BENDIX BW1596 Fascicule

®

CLAMPING

STUD

VALVE

O-RING

VALVE SEATS

The C-5

™

 cut-out cock is a manually operated on-off valve.

Cut-out cocks are used in an air brake system where a
manual shut off air lines is desirable such as in trailer and
trailer dolly systems.

Note that in Figure 1 the C-5

™

 cut-out cock uses a metal

ball valve between two valve seats. Rotating the ball valve
90° will either open or close the air passage through the
cut-out cock.

Every six months, 1800 operating hours, or 50,000 miles
the cut-out cock should be checked for leakage around the
ball valve and past the stem o-ring. Once each year, 3600
hours, or 100,000 miles the C-5

™

 cut-out cock should be

disassembled, cleaned, and inspected for signs of wear or
deterioration.

With the valve in the closed position and air pressure present
on either side, a soap solution is applied to the side open to
atmosphere. A leakage of not more than a 1" bubble in 5
seconds is permitted.

NOTE: Leakage should be checked in each direction since

it is possible for the valve to seal in one direction
but not the other.

If the cut-out cock leaks excessively or if wear or deterioration
is noted during routine maintenance, it is recommended that
it be replaced with a new unit or repaired with genuine Bendix
parts.

Block and hold vehicle by means other than air brakes.
Completely drain all reservoirs. Disconnect air lines from
both sides of the cut-out cock.

BODY

REDUCER

BUSHING

CAP NUT

OPERATING HANDLE

LOCK NUT

STEM

STEM

WASHER

O-RING