Doosan L6-60HZ-T4F Operation And Maintenance Manual page 39

Maintenance
Hoses
Each month it is recommended that the intake hoses from the air cleaner and all flexible hoses
used for water and fuel be inspected for the following:
1. All rubber hose joints and the screw type hose clamps must be tight and the hoses
showing no signs of wear, abrasion, or deterioration.
2. All flexible hoses must be free of wear, deterioration, and vibration abrasion. Routing
clamps must be properly mounted and secure.
Wiring Insulation
Daily check for loose or frayed wiring insulation or sleeving.
Fuel/Water Separator
Daily check for water in the fuel filter/water separator unit. Some engines have a translucent
bowl for visual inspection and others have a drain valve below the primary element.
Every six months or 500 hours, (less if fuel is of poor quality or contaminated) replace the bowl
element(s).
Air Vents
Daily clean the air vents of any obstructions or debris.
Air Cleaner
Proper maintenance of the air cleaner provides maximum protection against airborne dust.
Squeeze the rubber valve (Precleaner Dirt Dump) periodically to ensure that it is not clogged.
To service the air cleaners, proceed as follows:
1. Remove Filter element.
2. Inspect Air Cleaner housing for any condition that might cause a leak. Correct
as necessary.
3. Wipe inside of Air Cleaner housing with a clean, damp cloth to remove any dirt
accumulation to allow a better seal for Filter element gasket.
4. Install Filter element.
The Air Cleaner Assembly (housing) should be inspected every three months or 500 hours for
any leakage paths.
NOTE: Ensure the inlet is free from obstruction.
Ensure the air cleaner mounting bolts and clamps are tight and the air cleaner is mounted
securely. Check the air cleaner housing for dents or damage to the cleaner which could lead
to a leak.
Tires
Weekly check the condition of the tires and gauge the air pressure. Tires that have cuts,
cracks, or little tread depth should be repaired or replaced.
Operating & Maintenance Manual
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