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TM 10-4320-342-24
4-4. STARTER-GENERATOR REPAIR - continued.
b.
CLEANING.
WARNING
Dry cleaning solvent, P-D-680, Type III, is potentially dangerous to personnel and
equipment. Eye and skin protection is required. Avoid repeated and prolonged
skin contact. Wash immediately after exposure. Do not use near open flame or
excessive heat. Use only in areas with good ventilation.
(1)
Thoroughly clean all parts of starter-generator except brushes, bearings, armature and stator assembly by
washing in cleaning solvent.
WARNING
Compressed air can blow dust into the eyes. Wear eye protection. Do not exceed
30 psig air pressure.
(2)
Rinse parts in clean solvent and dry with low pressure filtered compressed air (5 to 10 psi).
(3)
Clean stator assembly as follows:
(a)
Blow dust and other foreign matter from inside stator assembly by using low pressure filtered compressed
air.
(b)
Wipe with a cloth moistened in cleaning solvent.
(4)
Clean armature using low pressure filtered compressed air and a soft bristle brush to clean foreign material from
slots between commutator bars.
(5)
After cleaning armature and stator assembly, let dry completely.
c.
INSPECTION. Refer to Figure 4-3.
(1)
Inspect air inlet (4) for dents or other damage. Replace if defective.
(2)
Inspect fan (6) for cracked, damaged or broken blades. Replace if defective.
(3)
Inspect brushes (19) for cracks, chips, frayed leads, loose rivets and brush wear. Replace if remaining allowable
wear will be exceeded before next inspection.
(4)
Inspect dampener plate (12) for cracks, chips, frayed leads, loose rivets and brush wear, warps or signs of wear.
Replace, if defective.
(5)
Inspect dampener back plate (14) for cracks using magnetic particle inspection per MIL-I-6868. Replace if
defective.
(6)
Inspect dampener hub (13) for cracks using magnetic particle inspection per MIL-I-6868. Replace if defective.
4-11
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