3-8
F-1013-1118
OPERATING INSTRUCTIONS
WARNING
Uncoupling Towing Vehicle from
Semitrailer
1.
Park the semitrailer according to instructions in
“Parking the Trailer” on page 3-7
.
2.
Lower the landing gear:
WARNING
CAUTION
a.
Lower the optional pin drop landing gear to the
ground. Hydraulically raise front end of
semitrailer until next hole in landing gear is
available. Pin through both inner and outer legs
of landing gear. Hydraulically lower semitrailer
onto legs.
b.
For crank landing gear, turn crank handle
clockwise to extend. Using high gear, lower the
landing gear until the pads make contact with the
ground. To reduce the load on the fifth wheel,
shift to low gear and crank an additional four to
eight turns. Leave the landing gear engaged in
low gear.
c.
For hydraulic landing gear, extend landing gear
with knob on Control Panel until the same weight
of the trailer is on the landing gear. Extend legs
until the hole in inner leg lines up with hole in
outer leg. Secure each leg by inserting a pin.
3.
Disconnect the emergency and service air lines and
attach them to the tractor gladhand holders. If
present, install dummy gladhands on trailer
couplings.
4.
Disconnect the 7-pole cable and hydraulic lines from
the semitrailer and store with the tractor.
5.
Pull the tractor fifth wheel plate latch release knob.
6.
Attempt to pull the tractor forward. If the tractor
uncouples, verify all service lines are disconnected
and semitrailer wheels are chocked. If tractor does
not disconnect, repeat
and
7.
Pull the tractor away from the semitrailer.
When leaving the semitrailer unattended,
position all hydraulic controls to the neutral or
“off” position and shut off the hydraulic engine
power supply, or disconnect the tractor hydraulic
hook-up.
With pin drop or hydraulic landing gear be sure to
secure each leg with pin before leaving
semitrailer unattended.
Always grip crank handle securely with both
hands. Never shift landing gear under load. Never
leave the gears in neutral or the crank unsecured.