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Page Title:
Brush Carrying Plate Assembly and Brushes |
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 that are soldered to the field
repair and rebuild standards
coils require replacement,
move themas shown in figure 26.
arbor if worn
Install anew set of brushes by
beyond limits.
referring to figure 26 and re-
versing disassembly procedure.
If the intermediate
(3)
type bearing is removed, check
Field Coils and Frame.
f
the diameter ofthebearing bore
-"
in the intermediate bearing
(1) Check field coils for insulation
tainer against limits specified
breakdownwithan ohmmeter. At-
in the repair and rebuild stand-
tach one probe of the ohmmeter
ards (par. 40) and replace the
lead and the other
intermediate
bearing
retainer
probetothe terminal post. The
if worn beyond limits.
minimum reading should not be
less than one
If the
Brush Carrying Plate Assembly and
field coilsare damaged, remove
Brushes.
shown in figures 27 and
28. Install a new field coil
(1) Inspect the brush carrying plate
referring to figures
for any visible damage. Replace
if damaged.
Replace any brush
assembly procedures.
springs that were marked for re-
placement during disassembly.
(2) Inspect field frame for cracks
and
Inspect if cracked.
(2) Inspect the brushes for chips,
cracks, loose terminal leads,
Armature.
and grease spots.
Check the
length of the brushes against
(1)
Inspect the commutator contact
the limits specified in the
surface of the armature. A sat-
pair and rebuild standards (par.
isfactory conditions indicat-
40). Replace
if worn
In the
ed
beyond these limits.
highly burnished,
If the
dark-copper color.
event that any of the brushes
Remove eight
pole
piece
screws
and
D - Remove lead insulation.
gaskets.
Remove
insulation
washer.
Remove four pole pieces.
F - Remove metal washer.
Remove field coils.
c
-
Removing or installing field coils and associated parts.
20
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