GMC 1976 ZEO 6083 Maintenance Manual page 33

1- 1 6 BODY
Figure 26-Pivot Shaft Mounting Bracket
When the retainer clip is squeezed together, the
blade can be removed by sliding out of the blade
assembly .
The blade assembly is retained to the wiper arm
by a nut and bolt at the end of the arm. The removal
of this nut and bolt will allow removal of the blade
assembly and the windshield washer nozzle .
Wiper blades should be installed with the wiper
arm in "park" position and the blade to arm bolt
approximately 3.25 inches above the windshield rub-
ber moulding.
WIPER ARM ADJUSTMENT
To adjust sweep of blades to provide maximum
visibility, turn on wipers, then note sweep of arms .
CAUTION : Do not attempt to manually
force wiper arms into position as damage to
linkage or motor may occur.
If necessary, remove arms as follows;
1. Remove nut from end of wiper arm and
remove arm.
2. Arm can be reinstalled in any one of several
positions due to serrations on pivot shaft driver head
and in wiper arm head.
NOTE : Checking blade sweep should be done
with the windshield wet.
WINDSHIELD WIPER MOTOR
REPLACEMENT
NOTE: The windshield wiper motor is serviced
as an assembly . Do not attempt to repair the
motor .
REMOVAL
1 . Disconnect hoses (2) at motor and tape end to
prevent loss of fluid and entrance of dirt or water
into system .
2. Loosen cable retaining screw at bottom of mo-
tor and remove pin from arm on motor assembly. See
Figure 24 .
3. Remove connector arms by sliding back clips
and disconnecting arms from the motor assembly .
4 . Remove three bolts retaining motor assembly
to its bracket.
INSTALLATION
1. Position wiper motor on bracket and install
three retaining bolts.
2. Position connector arms on motor crank arm
and secure with slide clips.
3 . Insert pin at end of cable assembly and secure
with retaining screw on motor assembly.
4. Connect hoses to motor assembly as shown in
Figure 27 .
5. Check power steering fluid level. Operate wip-
ers on a wet windshield for several minutes. Then
recheck power steering fluid level. Also check for
fluid leaks. Correct as necessary.
WINDSHIELD WIPER MOTOR
FILTER REPLACEMENT
The windshield wiper motor filter may require
replacement particularly in the event of a power
steering pump repair . Following is replacement
procedure.
1. Disconnect hose from windshield wiper motor
filter shown in Figure 27 .
2. Remove filter from windshield wiper motor
and discard.