Generator Lubrication and Maintenance
BRUSH CONTACT
SPRING
MINIMUM
AREA
TENSION
LENGTH
Inch
mm
Ounce
Gram
Inch
mm
5/8 x 5/16
16 x 8
14
400
9/16
14
7/8 x 5/16
22 x 8
20
550
9/16
14
11/8 x 1/2
28 x 13
40
1100
3/4
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a. If spring tension is less than shown in the chart: Push
the spring forward one notch in the retainer clip. Check
the spring tension.
b. If the spring tension is greater than shown in the
chart: Release the spring by one notch. Check the
spring tension.
c. If the spring tension is less than shown in the chart
and the spring is in the forward notch, remove the brush
and check the brush length.
Removing and Installing Brushes - SRCR Only
1. Release the spring from the retainer.
3. Remove and inspect the brush. If the brush length is
less than the minimum shown or if badly pitted, install a
new brush.
2. Disconnect the lead wire of the brush.
4. Connect the lead wire of the brush.
5. Place the brush in the brush holder. Be sure the
brush moves freely in the holder.
6. Cut a strip of "00" sandpaper the width of the brush.
Never use emery cloth for this purpose. Emery contains
small metallic particles which can damage the copper
rings.
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