TM-9-2320-279-20-1

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3

TM-9-2320-279-20-1 - Page 232 of 985

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

Table 2-9. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

AIR SYSTEM (CONT)

10. LEFT OR RIGHT WINDSHIELD WIPER DOES NOT WORK (CONT).

Step 3. Check air supply in and out of wiper control valve.

If there is air supply in, but does not come out, replace defective wiper control

valve (para 18-9).

Step 4. Check air supply to windshield wiper motor.

If there is air supply to windshield wiper motor, replace windshield wiper motor

(para 18-3).

11.

WINDSHIELD WASHER DOES NOT WORK.

Step 1. Check for loose connections at windshield washers.

If connections are loose, tighten connections.

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