Chevrolet 10 Series 1967, Service Manual

Page: 528 / 605

ELECTRICAL—BODY AND CHASSIS 12-28
Fig. 37 - W asher Pump Drive Cam
2. Remove motor through bolts, tap motor frame
lightly, and remove motor from mounting plate.
3. Remove brush spring tension (fig. 33), slide arma­
ture and end plate from motor frame. Pull end plate
from armature.
NOTE: Thrust plug located between armature
shaft and end plate.
4. Remove end play adjusting washers from armature,
noting arrangement for proper reinstallation.
WIPER MOTOR INSPECTION
Check and inspect all parts for serviceability, replace
as necessary. All parts can be replaced individually
except motor frame and field, which is serviced as an
assembly. Service kits also provide screws, nuts and
washers to replace gear cover and terminal board rivets.
WIPER MOTOR DISASSEMBLY
Refer to Figure 32 for exploded view of motor and gear
train.
B E L L O W S A N D C O IL A N D PO LE
S P R IN G H O U S IN G A S S E M B LY
W H E E L A C TU A T O R A C TU A TO R PIN
F ig . 38 - Washer Pump Mechanism
Motor
Reassemble motor using reverse of disassembly
procedures.
NOTE: Armature end play is controlled by end
play washers. See Figure 34 for proper assem­
bly of end play washers. Lubricate armature
shaft bushings with light machine oil.
Gear Box
1. Assemble gear box using reverse of disassembly
procedure.
NOTE:
Lubricate gear teeth with Delco Cam
and Ball Bearing lubricant or equivalent. Be
sure cover is properly located over dowel pins
and be sure to reinstall ground strap.
2. Place wiper in park position and install crank arm
on output shaft, rotate crank so alignment marks line
up with those on cover (fig. 35).
3. Replace retaining nut, place crank arm in vise,
tighten retaining nut.
WINDSHIELD WASHER PUMP
Removal and Installation
Removal of the washer pump from the wiper motor
consists of:
1. Disconnect wiring harness and washer hoses from
washer.
2. Remove the two pump-to-wiper retaining screws and
remove washer from wiper (fig. 36).
3. Reverse removal procedure to install assembly.
Disassembly—Assembly
Refer to Figure 38.
1. Remove washer pump cover.
2. Relay.
a. To remove relay unsolder coil leads from
terminals.
NOTE:
No coil polarity is necessary when re­
soldering coil leads.
b. Remove coil retainer clip and slip coil assembly
out of mounting bracket.
H O LD IN G C O N T A C T S O P E N
P LU N G E R ARM
F ig . 3 9 - Releasing Pump from Lockout Position
CHEVROLET TRUCK SERVICE M ANUAL