TM-9-2320-279-34-2

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

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS DIRECT SUPPORT AND GENERAL SUPPORT, VOLUME 2 OF 3

TM-9-2320-279-34-2 - Page 158 of 632

TM 9-2320-279-34-2

Brake System Maintenance Instructions (Cont)

11-14. BRAKE TREADLE VALVE REPAIR (CONT).

(6)

Press pedal (12) to several positions between

fully released and fully applied. Delivered

pressure on gage (7) should vary

proportionately with movement of pedal (12).

(7)

Press pedal (12) until treadle valve (3) is fully

applied. Reading on gage (7) should fall off to

zero when pedal (12) is released.

(8)

Remove air supply line (11) from air supply

fitting (9).

(9)

Remove two pipe plugs (4) from upper ports (5

and 6) on backside of treadle valve (3).

(10)

Remove air pressure gage (7) from lower

delivery port (8) on backside of treadle valve (3).

(12)

Remove air supply fitting (9) from lower supply

port (10) on backside of treadle valve (3).

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