Komatsu HM400-5, Руководство по эксплуатации и техническому обслуживанию

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6.
Remove cap nut (1).
7.
Depress the brake pedal and keep it.
8.
Push in shaft (2) of gauge until it contacts piston (3).
Portion (a): Shows the default value of thickness of brake
disc.
Portion (b): Shows the wear limit of thickness of brake
disc.
If it has reached the wear limit, ask your Komatsu distribu-
tor for inspection and maintenance.
9.
Install cap nut (1) removed in step 6.
Tightening torque: 29.4 to 39.2 Nm {3.0 to 4.0 kgm}
REMARK
• With new machines, the positions are adjusted so that
groove underline (a) of shaft (2) matches to upper sur-
face (c) of the guide. So do not loosen locknut (5) ex-
cept when replacing the disc.
• Perform the operation with 2 workers. One worker de-
presses the brake pedal and the other pushes in the
rod.
• If shaft (2) is pushed in when the engine is running,
shaft (2) will be pushed back by the brake cooling oil
pressure. So always perform this operation with the
engine stopped.
METHOD FOR CHECKING FOR LOOSENESS OF ENGINE INTAKE PIPE CLAMP
When getting on or off the machine with carrying a tool etc.,
place it once in part (A) to ensure your safety.
1.
Check for looseness in the air intake piping clamps between the air cleaner, turbocharger, aftercooler, and
engine.
2.
Retighten any loose clamps.
Tightening torque of clamp (1): 8.8±0.5 Nm {0.9±0.05 kgm}
Tightening torque of clamp (2): 9.8±0.5 Nm {1.0±0.05 kgm}
MAINTENANCE PROCEDURE MAINTENANCE
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