Chevrolet 10 1971 Series Chassis Service Manual page 406

ELECTRICAL— BODY AND CHASSIS 12-20
PUMP MOUNTING SCREWS
Fig. 20— Washer Pump Attaching Screws
6. Remove washer pump assembly.
7. To install reverse steps 1-6.
Install washer
CAUTION:
connector with battery lead on terminal with no
tang (fig. 20). Incorrect installation of connector
will result in direct ground and destroy wiper
motor fuse.
Disassembly— Assembly
Fig. 21— Washer Pump Drive Cam
'W '
multiplug harness
4 LOBE CAM
(PRESS FIT
O N SHAFT)
Fig. 22— Washer Pump Drive Cam and Actuator
Refer to Figure 23, 24.
1. Remove washer pump cover by squeezing.
2. Solenoid assembly - ratchet dog.
a. Remove the ratchet dog retaining screw. Hold
the spring loaded solenoid plunger in position
and carefully lift the solenoid assembly and
ratchet dog off the frame of the pump.
b. Separate the ratchet dog from solenoid mounting
plate as required.
3. Ratchet pawl (fig. 23, 24).
a. Disconnect ratchet pawl spring.
b. Remove ratchet pawl retaining ring and slide
ratchet pawl off cam follower shaft.
4. Ratchet wheel (fig. 23, 24).
a. Follow step 1 under solenoid - ratchet dog disas­
sembly.
SO LEN O ID COIL
VALVE \
A SSEM BLY \
RATCHET
PAW L
Fig. 23— Washer Pump Mechanism
SO LENO ID
PLUNGER
RATCHET
PAW L
SPRIN G
C A M FOLLOW ER
UPPER PIN
"E " R IN G
10-30 CHEVROLET TRUCK SERVICE MANUAL