolenoidvalve(F) -Pilotpressurereducingvalve(G) -Liftcylinderheadendpressuretap(H) -LiftcylinderheadendpressuresensorforPayloadControlSyst oadControlSystemandAutodig(J) emandAutodig(J) -Hydrauliclockoutsole clockoutsolenoidvalve(K)
FOUR-WAY
THREE-WAY
CHECKVALVES
MEASUREMENT
Thisphotoshowsa frontviewoftheimplem ewoftheimplementcontrolvalve(36 olvalve(36)in theloaderframe.The followingcomponentscanbe seeninthisview:
ATTACHMENT
LINERESTRICTION VARIABLE andPRESSURE COMPENSATED
AB
PT SHIFTE D P O S I TO IN
GG
BOTTOMVIEW
VALVES
T WO P OS T I O I N
PUMP:VARIABLE and 2-SECTIONPUMP PRESSURECOMPENSATED
LINERESTRICTION (FIXED)
HYDR A U LCI PNEUM ATIC ENERGYTRIANGLES
CONTROL VALVES
PT NORMALPOSITION
24
NN
RESTRICTION
PRESSURE COMPENSATION
LINERESTRICTION (VARIABLE)
VALVE ENVELOPES
AB
H
CONTROLVALVES
SPRING
FLUIDCONDITIONER
D
K MM
FLUID POWER SYMBOLS
SOS
A
10
HH
42
B-7
3
A4 - or or CC- 4
34
D2 -
35
25 3 0 1 3
50 51
34
25
13
53
52
35
30
14
42
53
14
D -3 D -3
PP
Service Brake P ressure
F-3
QQ
Front Service Brake Pressure
F-4
RR
Rear Service Brake Pressure
F-4
XX
Tilt Cylinder Rod End Pressure
F-8
YY
TiltCylinderHeadEndPressur e
F-8
S OS
Hydraulic Oil Sampling Port
B-9
3
8
8
Alsolocatedonthe engineon therightsideofthemachineisthefan neisthefan controlandbrakeaccum olandbrakeaccumulator chargingvalve(30).The fanpumploadsensepressuretap(HH)islocatedabovethebrakecharging valve.
23
D -2
REAR VIEW
3
50
5 7
2
8
51 12 23
4
49 52 28 31
6
9
10
22 24
11
36 41
2 4 6
5 7 10
9
2
11 12 22
4
24 36 41
6
30
FRONT VIEW
Machine Component Locations
FAN & BRAKE PUMP
) s e h c n i 8 2 x s e h c n i 9 3 : s n o i s n e m i D ( , e g a P 0 3
4 0 9 7 8 8 R N E R
8
9
(15)Cylin derGp Tilt:242-4220 Tilt(MidLift):247-0497 Tilt(HighLift):245-7491 Tilt(Logger):245 -7487
6
4
5
(20)Cylin der-Lift(LH): 242-4272
XX
TILT
3RDFUNCTION
(50)Actu atorAs.ParkingBrake: 129-8090
RELEASE APPLY
FRONT AXLE PortALeverForward LeftHandLineonBoom (WhenViewedF romCab)
(ATTACHMENT)
R
(51)ValveGp- Parkin gBrake: 106-1774
(46)SwitchAs.-Foot BrakeLimi t: 105-6117 (45)ControlGp-FootBrake: 193-1448 (53)SwitchAs.-BrakePressure: 175-3244
(47)SensorGp- FootBrake: 214-4863
PortBLeverRearward RightHandLineonBoom (WhenViewedF romCab)
YY
1
(49)Accumulator- ServiceBrake: 213-8773
(21)Cylin der-Lift(RH) 242-4271
LIFT
2
3
(41)Accumulator-RideControl(RC): 245-2973
(23)ValveG p- ManualLowering: 112-1817
F
7
(24)Accumulator- PilotOil: 245-2975
TOBRAKE LIGHTS
F
A1
A2 PS
H
NO
Relief: 272-2334
Relief: 272-7003 256-2866
TOTRANSMISSION CONTROL
QQ
(52)Swit chAsParkingBrakeP ressure: 174-4312
NC C
C
Relief: 272-2334
Relief: 272-7003
PP
(25)PumpGp-Fan: 254-5146
RAISE F
HEAD END
RACK BACK
RR
ToFanMotor LS
P
T
(48)ValveGp- FootBrake: 215-3687 (30)ManifoldGpFanand BrakeCharge:242-1307
CC
RAISE
BACK HOLD
To CaseDrain Manifold
GG
Relief: 4T-7581
RACK
REARAXLE
