7/26/2019 M 325 D HYD(1)

1/2

7/26/2019 M 325 D HYD(1)

2/2

RENR8087

30Page,(Dimensions:39inchesx28inches)

THISSCHEMATICISFORTHEM325DMATERIALHANDLER

PART#: 294-9973 (V) CH02

Components are shown installed on a fully operable machine with the key and engineoff and transmission shifter in neutral.

LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

Taps (Pressure, Sampling,Sensor) by letter

Components bynumber

YY

52

Refer to the appropriate Service Manualfor Troubleshooting, Specifi cations and Systems Operations

DRAIN / RETURN LINE

HYDRAULIC CIRCUIT COLOR DESCRIPTIONS

IDLE PUMP OUTPUT

DRIVE PUMP OUTPUT

STEERING CONTROL CIRCUIT

PILOT PUMP OUTPUT

OSC CYLINDER LOCK CONTROL CIRCUIT

GRAPPLE OR BUCKET CYLINDER CONTROL CIRCUIT

HYDRAULIC CAB RISER CYLINDER CONTROL CIRCUIT

SUPPLY LINE

GENERATOR CIRCUIT (EAME)STABILIIZER CYLINDER CONTROL CIRCUIT

STICK CYLINDER CONTROL CIRCUIT

TRANSMISSION CLUTCH CONTROL CIRUIT

BOOM CYLINDER CONTROL CIRCUIT

GENERATOR CIRCUIT (NACD)

STEERING PILOT PUMP OUTPUT

TRANSMISSION OIL CIRCULATION PUMP

HYDRUALIC CAB RISER & GRAPPLE ROTATE SUPPLY CIRCUIT

BRAKE CYLINDER CONTROL CIRCUIT

POWER SHIFT CONTROL CIRCUIT

TRAVEL MOTOR CONTROL CIRCUIT

SWING MOTOR CONTROL CIRCUIT

12345679

A

C

D

E

F

12345679

A

B

C

D

E

F

B

8

8

FF

GG

HH

KK

LL

JJ

EE

BB

AA

CC

DD

SS

TTUU

XX

NN

MM

RRQQ

PP

B2P2 P1

DR

A2 B1 A1 PRV1

B2P2 P1

DR

A2 B1 A1 PRV2

TA

P

PRV3

A2A1 A3 A4 A5 A6 A7 A8

B2B1 B3 B4 B5 B6 B7 B8

C

P T

21

3 2 14

P T

1 4 3 2

P T

P T

12

P T

12

3

PRV(3)

2

1

3

PRV(2)

2

1

3

PRV(1)

