Komatsu Galeo HD405-7R, Operation & Maintenance Manual

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MAINTENANCE
SERVICE PROCEDURE
CLEAN, CHECK RADIATOR FINS AND AFTER COOLER FINS
WARNING
If compressed air scattered around dust and debris, there is danger of injury. Always wear protective equipment such as
protective glasses and mask.
If radiator fins (1) or aftercooler fins (2) become clogged or bent, it
will cause overheating of the engine, so always clean or carry out
inspection, and ask your Komatsu distributor to take the necessary
action.
Cleaning can be carried out by using jets of air, steam, or water,
but be careful not to let the nozzle contact the fin.
When using compressed air or steam, keep the nozzle at a right
angle to the radiator and after cooler.
Examine the rubber hose, and if any cracks or brittle places are
found, replace the hose. In addition, check also for loose hose
clamps.
NOTICE
If steam jet nozzle (3) is brought too close to fins (4), the fins can be
damaged, so keep a good distance in between when cleaning.
Use the following values as a benchmark.
Jet pressure: Lower than 9.8 MPa (100 kg/cm
2
)
Nozzle diameter: Less than 2 mm (0.08 in)
Distance between nozzle and fin (A): More than 100 mm (4 in)
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