Komatsu D85EX-18 Operation & Maintenance Manual page 318

MAINTENANCE PROCEDURE
REMARK
• If dirt is caught in the radiator fins, blow with compressed air to clean.
• In a cold circumstance, perform the cleaning by Fan Reverse Mode within less than 5 minutes.
If the fan reverse rotation is performed for a long time, DEF hose may freeze.
CLEAN WITH COMPRESSED AIR
• If compressed air, high-pressure water, or steam hits your body directly or dirt is scattered by the
compressed air, high-pressure water, or steam, there is a danger of personal injury. Always wear
protective equipment such as protective eyeglasses and dust mask.
• When performing cleaning, always stop the engine and check that the fan is not rotating. If you
touch the fan when it is rotating, it will cause serious personal injury or death.
NOTICE
When using compressed air for cleaning, blow it keeping some distance to avoid damaging the fins.
Damage on the fins can cause water leakage and overheating. In a dusty job site, check the fins every
day, regardless of the maintenance interval.
METHOD FOR CLEANING RADIATOR FIN AND AFTERCOOLER FIN
1.
Remove bolts (1) (8 pieces) of the radiator grille.
2.
Open radiator grille (2), and lock it.
3.
Blow off mud, dirt, leaves, etc. in the radiator fins with com-
pressed air.
You may use steam or water instead of compressed air.
4.
Check the rubber hoses.
If they are cracked or fragile, replace them.
5.
Check the hose clamps for looseness.
METHOD FOR CLEANING OIL COOLER FIN AND AIR CONDITIONER CONDENS-
ER NET
1.
Open the engine side cover on the right and left sides of the machine.
2.
Use compressed air to remove the mud, dirt, and leaves
clogging to oil cooler fins (1) and air conditioner condenser
net (2).
You may use steam or water instead of compressed air.
3.
Check the rubber hoses.
If they are cracked or fragile, replace them.
4.
Check the hose clamps for looseness.
4-30
k k
WARNING
MAINTENANCE