OPERATIONAL PERFORMANCE TEST / Wheel Loader Test SERVICE BRAKE WEAR AMOUNT Summary: The extent of wear of the brake disc at the service brake of the axle is judged by the wear gauge. Preparation: 1. Clean inspection plug (1) of the axle. Loosen in- spection plug (1). 2. Inspection plug (1) of the rear axle is located be- low the center line of the differential. Therefore loosen inspection plug (1) after draining axle oil. Measurement: 1. Operate the service brake by depressing the brake pedal. 2. Insert wear gauge (2) into the inspection port until it contacts brake disc (6) between brake ring (3) and brake ring (4). Evaluation: 1.
When wear gauge (2) enters between brake rings (3, 4), and the model scale of wear gauge (2) and housing surface (5) are aligned, the wear amount of brake disc (6) is not reached the maximum al- lowable limit of use. When wear gauge (2) does not enter between brake rings (3, 4), and the model scale is sticking above housing surface (5), brake disc (6) is worn in excess of the maximum allowable limit. 2. In the method above, in case the maximum al- lowable limit of use has not reached, or in case the service brake part has been assembled, refer to Performance Standard Table in Group T4-2.
Distance between housing surface (5) and brake disc (6) 1 T4GB-04-04-004 2 Inspection Port T4GB-04-04-005 T4GD-04-04-001 T4-4-3 2 L 6 3 4 4 Model L ZW180 54 mm (2.1 in)