2

1

A3A4 A2 A1M2

BK

P

P1

T1/1PST

Z

T5

SPT1/2MA5A5

INOUT

DR

P

T

A2

A1

B1

B2

P A

T

B

A

G

D

C

E F

N

P

DS2

S1 S2

B1 B2

DS1

A2

S3

S1

T

S4

A4

A1

M1

G1A3 Pm

Pi

G2

M2

Pn2

Ps2

PsM2

Ps1

Pn1

PSm1

M3

DrM

Dr2

M4

DR1

P

L

LD

T

R

P

A

P1 YLD

P

B

P T

CFEF

XA XB

P

PA1PA2 P

M

T

A2 A1

M

LS

T

PB2B2 B1 PB1

A2

A3

B2

A1

B1

B4

PB2

A4

PL3

B3

PL2

PL1

A

BPB1

DR

DR

DR

T

DR

APi

X

C

DR

T A Pi

X

C

MBLEL G

X

G

MAT2

T1U

M1

B

S

A

K

MAX

MIN

B

MB

MK

EBEK

MS

Z1

T PP T

Z2

Z1

Z2

MU

B

PG

DR

2

5

A

FINESWING

4 6

3

1

SWIVEL

BL3T AL4 aL4BL2R 2 A L 3 a L3

BL1

AL1

AL2 aL2 aR1a l1 D i P i BR2BR1 AR1 aR2 AR3AR2 aR3 BR3 R1aR4 Pi1 AR4 BR5

BP3

BP2

BR4

A

A R5 a R5 R 3

HR

S1 P T

5

6

bR5bR3 bR4 Di1bR2PL PR bR1Pi5bL1bL2 DSTPi3Di2 Pi2 bL3 Di3HL bL4

OPEN

OPEN

FWD

LOWER

LEFT

OUT

IN

SWINGRIGHT

STABILIZERIN

TRAVELREV

GRAPPLECLOSE

BUCKETCLOSE

BOOM(1)

RAISE

STICK(2)

OUT

SCM

IN

STICK(1)OUT

RAISE

BOOM(2)

SWINGBRAKE

OSCAXLEREST

IMPLEMENT

TRAVELMOTORCONTROL

A

B

STICK OUT

S W L S W R

STICK IN

BOOM DOWN

BCT CL BCT OPB O OM U P

DOWN

UP

FWD

REVSTABILIZER

AUXCIRCUIT FWD

REVTRAVEL

U

DEG

SWIVEL

4 2 13

0

MA6A6

TRAVEL

bL1

aL1

aL1

bL1 a

L2

aL2

aL2

bR1

aR1

bR1

aR1

bR2

bR2

SCM

bR2

bR3

aR2

aR3

aR2

aR4

aR4

Pi

Pi

FILTER GPPILOT HYD.145-7750

FILTER GPCASEDRAIN126-2075

VALVEGPBRAKECONTROL249-5527

ACCUMULATOR ASBRAKECHARGE255-8546

ACCUMULATOR ASBRAKECHARGE255-8546

FILTER GPRETURNOIL188-4140

VALVEGPCOOLER BYPASS173-4672

FILTER GP

STEER /PILOT HYD.

145-7750

PUMP GPMAINHYD200-3343

SENSOR ASIDLER PUMPPRESSURE221-8859

SENSOR ASDRIVEPUMPPRESSURE221-8859

PUMP GPGENERATOR(EAME)136-8899

VALVEGP

STEERING

235-0772

VALVEGPPRIORITY(STEER/HCR)188-1814

VALVEGPTRAVELANTI-CAVITATION235-0789

VALVEGPGENFLOWCONTROL(EAME)242-2956

MOTOR GPHYDGEN(EAME)

VALVEGPHCR/GRAPPLECONTROL274-5501

GRAPPLE

ROTATE

ROTATE

CW

ROTATE

CCW

CAB

LOWER

CAB

RAISE

VALVEASHCR CHECK257-2891

ACCUMULATOR ASHYDCABRISER255-8547

VALVEGPLOADCONTCABLOWERING185-1247

CYLINDER GPHYDCABRISER235-8287

VALVEGPSHUT OFF(HCR)226-9860

VALVEGPHCR/GRAPPLEPILOT SOLENOIDS259-7429

(HCR UP)

(HCR DOWN)

