CHECKING OF THE PARKING BRAKE

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.

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. 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.

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.

845b, 865b and 885b with fUNK Transmission

Park the machine on a leveled surface. Wedge the wheels and lower the blade to the ground to avoid the machine from moving. Keep engine stopped. Apply the parking brake lever to check its operation. The effort to move the lever must increase, starting from the center position of its stroke. The parking brake lever stroke adjustment is done by adjusting the cable and the position of the caliper lever (4) on the transmission. The access is possible through the rear of the machine by removing the lower protection of the fan (1), or if desired, by remove the engine crankcase protection. With the parking brake released, loosen the cable cap fixing nuts (2). Loosen the nut lock-pin (3) and adjust the position of the pads, on the brake disc, by turning clockwise the nut (3) in order to reduce the pads gap. NOTe: A gap must always exist between the disc and the pads. If no gap exists, the disc will overheat and the pads will worn prematurely. Install the lock-pin on nut (3). Position the cable cap and eliminate its gap, so that it remains in a position of approximately 90° regarding the caliper lever (4). Retighten the nuts (2). Check if the increase of effort necessary to apply the parking brake lever occurs after the half of its stroke.

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1. FAN LOWER PLASTIC PROTECTION

3 2

4 2

2. 3. 4. CABLE FIXING NUTS CALIPER DRIVE LEVER NUT CALIPER DRIVE LEVER