SENR4998-01
12 Page, UHE
SENR4998-01
January 1994
980F And 980F Series II Wheel Loader
Hydraulic System
980F
5XJ1-587
8CJ1-UP
3HK1-UP
980F Series II
5XJ588-UP
4RN1-UP
8JN1-UP
©
1994 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR4998-01
12 Page, UHE
ITEM NO. COMPONENT
1 ATTACHMENT CYLINDER
2TILTCYLINDER
3 LIFT CYLINDER
4 ATTACHMENT PILOT CONTROL VALVE
5 TILT P ILOT CONTROL V AL VE
6 LIFT PILOT CONTROL VALVE
7 PILOT CONT ROL VALVE GROUP
8 RELIEF VALVE (TILT CYLINDER ROD END)
9 RIDE CONTROL ACCUMULATOR
10 ORIFICE
11 DIVERTER VALVE GROUP
12 SOLENOID VALVE
13 CHECK VALVE
14
DIVERTER VAL VE GROUP
2
15 RELIEF VAL VE ( AUXILLARY CYLINDER ROD END)
16 RELIEF VALVE (AUXILLARY CYLINDER HEAD END)
17 MAIN CONTROL VALVE GROUP
18
CHECK VALVE (LIFT CYLINDER HEAD END)
3
19
AUXILLARY CONTROL VALVE
20 MAIN RELIEF VALVE
21 PRESSURE CONTROL AND SELECTOR VALVE
22
CHECK VALVE
23 SOLENOID VALVE (MATERIAL HANDLER)
24
TILT CONTROL VALVE
25 RELIEF VALVE (TILT CYLINDER HEAD END)
26 LIFT CONTROL VALVE
27
CHECK VALVE (LIFT CYLINDER ROD END)
3
28
DIVERTER SPOOL VALVE
29 CHECK VALVE
30 STEERING CYLINDER
31
FLOW COMPENSATOR VALVE (MATERIAL HANDLER)
4
32 PILOT RELIEF VALVE
33 OIL COOLER
34 STEERING NEUTRALIZER VALVES
35
STEERING, SUPPLEMENTAL IMPLEMENT AND
PILOT PUMP
5
36 STEERING CONTROL VALVE
37 IMPLEMENT P UMP
38 FLOW SWITCH
39 VACUMM BREAKER VALVE
40 HYDRAULIC TANK
41 HYDRAULIC FILTERS
42 METERING PUMP (STEERING)
43 SUPPLEMENTAL STEERING DIVERTER VALVE
44 SUPPLEMENTAL STEERING PUMP
1
8CJ01154 - UP
2
PRIOR TO 8CJ01154
3
NOT USED (REMOVED) WITH RIDE CONTROL
4
PART OF MATERIAL HANDLER OPT I ON
5
CENTER SECT ION ONLY USED WITH MAT ERIAL
HANDLER
980F HYDRAULIC SCHEMATIC
