5B-30 - MID-SECTION 90-830234R3 DECEMBER 1997
Motor Disassembly
1. Remove screws and clamp.
a
a
a
a
b
b
b
c
d
e
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a - Screws (4)
b - Screws (3)
c - Clamp
d - Grommet
e - Gasket
2. Lift end cap from motor. Do not drop armature.
a
b
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a - End Cap
b - Armature
Armature Tests
TEST FOR SHORTS
Check armature on a Growler (follow Growler man-
ufacturer’s test instructions). Indication of a short re-
quires replacement of armature.
TEST FOR GROUND
Use an Ohmmeter (R x 1 scale). Place one lead on
Ohmmeter on armature shaft and other lead on com-
mutator, as shown. If continuity is indicated, armature
is grounded and must be replaced.
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CHECKING AND CLEANING COMMUTATOR
If commutator is worn it can be turned down on an ar-
mature conditioner tool or on a lathe.
Clean commutator with “00” sandpaper.
a
a - Commutator
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