Komatsu D475A-5E0 Operation & Maintenance Manual page 283

SERVICE PROCEDURE
CLEAN AFTERCOOLER FINS
1. Open the engine side cover on the right side of the machine.
2. Blow off dirt, dust and dry leaf shreds that clog the aftercooler
fins, with compressed air. Steam or water may well be used for
this purpose instead of compressed air.
However, when
(high-pressure machine wash) of the heat exchange
equipment (aftercooler), maintain sufficient distance from the
machine when performing the operation. If steam cleaning
(high-pressure machine wash) is performed at close range,
there is danger that the internal fins of the heat exchange
equipment may be deformed, and this will cause early clogging
and breakage.
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.
4 - 40
performing powerful steam cleaning
MAINTENANCE