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MAINTENANCE PROCEDURE
When mounting end bit (4), fit its top (5) to stopper (6)
tightly, and then tighten the bolt.
Tightening torque of mounting nut:
•
SIGMADOZER: 628±79 Nm {64±8 kgm}
•
Semi-U dozer: 628±79 Nm {64±8 kgm}
•
Straight tilt dozer: 628±79 Nm {64±8 kgm}
12. After operating several hours, retighten the mounting nut.
METHOD FOR CHECKING AND CLEANING RADIATOR FINS, OIL COOLER FINS,
AFTERCOOLER FINS, AND AIR CONDITIONER CONDENSER NET
If there is any mud or dirt stuck to the radiator or oil cooler, clean them.
Check the rubber hoses. If they are cracked or fragile, replace them. Also, check the hose clamp for looseness.
METHOD FOR CLEANING FIN BY ROTATING HYDRAULIC DRIVE FAN IN RE-
VERSE
NOTICE
When the hydraulic drive fan rotates in reverse, take extreme care of scattering of dust.
When stopping the engine during the Fan Reverse Mode, first run the engine at low idle, then stop it.
The dust and dirt stuck to the radiator and cooler can be blown out by rotating the cooling fan in the reverse
direction.
1.
Turn starting switch (1) to OFF position and stop the en-
gine.
4-28
MAINTENANCE
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