8-4
PERSONNEL AIR DUCT VENTILATING FAN REPAIR (CONTINUED)
F
G
H
I
Test noise filter (17) for continuity (p 9-9). Replace as
necessary.
Measure length (A) of two electrical brushes (28). Length of
new brushes (28) is 0.8250-0.8650 inch.
Inspect two screws (27) for damaged threads. Replace if
threads are damaged.
Inspect spring tension washer (38) for damage. Replace if
damaged.
If armature and/or motor field and frame
assembly are damaged or defective, or if ar-
mature shaft is worn beyond limits for proper
bearing fit, replace motor assembly as a unit.
TM 9-2350-267-34
J
Test armature (33) on growler.
K Test motor field and frame assembly (34) for open or short
field windings.
TA309819