Cadillac 60 Series 1963 Shop Manual page 292

ELECTRICAL SYSTEM
12-11
c. Shorted armature. Check on growler.
2. Failure to operate with high current draw:
a. Direct ground in switch, terminal or fields.
b. Frozen shaft bearings.
3. Failure to operate with no current draw:
a. Open field circuit. Inspect internal connec-
tions and trace circuit with a test lamp. (See note
concerning shunt field in step lb.)
b. Open armature coils. Inspect commutator for
badly burned bars.
c. Broken or weak brush springs, worn brushes,
high mica on commutator, or other causes which
prevent contact between brushes and commutator.
4. Low no-load speed with low torque and low
current draw:
a. An open field winding. Check with a test lamp
to determine "open" location. (See note concern-
ing shunt field in step lb.)
b. High internal resistance due to poor connec-
tions, defective leads, dirty commutator, and
causes listed under step 3c.
5. High free speed with low developed torque
and high current draw indicates shorted fields.
17. Starter Motor Removal
and Disassembly
When the starter motor is disassembled for
cleaning and inspection of parts, the overrunning
clutch, armature, and fields should not be cleaned
in a degreasing tank, or with grease dissolving
solvents, since these would dissolve the lubricant
in the clutch mechanism and would damage the in-
sulation in the armature and field coils. Worn
parts should be replaced, and the commutator
should be turned down on a lathe if necessary.
a. Removal
1. Disconnect negative battery cable at battery.
2. Disconnect battery lead and ignition switch
lead at starter solenoid.
3. Disconnect neutral safety switch and coil
feed wires at solenoid terminals.
4. Remove two starter mounting bolts at fly-
wheel housing. Pull starter forward and remove
from car.
b. Disassembly (Fig. 12-12)
1. Disconnect field coil connector from "motor"
solenoid terminal.
2. Remove through bolts.
Contact
Finger
Battery And Ignition
Switch Terminal
Rubber Gasket Plunger Solenoid
>. Push Rod v
Return Spring
Shift Lever
Bushing
Neutral Safety
Switch Terminal
Brush
Brush Spring
Grounded Brush Holder
Armature
Assist Spring
Center Frame Assembly
Overrunning Clutch
Fig. 12-12 Starter Cut-Away View