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TM 55-4920-416-13
Section V
NAVAER 17-15C-539
When parts are thoroughly cleaned, rinse them in clean solvent
5-33. MOTOR PUMP ASSEMBLY. The pump is lubricated by
and dry.
oil from the reservoir and the electric motor has sealed
b.  Clean armature by wiping with a clean cloth
bearings; therefore, no lubrication procedures are required for
moistened with cleaning solvent.
the test set.
c.  Blow dust and foreign matter from inside field
assembly with filtered dry, compressed air, then wipe inside of
5-34. REASSEMBLY. (See figure 9-8.) Reassembly is the
field assembly with a cloth moistened with cleaning solvent.
reverse of disassembly.
d.  Clean brushes with a coarse, dry cloth if they are to
be used in reassembly.
CAUTION
5-31.  INSPECTION, REPAIR AND REPLACEMENT.
(See
Care should be exercised when the noise
Table 5-1 below and Troubleshooting Chart, Table 6-1.)
suppressor and receptacle assembly (31)
is screwed back onto the unit to tuck the
5-32. LUBRICATION.
wire connected to it underneath the field
assembly.
If this precaution is not
observed, the wire may be frayed or
broken by the armature as It turns.
TABLE 5-1
INSPECTION, REPAIR AND REPLACEMENT
Part
Inspect For
Repair & Replacement
Brush.
Brush chipped or cracked.
Replace.
Brush length less than 7/32-inch or
brush spring not exerting enough
pressure to give proper brush
contact.
Armature Assembly.
Damaged, or burned insulation.
Replace.
Commutator End Bearing.
Rough action or dry.
Replace.
Drive End Assembly.
Rough action or dry.
Replace.
Field Assembly.
Rough action or dry.
Replace
Commutator End Bracket.
Cracked or damaged
Replace.
Shaft End Bracket.
Cracked or damaged.
Replace.
26

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