8 INSPECTION AND MAINTENANCE
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
164
Pub. No. 291Y1-40720 Revision: 5
Radiator Fins - Check and Clean
(Radiator Spec)
Cleaning Method
1 Clean the radiator fins with
compressed air to remove dirt, sand
and engine oil.
2 If severely contaminated by oil,
spray detergent on the surface of
radiator fins to remove dust, sand,
and oil. Choose a detergent that
does not damage the radiator fin
material (copper or aluminum).
Fig. 8-106 Radiator Fin
3 Clean the radiator fins from the front
and back with high pressure steam.
Clean in order of front side (opposite
side of air flow of radiator) → back
side (same side as air flow of
radiator) → front side.
Fig. 8-107 Radiator Fin - Clean
• If you wash in reverse order, dust may
be pushed into the fins, and cause
damage.
• Avoid excessive high pressure steam
(more than 0.28 MPa {2.86 kgf/cm
2
}
[40.61 psi]) and pressurized water as
they will damage the fins.
4 Clean the surface of the radiator fins
until you can see the light from the
opposite side. If dust or dirt remains,
the performance of the radiator will
be decreased, leading to
overheating.
5 Recommended cleaning intervals:
clean at the time of engine oil
change.
When working by using compressed
air, wear protective glasses.
* Not wearing or wearing protective gears
incorrectly may result in serious injury.
Check the radiator fins for holes and
cracks.
* Otherwise, overheating, damage to the
devices, or performance degradation may
occur.
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