TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check defective windshield wiper motor (4) for input air pressure as follows: using 9/16-inch open-
end wrench, loosen input line fitting (5) six turns. Turn windshield wiper control knob (6) clockwise
to on position, listen for hissing noise. Turn windshield wiper control knob (6) counterclockwise to
off position.
a. If hissing noise is not heard, replace air line (7). Using 9/16-inch open-end wrench,
unscrew and take off input line fitting (5) and output line fitting (8). Screw on and
tighten input line fitting (5) and output line fitting (8).
b. If hissing noise is heard, replace windshield wiper motor (4) (page 2-1308).
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