4.8 Service procedure Maintenance Every 2000 hours service Check brake disc wear z When checking the brake disc wear, apply the parking brake and secure the front and rear frames with the safety bar. z Make sure that the brake oil temperature is less than 60°C (140°F) before checking the brake wear. z If the disc is near the wear limit, carry out inspection at shorter intervals, regardless of the specified inspection interval. When checking the brake disc for wear, there are 4 places (front axle and rear axle, left and right), so use the same procedure to check all 4 places. 1. Prepare an inspection gauge. 2. Remove check plug (1). 3.
With the brake pedal depressed, insert inspection gauge (2) into the tooth portion of piston (3) and plate (4). 4. If the inspection gauge can be inserted into the tooth portion, the disc has reached the wear limit. Please ask your Komatsu distributor to carry out the replace- ment. 1 5. After checking, install check plug (1). Tightening torque: 127 to 177 N·m (13 to 18 kgf·m, 94.0 to 130.2 lbft) 1 GK020037 4 3 2 GK020038 WA150-5H – VEAM934100 4-65 WARNING WARNING