TH220B, TH330B, TH340B, TH350B, TH355B, TH360B, TH460B, TH560B and TH580B Telehandlers Braking System Caterpillar

Adjusting the Parking Brake Control Cable

Introduction

The parking brake control cable can be adjusted at the parking brake control lever which is located in the cab of the machine. The parking brake control cable can also be adjusted at the brake caliper which is located on the rear of the front axle.

Reference: See Systems Operation/Testing and Adjusting, "Location of Components (Braking)" for the location of the parking brake control lever and the brake caliper.

Adjustment Procedure

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Personal injury or death can result from machine movement. Place blocks in front of and behind the wheels to make sure the machine does not move while the parking brakes are disengaged.

1. Park the machine on level ground. Stop the engine.

2. Place wheel blocks in front of the rear wheels and behind the rear wheels.

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Illustration 1	g00905098
(1) Parking brake lever (2) Lever

3. Place the parking brake in the DISENGAGED position. Depress the release lever (2) and push the parking brake lever (1) downward.

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Illustration 2	g01084522

4. Adjust dimension (A) to 120 ± 4 mm (4.7244 ± 0.1575 inch).

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Illustration 3	g00795400
(3) Nut (4) Nut (5) Brake disc

5. Loosen nuts (3) and (4) on the brake caliper on the front axle.

6. Tighten nut (3) to 14.0 ± 0.6 N·m (120 ± 5 lb in).

7. Turn nut (3) counterclockwise for three quarters of a turn. Verify that brake disc (5) rotates freely.

8. Tighten nut (4) against nut (3). Tighten nut (4) to a torque of 68 ± 7 N·m (50 ± 6 lb ft).

9. When the hand lever for the parking brake is in the DISENGAGED position, the brake caliper that is located on the front axle should be fully released. The switch (parking brake) should also be disengaged when the hand lever for the parking brake is in the DISENGAGED position.

10. When the hand lever for the parking brake is in the DISENGAGED position, turn the switch for the ignition circuit to the ON position. The ignition circuit should remain off.

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Illustration 4	g00905111
(6) Adjusting knob

11. You can adjust the cable by the adjusting knob (6) on the hand lever. Check the operation of the parking brake. As you view the parking brake adjuster knob from the operator seat, turn the knob counterclockwise for one quarter of a turn.

12. Place the hand lever for the parking brake in the DISENGAGED position. Turn the adjusting knob (6) on the hand lever clockwise in increments of two turns in order to increase the brake force. Turn the adjusting knob on the hand lever counterclockwise in order to decrease the brake force.

13. When the parking brake adjustment is correct, engage the parking brake and remove the wheel blocks from all the wheels.

14. Check the area around the machine. Make sure that the machine is clear of personnel and clear of obstacles.

15. Refer to Service Manual, RENR5190, "Testing and Adjusting", "Parking Brake - Test" in order to test the parking brake.