GMC C Series 1993, Руководство по ремонту

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37-M T STARTER MOTORS 6D4-5
just far enough to rest the spring against the side
of the brush (figure 11).
6. Brush attaching screws (23) from the positive (insu­
lated) brushes and field coil leads:
7. Brush plate assembly (22) with the terminal lead
(10) and thermostat (12) (if present) from the field
frame. 5
8. Drive housing screws (38).
9. Drive housing (39).
10. Lever housing O-ring (43). r •
11. Five lever housing screws (47).
12. Lever housing (48).
• Pry it away from the field frame.
13 Armature.
14. Retainer ring (40) and pinion stop (41) from the
armature shaft.
A. Slide a metal cylinder onto the armature shaft
and with a hammer, strike the metal cylinder
against the retainer ring.
B. Remove the snap ring from the groove in the
shaft using pliers. If the snap ring becomes dis­
torted during removal, replace it (figure 12).
15. Thrust washer (20) from the commutator end of the
armature shaft,
16l Three solenoid to lever housing screws.
17. Solenoid.
LEVER HOUSING
Disassemble (Figures 8, 9, and 13)
SOLENOID BOOT
*
Disassemble (Figures 8 and 9)
1. Plunger spring retainer ring (32) from the plunger
Shaft
(63).; ; . ^ : :
2. Plunger spring retainers (28 and 30) and spring
- ' (29). -V: -
3. Plunger boot (27).
SOLENOID -
Disassemble (Figure 10)
1. Two cover attaching screws (87).
2. Nuts (85, 86, 60) and. washers (83, 84) from termi­
nal studs.
3. Cover (82). ; <
4. Solenoid contact (73).
5. Cover gasket (79).
1 ? Inspect
1. Gasket for damage. Replace if necessary.
2. Contact plate (73) and the bottom of the contact
return stud (76) and terminal stud (80) for wear,
corrosion, or dirt.
Clean
Contact points on the contact plate and the bottom
of the studs.
1. Inspection plug (51) from the lever housing (48).
2. Drive assembly (42) from the lever housing.
3. Shaft retainer ring (46) from the, lever housing at
the. end of the shift lever shaft (35).
J. Important
• The retainer will be bent during removal. Do not
attempt to reuse the same ones during reassem-
■ ■ bly.. - . ' y -
4. Shift lever shaft (35). ^
5. Shift lever (34).
FIELD COIL •
Disassemble (Figures 8 and 9)
Important
• Check the field coil for grounds as described
under “Inspection and Repair” before removing
the coil from the frame. Grounds may not be
apparent after the field coil is removed.
1. Outer insulator (57) from the field frame.
2. Pole shoe screws (14) from the field frame, includ-
( ing the frame grounding terminal (68) (if present).
3. Field coil insulator (13).
4. Field coil (17) and pole shoes (15) from the field
.| frame. ...... v .
5. Inside insulator (56) from the field terminal on the
field coil. ^
INSPECTION AND REPAIR
Clean
• Wipe parts clean with a dry cloth.
• Do not clean the parts in a degreasing tank or with
grease dissolving solvents. j.
Inspect
1. Arrnature bushing fit in the end frame, lever hous­
ing, and nose housing;. If the bushings are worn,
replace them. Also replace the oil wicks When a
bushing is replaced.
•..Lubricate the' new oil wicks and bushings before
assembling the starter motor. Refer to “Lubrica­
tion” later in this section.
• If the bushings do not look worn, the oil wicks
do not need to be lubricated.
• To remove an oil wick, make a small hole in the
oil cup and pry out the cup. Install a new wick
and a new oil cup. .
2. Armature shaft for runout or scoring. Replace the
armature assembly if the condition of the armature
shaft is doubtful.
3. Commutator for runout.
• If the commutator is worn, dirty, out of round, or
has high insulation, lathe turn it until the com­
mutator is true.
• Do not undercut commutators on these motors.
• Never use emery cloth to clean the commutator.