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SAFETY PRECAUTIONS
• Have qualified personnel do all maintenance and
troubleshooting work.
• Turn the engine off before working inside the
machine.
• Remove covers or guards only when necessary to
perform maintenance and replace them when the
maintenance requiring their removal is complete.
• If covers or guards are missing from the machine, get
replacements from a Lincoln Distributor.
Read the Safety Precautions in the front of this manu-
al and in the instruction manual for the diesel engine
used with your machine before working on the
Commander 500.
Keep all equipment safety guards, covers, and devices
in position and in good repair. Keep your hands, hair,
clothing, and tools away from the fans, and all other
moving parts when starting, operating, or repairing this
machine.
ROUTINE AND PERIODIC
MAINTENANCE
ENGINE MAINTENANCE
DAILY
a. Check the crankcase oil level.
b. Refill the fuel tank to minimize moisture condensa-
tion in the tank.
c. Open the water drain valve located on the bottom
of the water separator element one or two turns
and allow to drain into a container suitable for
diesel fuel for two to three seconds. Repeat the
above drainage procedure until diesel fuel is
detected in the container.
WEEKLY
Blow out the machine with low pressure air periodical-
ly. In particularly dirty locations, this may be required
once a week.
To prevent the engine from accidentally starting, dis-
connect the negative battery cable before servicing the
engine.
See Table D.1 for a summary of maintenance intervals
for the items listed below. Follow either the hourly or
the calendar intervals, whichever come first. More fre-
quent service may be required, depending on your spe-
cific application and operating conditions.
OIL: Check the oil level after every 8 hours of operation
or daily. BE SURE TO MAINTAIN THE OIL LEVEL.
Change the oil the first time between 25 and 50 hours
of operation. Then, under normal operating conditions,
change the oil as specified in Table D.1. If the engine
is operated under heavy load or in high ambient tem-
peratures, change the oil more frequently.
CHANGE THE OIL: Change the oil, while the engine
is still warm, as follows:
1 . Drain the oil from the drain plug located on the
engine bottom, as shown in Figure D.1. Examine
the washer and replace it if it appears damaged.
2. Replace the plug and washer and tighten firmly.
3. Remove the oil fill cap and add oil until the level
reaches the “MAX” mark on the dipstick. See
Figure D.1. Use high quality oil viscosity grade
10W40. Consult the engine manual for oil specifi-
cations for various ambient temperatures. Always
check the level with the dipstick before adding
more oil.
4. Reinstall the oil fill cap and the dipstick.
D-2 D-2
MAINTENANCE
COMMANDER 500
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WARNING
CAUTION