Ingersoll-Rand DOOSAN HP375WCU, Operation & Maintenance Manual, Page: 61 / 73

Maintenance Operation & Maintenance Manual
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12. Allow the engine to cool. Check the coolant level in the radiator again, top off
the radiator with a 50/50 mixture of ethylene glycol and water. Replace the
radiator cap.
13. The overflow bottle should be 1/4 to 1/2 full. If not, fill to this level with a 50/50
mixture of ethylene glycol and water.
AIR FILTER ELEMENTS
The air filter element should be replaced regularly (refer to the MAINTENANCE CHART) or
when the restriction indicator shows red, whichever comes first. The aircleaner precleaner
dumps should be cleaned as indicated in the MAINTENANCE CHART (more frequently in
dusty operating conditions).
Removal
CAUTION
!
Never remove and replace element(s) when the machine is running.
Clean the exterior of the filter housing and remove the filter element by releasing the nut.
Reassembly
Assemble the new element into the filter housing ensuring that the seal seats properly. Secure
element by tightening nut. Before restarting the machine, check that all clamps are tight.
VENTILATION
Always check that the air inlets and outlets are clear of debris etc.
COOLING FAN DRIVE
Periodically check that the fan mounting bolts in the fan hub have not loosened. If, for any
reason, it becomes necessary to remove the fan or re-tighten the fan mounting bolts, apply a
good grade of commercially available thread locking compound to the bolt threads and tighten
to the torque value shown in the TORQUE SETTING TABLE later in this section. Fan belt(s)
should be check regularly for wear and correct tensioning.
FUEL SYSTEM
The fuel tank should be filled daily or every eight hours. To minimize condensation in the fuel
tank(s), it is advisable to top up after the machine is shut down or at the end of each working
day. Drain any sediment or condensate that may have accumulated in the tank(s). Refer to
MAINTENANCE CHART.