System Schematic
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988H Wheel Loader Electrohydraulic System
[UENR0331]
988H Wheel Loader Electrohydraulic System
Hydraulic System Troubleshooting
988H Wheel Loader Electrohydraulic System
MID 082 - CID 0296 - FMI 09
ELECTRICAL AND STARTING SYSTEM
988G Wheel Loader Electrohydraulic System
Glossary of Electrical Terms
988H Wheel Loader Electrohydraulic System
System Schematic
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| Illustration 1 | g00691457 |
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(1) Lift Cylinder
(2) Tilt Cylinder (3) Lift Cylinder (4) Ride Control Valve (5) Ride Control Accumulator (6) Main Control Valve (7) Steering Pump Control Valve (8) Brake Accumulator (9) Main Relief Valve (10) Steering Pump (11) Brake Accumulator Charging Valve (12) Float Sequence Valve (13) Pilot Relief Valve (14) Check Valve (15) Hydraulic Oil Cooler (16) Fan Drive Motor (17) Hydraulic Oil Filter (18) Pilot/Brake Pump (19) Case Drain Filter (Steering Pump) (20) Fan Drive Speed Control Valve (21) Wax Capsule (Thermal Relief Valve) (22) Case Drain Filter (Fan Drive Pump) (23) Fan Drive Pump (24) Manual Ball Valve (25) Implement Flow Control Valve (26) Case Drain Filter (Implement Pump) (27) Check Valve (28) Pilot On/Off Solenoid Valve (29) Implement Pump (30) Hydraulic Oil Manifold (31) Hydraulic Oil Tank (32) Breaker Relief Valve (A) Steering Supply Line (B) Steering Pilot Supply Line (C) Steering Return Line (D) Brake Return Line (E) Rear Brake Supply Line (F) Front Brake Supply Line | |
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| Illustration 2 | g01977181 |
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| Illustration 3 | g01977182 |
Information System:
3500B and 3500C Auxiliary Engines, Generator Set Engines, and Generator Sets
Plate Locations and Film Locations
(Custom) 367-7349 and Quick Coupler For Wheel Loaders
Declaration of Conformity
3500B and 3500C Marine Engines
Turbocharger
2009/09/30
A New Steering Filter Cover is Now Used {4304, 5068}
Frozen Water Damages the Radiator Guard{7155}
C27 and C32 Engines for Caterpillar Built Machines
Component Location
2009/09/30
Water Pump Operation {1361, 7555}
2009/09/30
Water Pump Operation {1361, 7555}
AD30 Underground Articulated Truck
Additional Messages
2010/01/22
Improved Track Rollers Are Now Used On the D10T {4180}
2009/10/29
Improved Gaskets for the Oil Filter Base Are Now Used on Certain Engines {1306, 1308, 7555}
2009/09/21
A Guard For the Pivot Shaft Seal Is Now Used On the D11T {4151}
Procedure To Increase The Serviceability Of The Air Cleaner On D7G2 Machines That Are Equipped With A 273-9225 Engine Enclosure Group Or A 291-5668 Engine Enclosure Group {1051}
924H, 924Hz, 928Hz and 930H Wheel Loaders Machine Systems
Lift Cylinder - Remove and Install
986H Wheel Loader
Camera - If Equipped
Orientation of the 285-4106 Valve Cover Seal and the 217-5701 Bulk Seal {1107}
2009/09/30
New AccuGrade Software Version 11.10-B is Now Available {7220}
(Custom) 356-2124 Fusion Pallet Fork
Declaration of Conformity
A System Malfunction on the Blade Float on Certain Track-Type Tractor Differential Steering{5057}
930G Wheel Loader Machine Systems
Piston Pump (Steering, Implement, Pilot) - Disassemble
930G Wheel Loader Machine Systems
Piston Pump (Steering, Implement, Pilot) - Assemble
Installation Procedure for 352-8456 Lines Gp {5057}
2009/09/28
Improved Turbocharger on C4.4 Engines {1052, 1053}
3500 Engines
Air Inlet and Exhaust Lines