Lincoln Electric POWER-ARC IM871-A Operator's Manual page 36

D-4
GENERATOR/WELDER MAINTENANCE
STORAGE: Store the POWER-ARC 5500 in clean,
dry, protected areas.
CLEANING: Blow out the generator and controls
periodically with low pressure air. Do this at least
once a week in particularly dirty areas.
BRUSH R R EMOVAL A A ND R R EPLACEMENT: See
Figure D.5. It's normal for the brushes and slip
rings to wear and darken slightly. Inspect the
brushes when a general overhaul is necessary.
Remove the brushes and clean the slip rings with
fine grit emery paper.
CAUTION
Do n n ot a a ttempt t t o p p olish s s lip r r ings w w hile e e ngine
is r r unning.
To reinstall the brushes, press them upward and
slide a cable tie or wooden stick through the brush
holder tabs. Install the brush holder into the bear-
ing end bracket and secure with the screws previ-
ously removed. Remove the cable tie or wooden
stick and the brushes will seat onto the slip rings.
FIGURE D.5. – BRUSH REMOVAL AND REPLACEMENT
MAINTENANCE
4
2
3
1
1. GENERATOR END BRACKET
2. BRUSH HOLDER ASSEMBLY
3. COVER
4. SCREWS (2)
5. BRUSHES
6. CABLE TIE
POWER-ARC 5500
RECEPTACLES: Keep the electrical receptacles in
good condition. Remove any dirt, oil, or other
debris from their surfaces and holes.
CABLE C C ONNECTIONS: Check the welding cable
connections at the weld output terminals often. Be
sure that the connections are always tight.
NOTE: Lincoln offers a rotor removal kit for any ser-
vice which requires removal of the rotor from the
engine. See the ACCESSORIES section for further
details.
Removal of engine/generator assembly from the
cradle can be achieved as follows:
• Remove the two 5/16-18 hex head cap screws
from the engine block via the access hole located
in the cradle cross support channel. Leave all
other engine mountings intact.
• Remove the two hex nuts from the isolator thread-
ed posts at the stator support bracket located
opposite the engine. Leave all other stator mount-
ings intact.
• With a jib hoist or crane, lift the unit upward and
remove loose cradle from engine/generator
assembly.
6
5
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