SERVICE MANUAL
Install spring washer, if applicable, to the drive
gear and shaft (5) with the convex surface facing the
drive gear. Install parking cam (8) on drive gear and
shaft assembly(5). Face dotted end of cam in same
direction as was noted in "Disassembly."
Place drive gear and shaft assembly (5) in drive
end housing bushing bore. Install spacer washer and
crank arm. Install nut and tighten to a torque of 55-60 in.
lbs. Be certain to support crank arm while tightening nut
to prevent stripping gear teeth (see "Disassembly").
Install gasket (10) and parking switch contact
plate (9). Position drive end housing cover (11) on the
drive end housing (3) and insert retaining screws. Install
mounting bracket (2) on drive end housing (3).
TESTING
Before installing the windshield wiper motor on
the vehicle, check the operation of the unit as follows:
Be certain that the required crank arm or drive
plate and spacing washers are assembled to the drive
shaft when testing the motor.
Fig. 11. Windshield Wiper Motor Wiring Schematic
1.
Red
2.
To Battery
3.
Black
4.
Control Switch
5.
Green
6.
Parking Switch
7.
Series Winding
8.
Shunt Winding
9.
Black
10.
Resistor
11.
Yellow
Temporarily connect either terminal of a fully
charged battery to the motor housing. Connect the
remaining battery terminal and the wiper motor wiring
harness to a control switch as follows: Connect red
cable to "A" terminal, green cable to "F" terminal, black
cable to "P" terminal, and remaining battery cable to "B"
terminal.
The wiper motor should meet specifications
when operated through control switch. If not, tap
commutator end frame lightly with a rawhide mallet to
make certain that the armature is aligned. If unit still
does not meet specifications, it will be necessary to
disassemble the unit to locate the trouble.
INSTALLATION
Place wiper motor in position and insert bolts
holding motor and bracket assembly to cowl. Connect
wiper arm Linkage. Connect wiring harness to control
switch.
ADJUSTING AUTOMATIC PARKING
The wiper blade parking position should be
adjusted after the motor has been installed in the vehicle.
Adjust parking as follows:
Operate motor through control switch. When
switch is turned to "OFF" position, motor should stop with
Linkage fully extended. If necessary, this position can be
obtained by adjusting the parking stud which protrudes
through the drive end housing cover. Install the wiper
arm and blade to the wiper arm shaft assembly so that
the blade is in the desired parking position. Operate the
wiper and note the automatic parking position of the
blades when the unit is turned off. If the blades do not
now park in the required position, readjust by moving the
parking stud.
LUBRICATION
During reassembly, apply two or three drops of
SAE-10 oil to the armature shaft bushing felts.
Place 1/3 ounce of Lubri-Plate Aero Lubricant or
its equivalent in the drive end housing worm cavity. No
lubricant should be placed between the gear and
housing. If the housing has two bushings in the crank
arm shaft bore, fill the space between the bushings with
the above specified lubricant.
Fill groove in gear and shaft assembly with
lubricant, if applicable. Apply a thin film of lubricant to
the cam, spring washer and spacing washer. Apply a
thin film of Lubri-Plate No. 10 or its equivalent to the
connecting link bushings.
Fill the space between the bushings in the inner
spacer with Lubri-Plate Aero Lubricant or its equivalent.
CTS-4056-Chapter II
PRINTED IN UNITED STATES OF AMERICA
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