FIFTH WHEEL CONTROLS

TM 9-2320-312-10

DESCRIPTION AND USE OF OPERATOR'S CONTROLS AND INDICATORS - CONTINUED

0004 00

FIFTH WHEEL CONTROLS

KEY

CONTROL OR INDICATOR

FUNCTION

Yoke Shaft

When extended as shown, indicates fifth wheel coupler jaws are

open. When retracted, indicates jaws are locked closed and

coupling with trailer is secure.

Manual Secondary Lock Handle

Manually locks fifth wheel jaws. To engage (lock), remove hairpin

clip from handle and allow secondary lock to pivot closed. Reinstall

clip. To disengage (unlock), remove hairpin clip and pull handle

outward. While holding handle out, reinstall clip.

Release Arm

Manually unlocks fifth wheel jaws in case of failure of fifth wheel

lock control on instrument panel inside cab. With manual

secondary lock handle disengaged, pull out on release arm until

fifth wheel jaws lock in open position and release arm stays out.

0004 00-14