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D-3
MAINTENANCE
D-3
COMMANDER 500
4. Slide the new element onto the grommet post on the
bottom of the filter header until the element no longer
easily moves up into the filter header. Now rotate the
element (may take almost 1 full turn) with a slight
upward pressure until the element begins to further
engage the header. With the proper orientation now
established apply additional pressure to seat the ele-
ment in the filter header. You should feel the element
“pop” into place when properly seated.
Note: The element will only go on one way. Never use
excessive force when mounting the element to the
header.
5. Slide the quick change ring up over the element and
rotate counter clockwise until an audible click or pop
is heard. If you do not hear the click you have not rotat-
ed the ring far enough and the element is not in the
locked position. Another indication that the ring is in
the locked position is that one set (it doesn’t matter
which one) of arrows located on the outside of the ring
should be located directly under the air vent valve.
6. Open the fuel shutoff valve (lever in line with the hose).
7. Open the air vent valve on the front of the filter head-
er until fuel emerges free of air bubbles and then close
the air vent valve.
Note : Consult your engine operation manual for infor-
mation on air bleeding the entire fuel system.
SECONDARY FUEL FILTER
The Secondary Fuel Filter is a spin on cartridge type
mount directly to the engine. Consult your engine opera-
tion manual for complete information on service intervals
and element changing procedures.
COOLING SYSTEM
The cooling system of the Deutz engine needs to be
checked and cleaned periodically. Consult the engine
owners manual for the proper frequency and procedure.
COOLING BLOWER BELT
The following procedure should be followed to replace the
cooling blower belt:
1. Allow the machine to cool.
2.
Unfasten and slide the battery holder out from the welder.
3. Disconnect the negative battery cable.
4. Remove engine case side.
5. Loosen air cleaner hose clamp and detach hose.
6.
Remove the engine end panel with air box and air clean-
er attached for access to the engine.
7. Loosen the alternator mounting bolts and rotate the
alternator towards the engine.
8.
Remove the old cooling blower belt and install a new one.
9. Adjust the cold belt tension to 63-73 lbs. midway
between any two pulleys.
10. Reinstall the air cleaner hose, engine case side and
end panel. Reattach the negative battery cable. Slide
in and refasten the battery holder.
11. Check the cooling blower belt tension after 100 hours
of operation. (Follow steps 1,2,3,4,5,6,9 & 10)
BATTERY HANDLING
GASES FROM BATTERY can explode.
• Keep sparks, flame and cigarettes away from bat-
tery.
To prevent EXPLOSION when:
• INSTALLING A NEW BATTERY - disconnect nega-
tive cable from old battery first and connect to new
battery last.
• CONNECTING A BATTERY CHARGER - Remove bat-
tery from welder by disconnecting negative cable
first, then positive cable and battery clamp. When
reinstalling, connect negative cable last. Keep well
ventilated.
• USING A BOOSTER - connect positive lead to bat-
tery first then connect negative lead to engine foot.
BATTERY ACID CAN BURN EYES AND SKIN.
• Wear gloves and eye protection and be careful
when working near battery. Follow instructions
printed on battery.
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PREVENTING ELECTRICAL DAMAGE
1. When replacing, jumping, or otherwise connecting the
battery to the battery cables, the proper polarity must be
observed. Failure to observe the proper polarity could
result in damage to the charging circuit. The positive (+)
battery cable has a red terminal cover.
2. If the battery requires charging from an external charg-
er, disconnect the negative battery cable first and then the
positive battery cable before attaching the charger leads.
Failure to do so can result in damage to the internal
charger components. When reconnecting the cables,
connect the positive cable first and the negative cable
last.
PREVENTING BATTERY DISCHARGE
If you have an ignition switch, turn it off when engine is
not running.
PREVENTING BATTERY BUCKLING
Tighten nuts on battery clamp until snug.
WARNING