Lincoln Electric BULLDOG SVM208-A Service Manual page 42

D-6
GENERATOR/WELDER MAINTENANCE
STORAGE: Store the Bulldog® 140 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 REMOVAL AND REPLACEMENT: See
Figure D.6. 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 not attempt to polish slip rings while engine is
running.
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To reinstall the brushes (Item 5), press them upward
and slide a cable tie (Item 6) through the brush hold-
er tabs as shown in figure D.6. Install the brush hold-
er (Item 1) into the bearing end bracket (Item 3) and
secure with the screws (Item 4) previously removed.
Remove the cable tie and the brushes will seat onto
the slip rings and replace bearing bracket end cover
(Item 2).
FIGURE D.6. – BRUSH REMOVAL AND REPLACEMENT
MAINTENANCE
3
1
2
4
1. BRUSH, BRUSH HOLDER ASSEMBLY
2. BEARING BRACKET END COVER
3. ENGINE END BRACKET
4. (2) SCREWS
5. (2) BRUSHES
6. CABLE TIE
BULLDOG® 140
RECEPTACLES: Keep the electrical receptacles in
good condition. Remove any dirt, oil, or other debris
from their surfaces and holes.
CABLE CONNECTIONS: 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 cra-
dle 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 oppo-
site the engine. Leave all other stator mountings
intact.
• With a jib hoist or crane, lift the unit upward and
remove loose cradle from engine/generator assem-
bly.
6
5
D-6