SECTION 5 MAINTENANCE
Page 22
OM560C99/1E DRESSTA
BRAKES
Fig. 5.14. Location of Transmission Disconnecting Valve
1- Supply Hose 2- Hose Fitting
In case of failure of one of the circuits of the service brake system, the other circuit will serve as an
auxiliary brake as it enables stopping of the machine.
5.7.2. PARKING BRAKE
The parking brake is mounted on the front differential housing. The principle of operation is shown
in Fig. 5.15. It is a disc type brake that is spring actuated and hydraulically released. The brake is
electrically controlled with a switch located on the instrument panel, see INSTRUMENTS AND
CONTROLS.
CHECKING THE OPERATION
WARNING! When testing the parking brake, be sure the area near the machine is
clear of personnel and obstructions because the machine may move during this
test.
1. Start and operate the engine at low idle to fill nitrogen accumulators and warm hydraulic system
oil.
2. Apply the parking brake, if not applied.
3. With the machine stopped with service brake and engine running at low idle shift the
transmission into second speed forward.
4. Release service brake and slowly bring the engine to maximum speed. The machine should not
move. If an adjustment is necessary consult service personnel.
WARNING! If the parking brake does not hold the machine stationary correct the
cause. Until the cause is corrected, park the machine on level ground and block
the tires to prevent it from moving.
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