Cadillac 60 Series 1963 Shop Manual page 332

ELECTRICAL SYSTEM
12-51
Drive Plate
Motor Thru Bolts .
Large Coil Spring
Drive Pawl
Stop Arm
Relay Coi
Armature
Small Coil Spring
Ground Strap
'E" Ring Retainer
Latch Arm
Fig. 12-74 Windshield Wiper Drive Mechanism - 75 and Commercial Chassis
The plunger arm slips off the eccentric at the
bottom of the ratchet wheel and moves in the di-
rection of the bellows. This action causes the
bellows to collapse and forces water from the
bellows out through the outlet valve to the nozzles.
As the plunger arm starts on its return travel,
water is drawn through the inlet valve and refills
the bellows for the next exhaust stroke.
The action is repeated through the 21 teeth on
the ratchet wheel. As the ratchet wheel completes
its rotation, the tang on the armature slips into
the recess of the ratchet wheel, which then allows
the ratchet pawl to disengage from the wheel and
move freely through the armature, and the washer
is again in the idle position.
Washer Relay
Ratchet Pawl
Relay Armature
Armature Tang
Inlet Nozzle
Wire Stop
Plunger Arm
Nylon Ratchet Wheel
Outlet Nozzles
Fig. 12-75 Windshield Washer Mechanism
SERVICE INFORMATION
74. Windshield Wiper and Washer
Switch Removal and Installation
The procedure for removing and installing the
windshield wiper and washer switch is described
in Section 15, Note 10.
75. Windshield Wiper and Washer
Unit Removal and Installation
(60 and 62 Series)
a. Removal
1. Disconnect negative battery cable at battery.