TM 5-3810-306-34
b. Turn armature (30) (commutator end) if
contact with eyes is made, wash your
necessary in a lathe to remove surface pits,
eyes with water and get medical aid
scoring and contamination. Minimum diameter
immediately.
after turning must be 2-1/16 inch. Maximum
runout should be .003 inch TIR.
Compressed air used for cleaning
purposes will not exceed 30 psi. Use
12. TEST FIELD COIL FOR GROUND.
only with effective chip guarding and
personal
protective
equipment
a. Connect one multimeter test lead to a bare metal
(goggles/ shield, gloves, etc.).
surface on the field ring (49) and the second test
lead to each of the two field coil jumpers.
1. CLEAN ALL METAL PARTS IN SOLVENT P-D-680.
b. LOW resistance indicates a ground.
If
2. USE LOW-PRESSURE COMPRESSED AIR TO DRY
grounded, engine starter must be replaced.
PARTS.
13. INSPECT FIELD RING (49) FOR DAMAGE.
REASSEMBLY:
a. Inspect field ring (49) for burn marks.
1. IF REMOVED,
INSTALL
BUSHING
(26)
IN
HOUSING (9).
b. Inspect pole pieces for wear. If other field pieces
and armature show wear, replace bushings (26)
a. Ream bushing (26) ID to .754-inch.
and (33).
b. Press bushing (26) into housing (9).
CLEANING:
2. INSTALL JUMPER AND SCREW ASSEMBLY (12).
WARNING
a. Slide washer guard (14) and insulation washer
Dry cleaning solvent P-D-680 is toxic
(17) on assembly and insert into housing (9).
and flammable.
Wear protective
goggles and gloves and use only in a
b. Align jumper and screw assembly with markings
well ventilated area. Avoid contact
made at disassembly.
with skin, eyes, and clothes and don't
breathe vapors. Do not use near
c.
Install insulation washer (16), guard washer (14),
open flame or excessive heat. The
two belleville washers (15) (face-to-face) and
guard washer (14).
flash point is 100F-138F (38-59C).
If you become dizzy while using
d. Install hex nut (13) and torque to 33-37 ft-lbs
cleaning solvent, get fresh air
(44-49 Nm).
immediately and get medical aid. If
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