Table 5-1. INSPECTION, REPAIR AND REPLACEMENT

TM 55-4920-416-13

Section V

NAVAER 17-15C-539

Paragraphs 5-31 to 5-34

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.