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 159 of 632

TM 9-2320-279-34-2

Brake System Maintenance Instructions (Cont)

(12)

(13)

(14)

(15)

Install two pipe plugs (4) in lower ports (8

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

Install air pressure gage (7) in upper delivery

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

Install air supply fitting (9) in upper supply

port (5) on backside of treadle valve (3).

Install air supply line (11) on air supply

fitting (9).

(16)

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).

(17)

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

applied. Reading on gage should fall off to zero

when pedal (12) is released.

(18)

Press and hold pedal (12) with treadle valve (3)

fully applied.

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