Esquema Hidraulico 777 f

8/10/2019 Esquema Hidraulico 777 f

1/4


2/4

R E N R 8 3 0 5 - 0

1 V O L 1 o

f 2

3 0 P a g e , (

D i m e n s

i o n s :

3 9 i n c

h e s x

2 8 i n c

h e s

)

DRAIN / RETURN LINE

HYDRAULIC CIRCUIT COLOR DESCRIPTIONSELECTRICALCIRCUITSBRAKE CHARGING CIRCUITPUMP

LOCK-UPCLUTCH VALVE PUMPCIRCUIT

BRAKE COOLING

HOISTPUMP CIRCUIT

PUMPSUPPLYLINE

HOISTCYLINDERS CIRCUIT

BRAKE CIRCUIT(FRONTAND REAR)

THIS SCHEMATIC IS FOR THE 777F AND 777F OEM OFF-HIGHWAY TRUCKPART #: 255-6188 CHG 04Components are shown installed on a fully operable machine with the key and engine off and transmissionshifter in neutral.

Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations

LINE PATTERNS

Drain / Return LinesComponent Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

Taps (Pressure, Sampling,Sensor) by letter

Components by number

YY

52

7

78 6 5 4 3 2 1

A

B

C

D

E

F

1234568

F

E

D

C

B

A

A

B

D

E 59

8

From Torque Converter Lock-up Clutch Pilot

(Volume 2, F-3)

ADJUSTERGP - SLACK

RIGHT REAR

LEFT REAR

M

P

T

A

1

4

5

P1

T1

A1

PARKBRAKESOLENOID

BLEEDDOWNSOLENOID

3

ECM

P2

LEFTFRONT

RAISESOLENOID

LOWER, FLOAT,SNUBSOLENOID

BRAKECOOLING RELIEF

LOWER

FLOAT

SNUB

HOLD

RAISE

RAISERELIEF

LOWERRELIEF

DUALSTAGESIGNALSPOOL

MAINRELIEFDUMPSPOOL

7

10

10

28 27

11A

11A

9

20 13

14

5

2B 4B

1535 54

11B

11B

2324

22

1

4A32A

28 27

1221

FRONT BRAKES

WET DRY

LEFTFRONT

RIGHTFRONT

RIGHTFRONT

1716

58

6

H

G

P

18

M

N

O

LK

D

E

F

29

C

B

A

J

From Torque ConverterLock-up Clutch.(Volume 2, F-3)

From Torque ConverterLock-up Clutch. (Volume 2, E-2)

From Torque Converter (Volume 2, F-4)

See Note A

See Note A

See Note A

19

47 26

14

I

Note A: Dry brake configuration


3/4


4/4

R E N R 8 3 0 5 - 0

1 V O L 2 o

f 2

3 0 P a g e , (

D i m e n s

i o n s :

3 9 i n c

h e s x

2 8 i n c

h e s )

DRAIN / RETURN LINE

HYDRAULIC CIRCUIT COLOR DESCRIPTIONSELECTRICAL CIRCUITS

STEERING PUMP CIRCUIT

TRANSMISSION AND TORQUE CONVERTER SCAVENGE PUMP CIRCUIT

LOCK-UP CLUTCH VALVE PUMP CIRCUIT

BRAKE COOLING

PUMP SUPPLY LINE

TRANSMISSION CHARGE PUMP CIRCUIT

TORQUE CONVERTER CHARGE PUMP CIRCUIT

SECONDARY STEERING PUMP CIRCUIT

THIS SCHEMATIC IS FOR THE 777F AND 777F OEM OFF-HIGHWAY TRUCKPART #: 255-6188 CHG 04

Components are shown installed on a fully operable machine with the key and engine off andtransmission shifter in neutral.

Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations

LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

Taps (Pressure, Sampling,Sensor) by letter

Components by number

YY

52

8 6 5 4 3 2 1

A

B

C

D

E

F

1234568

F

E

D

C

B

A

7

7

ECM

M

B

AC

D

E

A

B

LOAD SENSE STEERING SYSTEM

POWERTRAIN:TRANSMISSION AND TORQUE CONVERTER

15

35

54

535251

504155

4726 46

48

42

1

43

25

18

49

60

44 45

S

39

30

38

31

61

40

Q

33

32

36

34

V

T

U

R

W

HYDRAULICCONTROLS

TORQUECONVERTER

TRANSMISSION

LOCK UPVALVE

LOCK-UPCLUTCHPRESSURE

TO BRAKECOOLING

TO BRAKECOOLING

To Traction Control Valve

To Hoist PilotSignal Resolver

To Rockford Fan Clutch Control(Attachment)

37

56

57

X

Y

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Esquema Hidraulico 777 f