CHECK AND REPLACE ALTERNATOR DRIVE BELT TENSION AND REPLACING
AL
TERNATOR BELT
• Special tools are required for checking the tension of the alternator drive belt and replacing it. Ask your Ko-
matsu distributor to perform this work.
• Since the auto-tensioner is installed, tension adjustment is not required.
Check the alternator drive belt.
If alternator drive belt shows the following conditions, it must be
replaced. Ask your Komatsu distributor to replace it.
• When vertical flaw (2) that crosses horizontal flaw (1) is
found.
• When part of the belt has tears (3).
REMARK
When only horizontal flaw (4) is found, replacement is not re-
quired.
METHOD FOR CHECKING FOR LOOSE ROPS MOUNT BOLTS
Check that the bolts for looseness or damage.
Rear bolts (1) (2 pieces): Located under the tray at the rear of
the operator's seat.
Front bolts (2) (2 pieces): Located under the floor plate.
• When any bolt is loose
Tighten the bolt.
Tightening torque: 785
to 980 Nm {80 to 100 kgm, 579 to
723 lbft}
• When any bolt is damaged
Replace the bolt with a Komatsu genuine part.
MAINTENANCE PROCEDURE MAINTENANCE
4-64
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