CHAPTER 3 – INSTRUMENTS AND CONTROLS
3-36
GRADERS OPERATIONS
WITH ZF POWER-SHIFT TRANSMISSION
845B / 865B / 885B models with ZF Transmission
This machine is equipped with a 6-speed forward and 3-speed reverse power-shift transmission, with torque converter
and “lock-up”.
CAUTION DURING START-UP OF THE ENGINE
A safety devise permits to start the engine with the transmission in Neutral position only, and with the parking brake
applied. For additional information on engine starting, refer to “Engine Starting”.
CAUTION: Make sure the parking brake is applied by pressing on the lower part of the switch on the side
panel. An indicator light glows on the front panel, indicating that the parking brake is applied.
RELEASING OF THE PARKING BRAK
CAUTION: Make sure that the parking brake is released before operating the machine. Due to the conver-
ter high multiplication torque, many times it is not possible to notice that the parking brake of the machine
is applied. Should this happen, the transmission uid and brake discs will overheat, as well as premature
wear of the brake caliper pads will occur.
A machine equipped with a torque converter will not present any engine brake when is parked. Make sure that
parking brake is properly applied, if necessary install wheel blocks.
With transmission in neutral position and the parking brake released, activate the service brakes to avoid
the machine from moving.
Release the parking brake following the steps below:
The engine should be running and the service brake 1.
pressure at operational pressure.
The transmission control lever must be in neutral po-2.
sition.
Pull the lock backwards and press on the upper part 3.
of the parking brake switch, located on the lateral con-
sole panel.
Operate the machine by positioning the transmission 4.
control lever into forward (F) or reverse (R) position.
NOTES:
If the engine is not running, the machine will re-
•
main braked, as the brake releasing is performed
by the hydraulic pressure.
If the engine is stopped, without actuating the pa-
•
rking brake switch, the brake will be actuated au-
tomatically.
PARKING BRAKE SWITCH
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