GMC T Series 1994 Repair Manual page 580

64
Brush
33.
Grounded Brush Holder
49.
Insulated Brush H older
50.
Pivot Pin
63.
64. Brush Holder Spring
Brush Holder Support
65.
Figure 8— Replacing Brushes on the SD-300
SOLENOID
First perform the electrical tests on the solenoid
described under " Inspection and Repair" later in this
section. Then disassemble the solenoid to inspect the
contact disc and terminals.
Remove or Disconnect (Figure 9)
1. Nuts from the " S" terminal (23) and the motor ter­
minal (24).
DISASSEMBLY OF THE SD-210 AND
If the motor does not perform to specifications, it may
need to be disassembled for further testing of the com­
ponents. Normally, the starter motor should be disas­
sembled only so far as is necessary to make repair or
replacement of parts. As a precaution, it is suggested
that safety glasses be worn when disassembling or
assembling the starter motor.
Before disassembly, perform the electrical tests on
the solenoid described under " Inspection and Repair"
later in this section.
F4219
SD-260 STARTER MOTORS
24
23. " S " Terminal
24. Motor Terminal
25. " BAT" Terminal
66. Contact Disk Assembly
67. Cover
Figure 9— Solenoid Disassembled
i
2. Screws attaching the end cover (67).
3. End cover from the solenoid body.
Inspect
1. Contact disc (66), motor terminal (24) contact
surface, and BAT terminal (25) contact surface
for wear.
• Replace if worn.
SOLENOID
❖ Disassemble (Figure 10)
A. Clean the outside of the starter housing.
• Remove grease, oil, mud, etc.
B. Make scribe marks to show the relationship of the
drive end frame, frame and field assembly, and the
end frame to aid in assembly.
C. Note the position of the through-bolts.
• One has a stud on the end.
F4220