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 265 of 985

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cent)

] 2-15.

TROUBLESHOOTING INSTRUCTIONS (CONThj

Table 2-9. lroubleshoofing (Contj

Vlalfunction

Test or Inspection

Corrective Action

DUAL AIR BRAKE SYSTEM (CONT)

r. SpRING BRAKES WILL NOT RELEASE (CONT).

PARKIJWv~RAKE

LINE NO. 612

Step

6.

Release parking brakes. Loosen line No. 612 at parking brake valve.

If no air comes out of line No. 612, replace parking brake valve (para 11-20).

If air comes out of line No. 612, replace spring brake control valve (para 11-17).

B. -

BRAKES OVERHEAT.

Step 1. Check brakes for proper adjustment.

Adjust brakes (para 11-7).

Step 2. Check that brakes are releasing (go to MALFUNCTION 3, Steps 2 and 3).

Replace damaged components (para 11-3 or 11-4).

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