Clean And Check Radiator Fins, Oil Cooler Fins, Aftercooler Fins - Komatsu D155A-6 Operation & Maintenance Manual

MAINTENANCE MAINTENANCE
2) When installing end bit (4), put top face (5) of the end bit in
tight contact with stopper (6), then tighten the bolt.
6. After several hours of running, retourque the nuts.

CLEAN AND CHECK RADIATOR FINS, OIL COOLER FINS, AFTERCOOLER FINS

Carry out this procedure if there is any mud or dirt stuck to the radiator or oil cooler.
REMARK
Check the hydraulic cooler hoses. If any hose is cracked or hardened by age, replace with a new hose. Also check
and tighten all loose hose clamps.
CLEANING BY ROTATING COOLING FAN IN REVERSE DIRECTION
NOTICE
When rotating the cooling fan in the reverse direction, be extremely careful
of flying dust.
When stopping the engine when the cooling fan is rotating in the reverse
direction, first run the engine at low idling, 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 the "OFF" position and stop the engine.
2. Turn starting switch (1) to the "ON" position.
3. Set the fan reverse mode on the user menu.
For details of the method of setting the fan reverse mode, see
"HYDRAULIC DRIVE FAN REVERSE MODE (PAGE 3-49)".
SERVICE PROCEDURE SERVICE PROCEDURE
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