Doosan 7/20, Руководство по эксплуатации и обслуживанию

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32 MAINTENANCE
7/20, P65
5. After adding oil, wait more than 5 minutes and check the oil level
again. It takes some time for the oil to drain down to the oil pan.
Changing engine oil
1. Remove the drain plug at the bottom of the engine, and drain all the
old oil. Drain oil will drain easier when the oil is warm.
2. Add new engine oil up to the upper limit of the oil level gauge.
ENGINE LUBRICATING OIL SPECIFICATION
Refer to the MAINTENANCE SHEDULE .
ENGINE OIL FILTER ELEMENT
The engine oil filter element should be changed at the engine
manufacturer’s recommended intervals. Refer to the
MAINTENANCE
SHEDULE .
Replacing the oil filter cartridge
1. Replace the oil filter cartridge after the initial 50 hours of operation
and every 200 hours thereafter.
2. Remove the old oil filter cartridge with a filter wrench.
3. Apply a film of oil to the gasket for the new cartridge.
4. Screw in the cartridge by hand. When the gasket contacts the seal
surface, tighten the cartridge enough by hand. Because, if you
tighten the cartridge with a wrench, it will be tightened too much.
5. After the new cartridge has been replaced, the engine oil level
normally decreases a little. Thus, run the engine for a while and
check for oil leaks through the seal before checking the engine oil
level. Add oil if necessary.
COMPRESSOR LUBRICATING OIL
Refer to the MAINTENANCE SHEDULE in this section for service
intervals.
Completely drain the receiver/separator system including the piping
and oil cooler by removing the drain plug(s) and collecting the used oil
in a suitable container.
Replace the drain plug(s) ensuring that each one is secure.
COMPRESSOR OIL FILTER ELEMENT
Refer to the MAINTENANCE SHEDULE in this section for service
intervals.
RUNNING GEAR WHEEL BEARINGS
Wheel bearings should be packed with grease every 6 months. The
type of grease used should conform to specification
MIL-G-10924 .
1. Oil filler plug
2. Oil level gauge
A . Engine oil level within this range is proper.
CAUTION: To avaid personal injury ensure that the engine is
stopped before changing the oil filter cartridge.
Allow the engine to cool down sufficiantly, oil can be hot and cause
burns.
1. Oil filter cartridge (Remove with a filter wrench and hand tighten).
NOTE: If the machine has been operating under adverse conditions,
or has suffered long shutdown periods, then more frequent service
intervals will be required.
WARNING: DO NOT , under any circumstances, remove any
drain plugs or the oil filler plug from the compressor lubricating
and cooling system without first making sure that the machine
is stopped and the system has been completely relieved of all air
pressure
(refer to STOPPING THE UNIT in the OPERATING
INSTRUCTIONS section of this manual).
NOTE: If the oil is drained immediately after the machine has been
running, then most of the sediment will be in suspension and will
therefore drain more readily.
CAUTION: Some oil mixtures are incompatible and result in the
formation of varnishes, shellacs or lacquers which may be insoluble.
NOTE: Always specify PRO-TEC oil for use at all ambient
temperatures above -23°C.