TM-5-3805-254-14-P-2

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)

JUNE 1980

TM-5-3805-254-14-P-2 - Page 161 of 894

TRUCK SERVICE MANUAL

CHAPTER IX

SPRING BRAKE AND TWO-WAY CONTROL VALVE

SPRING BRAKE CONTROL VALVE

(MIDLAND ROSS)

DESCRIPTION

The spring brake control valve is a manually operated

valve of push-pull type.

When the valve is pushed "in"

the valve is open to supply air.

The "out" position closes

off supply air and allows delivered air to exhaust to

atmosphere, applying the spring brakes.

Valve also

features a plunger pressure sensing arrangement which

provides automatic return to "out" position when brake

system air pressure approaches low energy levels.