Komatsu WA250PT-5H, Operation & Maintenance Manual, Page: 231 / 255

MAINTENANCE
Service procedure
Every 2000 hours service
4-57
Check brake disc wear 0.
WARNING
When checking the brake disc wear, apply the parking brake and secure the front and rear frames with
the safety bar.
Make sure that the brake oil temperature is less than 60°C (140°F) before checking the brake wear.
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 proce-
dure to check all 4 places.
Prepare an inspection gauge.
1. Remove check plug (1).
2. With the brake pedal depressed, insert inspection gauge (2)
into the tooth portion of piston (3) and plate (4).
3. If the inspection gauge can be inserted into the tooth por-
tion, the disc has reached the wear limit.
Please ask your Komatsu distributor to carry out the
replacement.
4. After checking, install check plug (1).
Tightening torque: 127 to 177 N·m (13 to 18 kgf·m, 94.0 to
130.2 lbft)
Clean and check turbocharger 0.
If there is carbon or oil sludge stuck to the blower impeller, it will lower the performance of the turbocharger or
cause it to break, so ask your Komatsu distributor to carry out the cleaning.
Check accumulator gas pressure 0.
When carrying out the EVERY 2000 HOURS SERVICE or EVERY YEAR SERVICE or when making periodic
replacement of the critical safety parts, please ask your Komatsu distributor to check the accumulator gas pres-
sure.
Check vibration damper 0.
Check that there are no cracks or peeling in the outside surface of the rubber.
If any cracks or peeling are found, contact your Komatsu distributor to have the parts replaced.