TM 5-2420-232-10
0004
CONTROLS AND INDICATORS INSIDE CAB CONTINUED
KEY
COMPONENT
DESCRIPTION
27
Trailer air supply valve
The valve operating knob is colored red. It operates the trailer air
supply. Push the knob to supply air to the trailer. Pull the knob to
exhaust the trailer supply.
28
Parking brake operating valve
The valve operating knob is colored yellow. It operates the parking
brake. Pull the knob to engage the parking brake. To release the
parking brake, push the knob down.
29
Independent trailer brake lever
The lever is colored black. It operates the trailer braking system. Pull
the lever towards you to engage the trailer brakes. Release the lever
to release the trailer brakes (this lever has no locking mechanism to
hold the trailer brakes in the engaged position). When a trailer is
attached and the machine is parked, the trailer brakes will be
engaged by the (red) parking brake lever.
30
Parking brake test switch
Used when testing the parking brake (WP 0005).
Change 1
0004-6
