Lincoln Electric SVM194-A service manual Replacement Procedure

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F-67	TROUBLESHOOTING AND REPAIR		F-67
	ALTERNATOR ROTOR REMOVAL
	AND REPLACEMENT PROCEDURE (continued)
Replacement		d. The exciter brush spring must lie flat on
9. Carefully mount the rotor onto the generator		the corner of the brush and not touch
shaft.	Install a new sleeve collar (part num-	either side of the retainer.
ber T14337), washer, and rotor locking nut.		e. With the brushes in place, insert one end
NOTE: Be careful not to damage or deform		of a minimum 24" long piece of 180 grit
		sandpaper between the slip rings and
	the new sleeve collar. Carefully tap	brushes (abrasive against brushes). With
	the new sleeve collar into position.	slight additional finger pressure on top of
	The rotor locking nut should be	brushes, pull the paper around the cir-
	torqued to 175 ft.-lbs.	cumference of the rings in the direction of
After the rotor locking nut is properly		rotation only. Repeat this procedure until
torqued, bend the washer down over the		the entire face of the brush is contoured
locking nut.		to the radius of the slip ring.
Check	rotor air gap. .017" minimum is	f. Check the brushes to be certain that there
allowed.		is spring tension holding them firmly
10. Mount the brush holder assembly to the sta-		against the slip rings.
tor frame using two bolts, washers, and nuts.		11. Install the alternator cover and wrap-around.
Installing and Seating Exciter Slip Ring Brushes		12. Connect the negative battery cable.
a. Make sure the slip rings are clean and
free from oil and grease.

b. Spacing between the brush holder and slip rings must be .050" to .090". Adjust as required.

c. Before placing the exciter brushes in their holders, twist the brush pigtail at its entrance to the brush until the strands are tightly packed and no part of the pigtail protrudes beyond the brush surface in the pigtail slot. When the brush is placed in the holder, clear the pigtail from the side of the holder to allow free radial move- ment of the brush.

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CLASSIC® 300D & 300G