PORT A
E HOLD
HOLD
LOWER
PORT B
DUMP
HYDRAULIC TANK
BRAKE SYSTEM
E (8)CylinderGp-Steer: 163-0324
Relief: 282-4349
(12)ScreenGp: 154-2883
a1
FLOAT
(10)Valv eGp- Pilot: 147-1790
LL
KK
(7)ValveGp-Steer: 124-8635
CROSSOVER RELIEF CYLPORT "B"
CYLPORT "A" SHUTTLE VLV
LOWER/
DUMP
FLOAT
Relief: 247-8632
LS D
Relief: 254-5789
PORT “B”
LOADSENSING PUMP PORT
DR
DIRECTIONALSPOOL
(36)Valv eGp- Control: 2FunctionStandard:261-4171 2FunctionW/R C:261-3682 2FunctionW/R C:261-3683 3FunctionStandard:261-4172 3FunctionW/R C:274-8055
PILOTPORT"A"
D
(6)ValveGpNeutralizer:8J-1553
MAKE UP CHECK PILOT PORT"B"
LINE PATTERNS
(55)CylinderGp -Quick Coupler: 237-0946
) s e h c n i 8 2 x s e h c n i 9 3 : s n o i s n e m i D ( , e g a
4 0 9 7 8 8 R N E R
TANK PORT
PressureLi ne
QUICK COUPLER(ATTACHMENT)
(9)ValveGp-Check: 111-7775
Pilot/LoadSensingPressure Drain/ ReturnLines
(30)ManifoldGpFanand BrakeCharge: 242-1307
TO FRONT BRAKES
TO REAR BRAKES
A1
NN
ComponentGroup A2
PS YY
52 (54)ValveGpQuickCoupler: 180-8585
Taps (Pressure,S ampling,Sensor)by Components
REGULATED PRESS.PORT TOPILOT VALVE
e1
CALLOUTS
C
(11)ValveGp- Shutt le: 8J-6875
a1
AirLine
PRESSURE REDUCING VALVE
MM
b1
Attachment
BACK UP RELIEF
d1
letter
FF
bynumber
C
c1
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
COMMAND CONTROL STEERING ATTACHMENT
IMPLEMENT PUMP OUTPUT IMPLEMENT PILOT SUPPLY OIL PRIMARY STEERING PUMP CIRCUIT STEERING CIRCUIT SECONDARY STEERING CIRCUIT
(56)ValveGpManual:112-1817
(4)ValveGp-Meutralizer: 146-7571
IMPLEMENT PUMP LOAD SENSING CIRCUIT MAIN RELIEF VALVE LOAD SENSING CIRCUIT
(5)ValveGp-Steer: 142-4000
PILOT CONTROLSP OOL
SUPPLY LINE
F
DRAIN / RETURN LINE LIFT CYLINDER CIRCUIT TILT CYLINDER CIRCUIT
CYLP ORT "B"
AUXILIARY CIRCUIT
P
LS
BRAKE CHARGE VALVE AND FAN CONTROL CIRCUIT
T
BRAKE CONTROL CIRCUIT
HH
(26)MotorGpFan:246-6152
PILOT PORT "B"
Connectionb1 onlyfor CommandControl Steering
(27)ValveGpCoolerBypass: 244-1426
B
(14)PumpG p- Implement: 254-4108
P 0 3
AA
SOS
EE
(34)Valve Gp- SecondarySteerD iverter: 141-2597
e1
(13)PumpGp-Steerin g: 241-9299
B
PILOT PORT "A"
e1 d1
CROSSOVER RELIEF CYLP ORT "A"
(3)Cylind erGpSteer:230-4176
DIRECTIONALSPO OL
(35)PumpGp-SecondarySteer: 275-8544
DD
(1)Hand MeteringUnit: 230-4176
(25)PumpGp-Fan: 254-5146
(28)FilterGp- ReturnOil: 244-1031
PUMP PORT
(31)FilterGpCaseD rain: 249-2334
BACK-UP RELIEF
MAKE-UP CHECKS
c1
(32)Valv eGpBreakerRelief: 220-0814
A
(2)ConnectorOrifice:122-2340
b1
c1
HMUSUPPLYPORT
FF
A
HMU STEER AND 3PC IMPLEMENT (33)TankGp- HydraulicOil: 237-2742
950HAND962HWHEEL LOADERHYDRAULICSYSTEMSCHEMATIC
d1
PART#:241-0475CHG 09andBRAKE SYSTEM PART#244-1398CHG00 Componentsareshown installedona fullyoperablemachine. Referto theappropriateServiceManual forTroubleshooting,Specificationsand SystemsOperations
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