7-1
Chapter 7
MAINTENANCE AND ADJUSTMENT
Park the machine on a rm and level surface and lo-1.
wer the blade to the ground. Install blocks on all whe-
els to avoid machine from moving.
Loosen and remove the parking brake cover. 2.
Start and run the engine at low idle with the blade on 3.
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.
Release the parking brake.4.
CHECKING OF THE PARKING BRAKE
845B / 865B / 885B models with ZF Transmission
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 en-
gaged.
Put the parking brake switch in “OFF” position.5.
Activate the service brakes and select a gear on the 6.
transmission.
At this moment, the parking brake indicator light on 7.
the instrument panel will turn off. Before proceeding,
put transmission back to neutral.
Turn the adjusting screw clockwise until the brake 8.
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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