VALVEGPPRIORITY(PRV1)232-4102

VALVEGPPRIORITY(PRV2)232-4102

VALVEGPHEAVYLIFTSOLENOID121-6303

VALVEGPNEGATIVEFLOWCONTROLSOL171-0188

VALVEGPGRAPPLEFLOWCONTROL168-0712

SWITCH ASGRAPPLEPILOT PRESSURE167-3466

MANIFOLDGPPILOT CONTROL273-1393

ACCUMULATOR GPPILOT8U-6159

SENSOR ASXMSNCLUTCHPRESSURE188-3823

VALVEGPSTICKINPRIORITY(PRV3)206-3354

VALVEGPPRESSUREREDUCING184-1227

VALVEGPPILOTSHUTTLE185-0462

SWITCH ASPILOT PRESS167-3466

VALVEGPRH JOYSTICK206-3303

VALVEGPLH JOYSTICK206-3304 VALVEGP

TRAVELPEDAL237-2261

VALVEGPAUX PEDAL112-5704

VALVEGPSTABILZERHANDLE235-0781

SWITCH ASAUX PILOT PRESS167-3466VALVEGP

AUX SHUTTLE123-2549

MOTOR GPSWING179-9775

VALVEGPSWING CUSHION158-9085

VALVEGPSTICKCYLINDERLOADCONTROL292-0394

VALVEGPSTICKCYLINDERLOADCONTROL292-0394

VALVEGPSTICKCYLINDERDOUBLECHECK233-7881

VALVEGPREAR STABCYLINDERLOADCONTROLSOL196-7543

VALVEGPFRONT STABCYLINDERLOADCONTROLSOL196-7543

CYLINDER GPLHR STABILIZER237-4165

CYLINDER GPRHR STABILIZER237-4165

CYLINDER GPLHFSTABILIZER237-4165

CYLINDER GPRHF STABILIZER237-4165

CYLINDER GPSTICK

WHEELBRAKE

WHEELBRAKE

XMSNGP241-3686

MOTOR GPTRAVEL271-2885

CYLINDER GPLHR OSCLOCK236-5773

CYLINDER GPRHR OSCLOCK236-5773

ACCUMULATOR GPOSCAXLEREST8U-2924

CYLINDER GPRHF STEER234-4115

CYLINDER GP

LHF STEER234-4115

ACCUMULATOR GPBOOMCYLINDER225-3394

ACCUMULATOR GPBOOMCYLINDER225-3394

AUXTOOL

VALVEGPLH BOOMCYLCHECK274-4230

VALVEGPRH BOOMCYLCHECK274-4230

VALVEGPSHUT OFF(BOOM)145-7166

CYLINDER GP

LH BOOMCYLINDER GP

RH BOOM

CONNECTOR GP

ORIFICE(HCR)

257-2980

VALVEGP

MANUALBOOM

LOWERING

232-7304

VALVEGPBOOMCYLHEADENDRETURNSOL215-4919

VALVEGPBOOMCYLRODENDRETURNSOL215-4890

VALVEGPMAINCONTROL274-4231

VALVEGPFLOW CONTROLBOOMFLOAT292-2809

SB

SCM

bR3

bR3

GRAPPLE ORBUCKET

SCMaR3

aR3

SMARTBOOM

SB

WITHOUTSMART BOOM

SWITCH ASSERVICEBRAKEPRESSURE252-6677

SWITCH ASBRAKEOILACCUMULATORPRESSURE252-6677

SWITCH ASPILOT/BOOMDOWNPRESSURE167-3466

VALVEGPPILOT/BOOMDOWNSOLENOID185-0472

21

P

B

m2

K

m1

B

K

PUMP GPGENERATOR(NACD)274-5658

MOTOR GPHYDGEN(NACD)251-8483

SWITCH ASGENPUMPPRESSURE131-9203

EAMENACD

aR4

SB

CYLINDER GPBUCKET

BR3 AR3

BR3

AR3

bR2

bR3

SCM

aR4

SB aR3

SCM

SCM

SCM

SCM

SCM

OUT IN

DR

VALVEGPCABRISERFLOW CONTROL257-2892

WITHOUTSMART BOOM

STICKREGEN

STICKUNLOADING

NFCRELIEF

NFC

ORIFICE

VARIABLESWING

PRIORITY

MAINRELIEF

STRAIGHT

TRAVEL

NEG FLOWCONTROLSOLENOID

BOOMREGEN

NFCRELIEF

LINE

RELIEF &MAKEUP

MEDIUMPRESSUREUNLOADING VALVE

MEDIUMPRESSURESIGNALRELIEF

POWERSHIFT PRV

PILOT

MEDIUMPRESS

CROSSSENSING

PUMP CONTROL

ACTUATOR

ACTUATOR

PUMPCONTROL

M