TM 5-3431-207-15
(24) Remove coil set (50) by removing screws
(3) Remove blower (12) by removing nut (18')
(51) and pole pieces (52).
and washer (14).
(25) Remove shield (56).
(4) Remove dust cap (15) by removing
screws (16).
(26) Remove dust cap (54) by removing
screws (55).
(6) Remove pipe plug (17).
(27) Remove pipe plug (56).
(6) Remove gasket (18).
(28) Remove brush (67) in accordance with
(7) Remove bracket (19) by removing screws
(20).
(29) Remove brushholder (58) and washer
(8) Remove socket (21) by removing screw
(60) and screw (59).
(22) and lockwasher (23).
(30) Remove bracket (61).
(9) Remove brushholder assembly (24).
(31) Remove bearing (62).
(10) Remove brush (25) in accordance with
(32) Remove gasket (63).
(11) Remove nameplate (26') by removing
(33) Remove dust cap (64).
screws (27).
(12) Remove leadblock (28) by removing
b. Cleaning. Clean studs, nuts, metal washers,
screws (29).
spacers drive assembly and frame in solvent and dry
thoroughly. Wipe off blower with solvent-dampened
cloth and dry with clean lint-free cloth. Clean armature
(14) Remove pole pieces (34 and 35).
with very fine sandpaper and blow off thoroughly.
(15) Remove coils (31, 32 and 33).
c. Inspection. Inspect brushes, brush holder, coil
(16) Remove bearing (36).
assemblies, and armature for damage or wear. Inspect
bearing surfaces of bushings for wear and scoring.
(17) Remove gasket (37).
Inspect drive assembly for general condition. Inspect
(18) Remove dust cap (38).
studs for burned or otherwise damaged threads.
(19) Remove wound stator (39) by removing
d. Repair. Replace brushes before the pigtails are
screws (40) and (41).
within 1/8 inch of the commutator. Replace armature
(20) Remove thermostat assembly (42) by
and field coils which are defective and cannot be easily
removing screws (43).
repaired. Turn down commutator in lathe if rough or out
of round. Replace any other parts which do not pass
(21) Remove bracket (44).
inspection.
(22) Remove armature assembly (45) by
removing nut (46). washer (47) and collar
e. Reassembly.
Reassemble
in
reverse
of
(48).
subparagraph a. above.
(23) Remove armature (49).
29