BENDIX SD-03-821 Manuel D’Utilisation

®

The Bendix

®

 TC-6

™

 trailer control brake valve is normally

used to operate the trailer brakes independently of the tractor
brakes. It may be used, however, wherever a hand controlled
pressure graduation function is desired.

The TC-6

™

 valve is handle operated and is designed for panel

or dog house mounting.

The TC-6

™

 trailer control brake valve is not designed for use

as a parking brake control and should never be used to
hold the brakes applied when the operator leaves the vehicle.

When the handle (item 10) is pulled through its 75° arc, the
roller cam (item 11) is rotated accordingly. The cam action
forces the cam follower (item 9) downward, compressing
the graduating spring (item 6) and creating a force on the
plunger (item 12) which depresses the inlet valve (item 2)
and delivers air under pressure to the delivery port.

As delivery pressure builds up in the delivery port, it is also
effective under the plunger (12) causing it to balance the
force of the graduating spring (6) until the inlet valve (2) is
seated against its seat in the body and is also seated against
the plunger (12), thus preventing the delivery air from
exhausting through the center of the plunger (12),
maintaining the desired pressure in the delivery line.

When the handle is released or moved to its release position,
the cam follower (9) is permitted to rise, opening the exhaust
passage and allowing the air pressure in the delivery line to
exhaust out the exhaust port.

Important:  Review the Bendix Warranty Policy before
performing any intrusive maintenance procedures. A warranty
may be voided if intrusive maintenance is performed during
the warranty period.

EXHAUST

DELIVERY

SUPPLY

KNOB

13

11

14

8

10

9

7

6

12
5

15

4

2

3

1

16