CHAPTER 3 – INSTRUMENTS AND CONTROLS
Graders Operations With ZF Power-Shift Transmission
845B and 865B 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 converter 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 fluid 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: 1. The engine should be running and the service brake pressure at operational pressure. 2. The transmission control lever must be in neutral position. 3. Pull the lock backwards and press on the upper part of the parking brake switch, located on the lateral console panel. 4. Operate the machine by positioning the transmission control lever into forward (F) or reverse (R) position. NOTES: •• If the engine is not running, the machine will remain braked, as the brake releasing is performed by the hydraulic pressure. •• If the engine is stopped, without actuating the parking brake switch, the brake will be actuated automatically. In this case however, to start the engine again it will be necessary to actuate the parking brake switch to the “Braked” position.
parking brake switch
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