Case 721D Wheel Loaders Operator's Manual 6-35092NA - PDF DOWNLOAD

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MAINTENANCE/ADJUSTMENT C. Park Brake switch in engaged position. 3. To test these functions: A. Start on a clear level surface. B. With Step 1, A through C complete, start the engine release the park brake, red warning light out. C. Shutdown the engine turn the key switch to the ON position, engine off the Park Brake light should come ON. D. Release the park Brake using B and C in Step 1. Make sure the park brake light is out. E. Pump the service brakes, the low brake pressure warning light should come ON first. Continue to pump the service brakes. Pump until the park brake light comes ON, pump the brakes three more times, it could require as many as forty pumps total. F. Start the engine and allow the brake pressure to build until the warning light goes out. H. Put the transmission in F or R and back to N the brake light must stay ON. I. Put the park brake switch in the engaged position, attempt B and C in Step 1. The park brake light must stay ON. 4. Put the park brake switch in the release position, attempt B and C in Step 1. The park brake light must turn OFF, A. Allow the machine to roll slowly forward with the transmission in F put the park switch to engage. The machine must come to a stop immediately. Park light ON. Transmission disengages. If all steps are working positive the system works correct. If there was a problem with the test contact your dealer.

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G. Depress the service brake and release. The light must stay ON.


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