Relief Valve (Brake Oil Cooler) - Test and Adjust
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| Illustration 1 | g00801811 |
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Front view of hydraulic tank (1) Rear brake oil cooler relief valves | |
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| Illustration 2 | g00519933 |
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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) .Show/hide table
Illustration 3 g00518399 Brake oil cooler relief valve
(2) 8B-4624 Shim
(3) 8B-4624 Shim - As needed, adjust the number of shims (3) in order to achieve the correct relief valve pressure setting. Do not adjust shims (2).
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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.
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