ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
ONE WINDSHIELD WIPER DOES NOT WORK.
Safety goggles must be worn when working with air lines to prevent personal injury.
Check AIR PRESSURE gage for air pressure between 90 and 130 psi. If specified air pressure is
not present, start engine and check that air pressure in air system is between 90 and 130 psi (TM
5-3805-254-10). Shut down engine (TM 5-3805-254-10).
Check windshield wiper control (1) for output air pressure as follows: using 9/16-inch open-end
wrench, loosen output line fitting (2) six turns to windshield WIPER motor that is not working. Turn
windshield wiper control knob (3) clockwise to on position, listen for hissing noise. Turn windshield
wiper control knob (3) counterclockwise to off position.
a. If hissing noise is not heard, replace windshield wiper control (1) (page 2-1321).
b. If hissing noise is heard, go to step 2.