Chapter 7
MAINTENANCE AND ADJUSTMENT Checking of the parking brake
845B and 865B models with ZF Transmission 1. Park the machine on a firm and level surface and lower the blade to the ground. Install blocks on all wheels to avoid machine from moving.
NOTE: The hydraulic pressure will not be applied to the parking brake unless the parking brake switch is turned off, the service brakes activated and the transmission engaged. 5. Put the parking brake switch in “OFF” position. 6. Activate the service brakes and select a gear on the transmission. 7. At this moment, the parking brake indicator light on the instrument panel will turn off. Before proceeding, put transmission back to neutral.
2. Loosen and remove the parking brake cover. 3. Start and run the engine at low idle with the blade on the ground. IMPORTANT: For this procedure, it is necessary the help of another person. The operator must remain all the time in the cab to operate the service brakes and to turn off the machine, in case of a mechanical failure. 4. Release the parking brake.
8. Turn the adjusting screw clockwise until the brake pads touch the brake disc. Then, turn the adjusting screw counterclockwise one turn. Tighten the jam nut to lock the adjusting screw. Install the parking brake cover.
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