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TM 10-3930-653-14&P
(5)
Extract brushes and remove brush holder assembly.
(6)
Remove pinion stopper from armature shaft end To
remove stopper, first, push it to clutch side. After
removing stopper together with overrun clutch, withdraw
overrunning clutch assembly from armature shaft.
Fig. 4-157. Removing Over-Running Clutch Assembly
4-7-3-5. CLEANING AND INSPECTION
WARNING
Dry cleaning solvent P.D.-680 is toxic
and flammable. Wear protective
goggles and gloves and use only in a
well ventilated area. Avoid contact
with skin, eyes, and clothes and don’t
breathe vapors. Do not use near
open flame or excessive heat. If you
become dizzy while cleaning with
solvent, get fresh air immediately and
get medical aid. If contact with skin
or clothing is made, flush with water.
If contact with eyes is made, wash
your eyes with water and get medical
aid immediately.
WARNING
Compressed air used for cleaning
purposes riot exceed 30 PSI. Use
only with effective chip guarding and
personal
protective
equipment
(goggles/shield, gloves, etc.).
Clean all disassembled parts, but do not use grease
dissolving solvents for cleaning overrunning clutch,
armature assembly, magnetic switch assembly and field
coils since such a solvent would dissolve grease packed
in the clutch mechanism and would damage coils or
other insulators
Check all parts for excessive damage or wear and
replace if necessary.
(1)
TERMINAL
Check terminal for damage and wear and replace if
necessary
(2)
FIELD COIL
Check field coil for insulation. If insulation of coil is
damaged or worn, it should be replaced.
(1)
Testing field coil for continuity:
Connect probe of a circuit tester or an ohmmeter to
field coil positive terminal and positive brush holder.
If tester shows no continuity, field circuit or coil is
open.
Fig. 4-158. Continuity Test of Field Coil
(2)
Testing field coil for ground:
Place one probe of circuit tester onto yoke and the
other onto field coil lead (positive terminal).
If very little resistance is read, field coil is grounded.
4-96
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