Depressed Park Motor; Windshield Washer Pump Overhaul; Four-Lobe Cam; Ratchet Pawl And Pawl Spring - Pontiac Grand Prix Service Manual

12A-12
1 9 6 9 PONTIAC SERVICE MANUAL
DPRESSED PARK MOTOR
NOTE: Early production models are equipped with an
"E" retaining ring. Later models have slots at both top
and bottom of pin. When servicing, replace "E" ring
if
Use Delco Remy cranking motor and distributor lubricant
one is used.
1948792 or equivalent.
Lubrication:
Gear Teeth and Gear Clutch Mechanism
Gear Shaft
Seal Cap (inside)
Armature Worm
WINDSHIELD WASHER PUMP OVERHAUL
DEPRESSED PARK-WASHER PUMP
-
DISASSEMBLY
AND ASSEMBLY
FOUR-LOBE CAM
Refer to Fig. 12A- 18.
1. Remove E-ring, hold relay armature against relay
coil and slide ratchet wheel off shaft.
CQ
UTZON: When reassembling ratchet wheel, be
careful not to damage ratchet dog.
RATCHET DOG
1. Remove attaching screw and lift ratchet dog off
mounting plate.
RELAY-TERMINAL BOARD
1. Remove 4-lobe cam.
2. Remove ratchet pawl and pawl spring.
3. Remove relay armature and spring.
4. Chisel off the four bent-over tabs that secure the coil
mounting bracket to the base. Remove and discard
relay coil and terminal board assembly. To mount a
replacement relay, hold it securely against the base
mounting surface and bend locking tabs over.
CAUTION: Be careful not to damage coil winding or
terminals.
5. To check the pump programming mechanism,
RATCHET PAWL A N 0 PAWL SPRING
manually rotate the 4-lobe cam through complete
12-tooth cycle (360") and observe if pump is operating
1. Disengage pawl spring from pawl and slide off cam
as explained in the PRINCIPLE OF OPERATION
follower pin.
section of Diagnosis Manual.
BRUSH PLATE AND
SPRING ARMATURE END PLATE
MOUNTING BRACKET WASHERS
t
FLAT WASHERS THRUST TIE
PLUG BOLTS
FRAME AND
FIELD ASSEMBLY
Fig. 12A-16 Motor Exploded View-Rectangular Motor