Buick LeSabre 1965 Service Manual page 602

1 0 - 3 2 CRANKING MOTOR REPAIRS
ELECTRICAL SYSTEMS
and insulating washer from the
solenoid "S" terminal. Remove
large nut and insulating washer
from the solenoid battery termi-
nal. See Figure 10-26. Then, re-
move two screws that attach
switch cover to solenoid and re-
move cover for inspection of
switch parts.
5. Remove shift lever fulcrum
bolt and r e m o v e shift lever,
plunger and return spring.
6. Remove two screws holding
center bushing plate to drive
housing. Remove armature and
drive assembly from drive hous-
ing. Remove thrust collar from
pinion end of armature shaft.
7. To remove drive assembly
from armature, place a metal
cylinder of proper size (1/2" pipe
coupling will do) over end of shaft
to bear against the pinion stop
retainer. Tap retainer toward
armature to uncover snap ring.
See Figure 10-32. Remove snap
ring from groove in shaft, then
slide retainer and pinion drive
assembly from shaft.
8. Clean all parts by wiping with
clean cloths. The armature, field
coils, and drive assembly must
not be cleaned by any degreasing
ARMATURE SHAFT
DRIVE ASSEMBLY
Figure 10-32—Removing Pinion Stop
Retainer and Snap Ring
or high temperature method. This
might damage insulation so that a
short or ground would subsequent-
ly develop, and will remove lubri-
cant originally packed in the
overrunning clutch so that clutch
would soon be ruined.
9. Carefully inspect all parts for
wear or damage and make neces-
sary repairs or replace unser-
viceable p a r t s . Any soldering
must be done with rosin flux;
never use acid flux on electrical
connections.
10. Test armature and make nec-
essary repairs or turn commuta-
tor if required, following the same
procedure as specified for gen-
erator in paragraph 10-20.
b. Assembly of Cranking Motor
1. Lubricate shift lever linkage
and install in drive housing. CAU-
TION: Never lubricate solenoid
plunger or plunger cylinder.
2. Assemble solenoid by revers-
ing the disassembly procedure.
Install return spring. Apply seal-
ing compound on both sides of
solenoid flange where it extends
between drive housing and field
frame. Then install solenoid.
3. Lubricate armature shaft with
silicone grease. Install drive as-
sembly with pinion outward.
4. Slide pinion stop retainer down
over shaft with recessed side
outward.
5. Place a new snap ring on drive
end of shaft and hold it in place
with a hard wood block. Strike
block with hammer to force snap
ring over end of shaft, then slide
the ring down into groove in shaft.
See Figure 10-33, View A.
6. Place thrust collar on shaft
with shoulder next to snap ring,
and move the retainer into contact
with ring. Using pliers on oppo-
site sides of shaft squeeze re-
tainer and thrust collar together
until snap ring is forced into the
retainer. See F i g u r e 10-33,
View B.
Figure 10-33—Pinion Stop Retainer and
Snap Ring Installation
7. Lubricate drive housing bush-
ing with silicone grease and in-
stall armature and drive assembly
in housing.
8. Continue with assembly of
cranking motor by reversing dis-
assembly procedure. If field coils
were removed from field frame,
use care in tightening pole shoe
screws to avoid distortion of parts
and make sure that screws are
securely tightened.
9. Position field frame assembly
over armature assembly so that
dowel pin engages hole in drive
housing. Use care to prevent
damage to brushes and brush
holders. Make sure that brushes
are properly seated on com-
mutator.
10. Install thrust washer on com-
mutator end of armature as-
sembly. Lubricate b u s h i n g in
commutator end frame with sili-
cone grease and install end frame.
11. Install thru bolts and tighten
securely. Connect field leads to
motor terminal of solenoid with
connecting screw.
12. Test solenoid s w i t c h and
check pinion clearance as de-
scribed in paragraph 10-29. If a
reliable starter tester is avail-
able, test motor as described in
paragraph 10-30.