ELECTRICAL-BODY AND CHASSIS 12-46
Fig.
65 - Wiper Motor and Gear Box Assembly
1.
2.
3.
4.
5.
6.
Nut
Crank Arm
Seal Cap
Retaining Ring
Washer
Gear Box Cover
7.
8.
9.
Output Gear and
Shaft Assembly
Intermediate Gear
Wave Washer
10.
Gear Box Housing
11.
Brush Plate Assembly and
Mounting Brackets
12.
Brushes
13.
Wave Washers
14.
Flat Washers
15.
Armature
16.
Thrust Plug
17.
Frame and Field
18.
End Plate
19.
Tie Bolts (Two Required)
not install motor which has dropped or hung
from the drive link.
7.
Connect wiring and washer hoses to assembly.
8. Install plenum grille side cover (Chevrolet models
. only).
CheveKe (Fig, 61)
1.
Make certain motor is in park position.
2.
Disconnect washer hoses and all electrical
connectors.
3.
Remove three motor retaining bolts, carefully re-
move motor from firewall and detach clip retaining
wiper transmission drive arm to motor crank arm.
4.
To install, check sealing gaskets at motor and re-
taining bolts; replace as necessary.
5.
Attach motor crank arm to transmission rod and in-
stall clip. Position motor to cowl and install retain-
ing bolts.
CAUTION: Motor assembly must be in the
park position prior to installation to cowl. Do
not install motor which has dropped or hung
from the drive link.
6. Install washer hoses and electrical connections.
Chevy
II (Fig. 63)
1.
Make certain wiper motor is in park position.
2.
Working under instrument panel, remove special
retainer clip securing transmission linkage to motor
crank arm.
3.
Disconnect linkage, electrical connectors and washer
hoses.
4.
Remove three motor retaining bolts and remove
motor from opening cowl.
5.
To install, check sealing gaskets at motor and re-
taining bolts; replace as necessary.
6. Position motor to mounting location and install re-
taining bolts.
CAUTION: Motor assembly must be in the
.park position prior to installation to cowl. Do
not install motor which has dropped or hung
from the drive link.
7.
Attach crank arm to transmission rod and secure
with retaining clip.
8. Connect wiring harness and washer hoses.
NON-DEPRESSED PARK WIPER
CHEVELLE, CHEVY II AND CAMARO
The Type "E" two-speed electric windshield wiper
assembly (fig. 64) incorporates a non-depressed type
(blades park approximately 2" above windshield molding)
motor and gear train. The rectangular, 12 volt, com-
pound wound motor is coupled to a train consisting of a
helical drive gear at the end of the motor armature shaft,
an intermediate gear and pinion assembly, and an output
gear and shaft assembly. The crank arm is attached to
the output gear shaft.
Two switches, connected in parallel, control the start-
ing, stopping and parking of the Type "E" wiper motor.
The manually operated start, stop switch is located on
the instrument panel, while the cam operated park switch
is located in the wiper gear box.
CHEVROLET CHASSIS SEKV1CE MANUAL
ELECTRICAL-BODY
AND
CHASSIS
12-49
BELLOWS
AND
SPRING
HOUSING
COIL
AND
POLE
ASSEMBLY
VALVE
ASSEMBLY
RATCHET
PAWL
ASSEMBLY
RATCHET
WHEEL
ACTUATOR
PLUNGER
ARM
ACTUATOR
PIN
HOLDING CONTACTS
OPEN
RAMP TANG
PLUNGER
ARM
Fig.
73 -
Releasing
Pump from
Lockout Position
Fig.
72 -
Washer
Pump
Mechanism
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. 66).
3.
Reverse removal procedure to install assembly.
DISASSEMBLY-ASSEMBLY
Refer to Figure
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.
3.
Ratchet Pawl
a. To remove ratchet pawl disengage spring from
ratchet pawl and slide ratchet pawl from shaft.
CAUTION: Be sure spring is properly assem-
bled before replacing washer pump cover.
Terminal Board
a. Remove terminal board attaching screws, ratchet
dog and board from washer base.
Ratchet Wheel
a. Remove lock ring from shaft.
b.
Slide ratchet wheel from shaft.
Valve Assembly
a. To remove valve assembly remove screws that
secure valve assembly to bellows housing.
CAUTION: It may be necessary to carefully
pry bellows lip out of the valve body groove.
Bellows
a. To remove bellows first remove valve assembly.
b.
Manually operate pump clockwise to release pump
from 'lock-out" position (fig, 73).
c. Hold bellows plunger arm from moving, then push
in against bottom of bellows with thumb and twist
bellows spring from housing.
Actuator Pin
a. Remove actuator pin retaining spring and slide
pin from washer base.
Reverse disassembly procedure to assemble washer.
DEPRESSED PARK 2-SPEED WIPER
CHEVROLET
GENERAL DESCRIPTION
The Type "C" two speed electric wiper assembly (fig.
74) incorporates a depressed park type (blades park
against windshield lower molding when the motor is
turned off) motor and gear train. The wiper has a com-
pound wound 12 volt motor and a gear box section con-
taining the gear mechanism and relay control. The motor
armature is fitted with a worm gear which drives the
main gear assembly and crank arm.
The relay control, consisting of a relay coil, relay
armature and switch assembly, is located in the gear box
section bid controls the starting and stopping of the wiper
through a latching mechanism (fig. 75).
An electric washer pump is mounted on the gear box
section of the wiper and is driven by the wiper unit gear
assembly (fig* 75).
The overhaul procedures for the wiper are broken down
into three major areas: The motor section, gear box
section and washer pump section. Each section maybe
serviced independently of the other.
CHEVROLET CHASSIS SEftVKX
