Piper Navajo PA-31 Service Manual page 134

PIPER NAVAJO SERVICE MANUAL
4-50e. WIPER BLADE AND ARM INSTALLATION. (Refer to Figure 4-9.)
a.
Install the wiper blade to the arm assembly and ascertain that the blade is locked to the arm.
b. Turn the wiper switch on momentarily to the PARK position, then position the arm assembly (3)
and adjustment sleeve (6) on the serrated converter shaft so the wiper blade is clearing the windshield
centerpost by approximately 1.75 to 2.00 inches during operation.
c. If the arm is not in the proper position, remove the arm and sleeve and rotate it in the direction
required to get the proper setting.
NOTE
The outside teeth on the adjustment sleeve will not locate the arm
in the desired position.
d.
Install the bolt through the wiper arm into the converter shaft. Tighten and safety with
MS20995-C41 lockwire (5).
4-50f. WIPER BLADE AND ARM ADJUSTMENT. (Refer to Figure 4-9.)
a. Adjust the wiper blade height on the windshield by unlocking the blade height adjustment cam
(2).
d. Adjust the blade height on the windshield so the bottom of the blade clears the windshield collar
by three inches. Lock the adjustment cam.
c.
To adjust the wiper blade angle, loosen the nut (1) on the wiper blade attachment stud and rotate
the blade until it is parallel with the windshield centerpost, then tighten the nut on the stud.
d. Adjust the wiper arm tension to obtain five pounds tension at the blade pivot point by
adjustment of the nut (4) on the wiper arm adjustment stud.
NOTE
Ascertain that the base of the adjustment stud (4) is in the recess
provided in the wiper arm (3).
4-51. SIDE WINDOWS.
4-52. REMOVAL OF SIDE WINDOWS.
a.
Remove the screws that hold the trim molding around inside of the window.
b. Remove the nuts that secure the inner window retainer molding and remove window.
c. Remove the rivets that secure the outer window retainer molding and remove window.
d. Remove old window sealer from surfaces.
4-52a. WINDOW REPAIRS (SIDE ACRYLIC WINDOWS ONLY). Scratches up to a maximum depth
of 015 of an inch may be safely removed from the pane without weakening the window Areas with scratche.
gouges. nicks. etc.. exceeding 003 of an inch in depth and those with less than .003 of an inch in depth. but
having sharp edges which cause hanging of fingernail should be locally rounded out or buffed.
The following methods should be used for repairs:
a. AREAS WITH SMALL SCRATCHES.
1 Clean the window. using generous amounts of water and a mild detergent.
2.
Polish the window with an approved compound and soft cloth.
3
Clean and wax the polished area.
b. AREAS WITH LARGE SCRATCHES. GOUGES AND NICKS: Areas with damages exceeding
003 of an inch depth or those with less than .003 of an inch in depth, having sharp edges hich cause hanging
of fingernail should be locally rounded out or buffed.
Revised: 3/2/84
STRUCTURES
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