GMC 1976 ZEO 6083 Maintenance Manual page 446

6Y- 66 ENGINE ELECTRICAL
Figure 75-Checking Field Coil for Ground
To check both windings, connect the ammeter,
variable resistance and voltmeter as for previous test .
Ground the solenoid motor terminal . Adjust the
voltage to 10 volts and note the ammeter reading. It
should be 41 to 47 amperes for all starting motors .
Current draw readings that are over specifica-
tions indicate shorted turns or a ground in the wind-
ings of the solenoid and the solenoid should be
replaced . Current draw readings that are under
specifications indicate excessive resistance . No read-
ing indicates an open circuit. Check connections
then replace solenoid if necessary.
ASSEMBLY
1 . If the solenoid assembly or shift lever was
removed, proceed as follows :
HOLD WINDING rPULL WINDING
PLUNGER
lURI1f111F1D / VARIABLE
RESISTANCE
VOLTMETER
TO STARTER SWITCH
MOTOR TERMINAL
- M L
1
III
~` . l a y l V n , 1 1
4
1
1
C
CONTACT DISC
BATTERY TERMINAL
AMMETER
BATTERY
A-1889
Figure 76-Checking Solenoid Wiring
a. Assemble shift lever and plunger.
b. Position shift lever and plunger assembly in
drive gear housing and install lever pivot bolt . (figure
72)
c. Install solenoid assembly to drive gear
housing. (figure 71)
2. If the overrunning clutch was removed from
the armature shaft, assemble as follows:
a. Lubricate drive end of armature shaft with
lubricant
1960954
or equivalent .
b. Slide clutch assembly onto armature shaft
with pinion away from armature . (figure
68)
c. Slide retainer onto shaft with cupped sur-
face facing away from clutch assembly .
shaft:
d. Install snap ring into groove on armature
e. Assemble thrust collar onto shaft with
shoulder next to snap ring .
f. Position retainer and thrust collar next to
snap ring . Using two pliers, grip retainer and thrust
collar and squeeze until snap ring is forced into re
tainer and is held securely in groove in armature
shaft. (figure 77)
3. Lubricate drive gear housing bushing with lu-
bricant
1960954
or equivalent .
4 .
With thrust collar in place against snap ring
and retainer, slide armature and clutch assembly into
Figure 77-Installing Retainer and Snap Ring