|
| |
TM 9-2320-360-34-1
b.
Cleaning/Inspection
WARNING
Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and
gloves and use only in a well-ventilated area. Avoid contact with skin, eyes, and
clothes, and don't breathe vapors. DO NOT use near open flame or excessive heat.
The flash point is 100-138° F (38-59° C). If you become dizzy while using cleaning
solvent, get fresh air immediately and medical aid. If contact with eyes is made,
wash your eyes with water and get medical aid immediately.
CAUTION
Do not dip solenoid, armature, field coil, or drive assembly in dry cleaning solvent.
Failure to comply may result in damage to components.
(1)
Clean solenoid, armature, field coil, and drive assembly with cloth dipped in dry cleaning solvent.
(2)
Clean brush holder assembly, insulation washers, bushings, and spacers by dipping in dry cleaning solvent.
(3)
Clean all other metal components with dry cleaning solvent and wire brush.
WARNING
Compressed air for cleaning purposes will not exceed 30 psi (207 kPa). Use only
with effective chip guarding and personal protective equipment (goggles/shield,
gloves, etc.).
(4)
Dry all parts with compressed air.
(5)
Inspect solenoid rubber boot for cracks or tears. Replace if solenoid boot is damaged.
(6)
Inspect brushes for excessive wear. Brushes less than 0.625 in. (16 mm) length must be replaced.
(7)
Inspect brush holders for heat damage or defective springs. Replace faulty brush holders.
(8)
Inspect all insulation washers and bushings. Broken, cracked, or burned insulators must be replaced.
(9)
Inspect nose housing bushing for wear. Maximum inside diameter allowed is 0.753 in. (19.1 mm).
(10)
Inspect CE housing bushing for wear. Maximum inside diameter allowed is 0.756 in. (19.2 mm).
(11)
Inspect shift housing bushing and seal for wear. Maximum inside diameter allowed is 0.878 in. (22.3 mm).
(12)
Inspect shift shaft and shift housing. Replace if grooves are found in shift shaft or pivot hole in shift housing
is out of round.
(13)
Inspect gear teeth and splines on drive assembly for wear and damage. Replace drive assembly if gear
rotates in both directions or does not move freely in and out of assembly.
(14)
Check splines on armature shaft for wear or damage.
(15)
Inspect and measure armature commutator surface. Replace if surface is pitted, scored, burned, or coated
with hard carbon or oil. Replace if commutator diameter is less than 2.063 in. (5.240 cm).
(16)
Inspect inside of field ring and field coil. If burn marks are found, field coil must be replaced. If pole pieces
and armature show wear due to rubbing, commutator end housing, shift housing, and nose housing
bushings must be replaced.
6-35
|
