Cadillac 60 Series 1963 Shop Manual page 359

12-78
ELECTRICAL SYSTEM
4. Insert Locking Arm Gage, J-7652, over stop
stud to limit travel of locking arm and prevent
rotation of drive screw.
5. Connect black lead of tester to #1 terminal
on front of power unit.
6. Hold contact arm against grounding point
on locking arm side of magnet and observe read-
ing on ammeter. If reading on ammeter indicates
more than 7 amps, motor is drawing too much
current and should be replaced.
7. Disconnect tester leads, remove Locking
Arm Gage, install cover, and connect multiple
connector.
e. Checking for Damaged Cables and Gears
1. Raise rear end of car and place on jack
stands.
2. Start engine and move transmission shift
lever to either "Dr" range.
3. Remove speedometer cable at power unit
and check to see if nylon gear is turning. This
will determine if cable from transmission to
power unit is turning and if gear is operating.
4. If nylon gear is turning, cable to speedo-
meter is broken or speedometer is inoperative.
5. If nylon gear is not turning, disconnect trans-
mission cable at power unit.
6. If cable is turning, gears are stripped inside
power unit.
7. If cable is not turning, check for a broken
cable or stripped transmission speedometer drive
gear.
8. Shut off engine and lower car.
9. Replace parts as required.
99. Locking Arm Latch and
Grounding Point Adjustments
(On Cars)
There are two sets of electrical grounding
points that operate the Cruise Control motor in
the forward and reverse direction. One grounding
point on the motor side of the magnet controls
acceleration, while the other grounding point On
the locking arm side of the magnet controls de-
celeration.
The contact arm is energized, and any ground-
ing resulting from contact with a screwdriver or
similar tool can cause a short or blow a fuse.
The grounding points are still operative when
blackened or pitted; however, any build-up on the
points should be removed. When filing points,
use a cloth to catch filings as they could become
wedged between the small ball bearings in the
nut on the drive screw and cause the drive screw
to stick.
The locking arm latch must be properly ad-
justed before attempting to adjust the grounding
points. Point adjustment may be made at either
set of grounding points on the magnet assembly
as a single adjustment takes care of both. The
following procedure must be followed in exact
sequence:
a. Locking Arm Latch Adjustment
1. Disconnect multiple electrical connector at
front of power unit.
2. Disconnect accelerator linkage rod from ex-
terior arm.
3. Remove four screws securing power unit
cover and remove cover.
4. Move locking arm up against magnet and
press down on armature plate to latch the unit,
simulating automatic control.
5. Use a feeler gage to measure gap between
locking arm and latch on armature plate, Fig.
12-92. This -gap must be between .001 inch -
.006 inch. If gap is not within specifications,
adjust gap by turning adjusting screw counter-
clockwise to increase gap or clockwise to de-
crease gap.
!». Grounding Point Adjustment
1. Disconnect drive cable at base of power
unit.
2. Move contact arm against either grounding
point and use a feeler gage to measure the full
gap between contact arm and other point, Fig.
12-93. This gap must be .090 inch ± .010 inch.
If gap is not within specifications, bend either
grounding point on magnet assembly until proper
gap is obtained.
3. Insert Locking Arm Gage, J-7652, over stop
stud. Turn ignition on and move contact arm
against ground point on locking arm side. When
magnet assembly is in low position, disconnect
plug from terminal block while still holding con-
tact arm against point. Do not use screwdriver
to turn drive screw. ~
4. Turn governor weights until they are parallel
with drive screw, then place Governor Weight
Wedge, J-8547, between governor weights, press-
ing down on wedge until weights are held out to
their stop position.