Relief Valve (Brake Oil Cooler) - Test and Adjust
Show/hide table
 | |
| Illustration 1 | g00278436 |
Front view of hydraulic tank (1) Rear brake oil cooler relief valves | |
Show/hide table
 | |
| Illustration 2 | g00519933 |
View of the hoist control valve Location of test port for the front brake oil cooler relief valve | |
- Remove the plug from the test port. Install a 2P-8421 O-Ring Adapter into the test port.
- Install a 6V-3965 Nipple Assembly to the adapter. Connect a hose to the nipple.
- Install an 8T-0854 Pressure Gauge (0 to 1000 kPa (0 to 145 psi)) to the hose.
- Move the hoist control lever to the HOLD position and start the engine.
- Look at the pressure gauge. The maximum pressure reading should be 790 ± 20 kPa (115 ± 3 psi).
- As needed, adjust the number of shims (3) in order to achieve the correct relief valve pressure setting. Do not adjust shims (2).
Show/hide table
Table 1 Shims for Adjusting the Relief Valve Pressure Setting Part Number Thickness Pressure Change 8B-4624
0.81 mm (0.032 inch)
30 kPa (4 psi)8B-4624
0.81 mm (0.032 inch)Do not adjust.
Show/hide table
 | |
| Illustration 3 | g00518399 |
Brake oil cooler relief valve (2) 8B-4624 Shim (3) 8B-4624 Shim | |
Caterpillar Information System:
C-9 Engine for TK711, TK721, TK722, TK732, TK741, TK751, and TK752 Track Feller Bunchers Engine Oil in Cooling System
TK711, TK721, TK722 and TK732 Track Feller Bunchers Machine Systems Swing Drive - Disassemble
554 Forwarder and 574 Forwarder Stopping the Machine
793C Off-Highway Truck/Tractor Power Train Lateral Control Rod (Rear Axle Housing) - Assemble
517 Track-Type Skidder Engine Supplement Fuel Filter (Primary) and Fuel Filter Base - Remove and Install
517 Track-Type Skidder Engine Supplement Fan Drive - Assemble
517 Track-Type Skidder Engine Supplement Fan Drive - Disassemble
69D and 769D Off-Highway Truck and 771D Quarry Truck Air System and Brakes Service and Parking Brake (Rear)
517 Track-Type Skidder Engine Supplement Engine Oil Filter and Base - Install
517 Track-Type Skidder Engine Supplement Engine Oil Filter Base - Disassemble
517 Track-Type Skidder Engine Supplement Engine Oil Filter Base - Assemble
517 Track-Type Skidder Engine Supplement Engine Oil Filter and Base - Remove
980G Wheel Loader Power Train Axle Shaft - Remove and Install
824G , 825G and 826G Landfill Compactor Cleaner Bar Tips - Replace
784C and 785C Off-Highway Trucks Machine Systems Window Wiper Motor - Remove and Install
3176C and 3196 Industrial Engines Engine Oil Pressure Sensor - Remove and Install
3176C and 3196 Industrial Engines Speed/Timing Sensor - Remove and Install
69D and 769D Off-Highway Truck and 771D Quarry Truck Air System and Brakes Temperature Sensor (Brake Oil)
3412E Engine Supplement for 773D Off-Highway Trucks and 775D Off-Highway Quarry Trucks Engine Front Support - Install
69D and 769D Off-Highway Trucks and 771D Quarry Truck Power Train Pressure Switch (Secondary Brake and Parking Brake)
69D and 769D Off-Highway Trucks and 771D Quarry Truck Power Train Pressure Switch (Service Brake and Retarder)
3524B Engines for Off-Highway Trucks Fuel in Cooling System
3500B and 3500B High Displacement Generator Set Engines Oil Contains Coolant
D250E Series II and D300E Series II Articulated Trucks Power Train Transmission Hydraulic Control Valve - Remove