3-8
F-543-1011 Edition
OPERATING INSTRUCTIONS
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
a.
Lower the 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.
CAUTION
b.
For optional 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 lever on Engine 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 lever.
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
7.
Pull the tractor away from the semitrailer.
DANGER
Trailer Tilt Lever
The
TRAILER TILT
lever is located
on the driver’s side of
the upper deck
It is the front
lever and has three positions:
Axle Control Lever
The
AXLE CONTROL
lever
is located on the control panel. It is the third lever with
three positions:
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.
Always check behind and under the truck and
semitrailer for persons or objects before moving.
Failure to check can lead to serious personal
injury or death to others, or damage to property.
UP
In this position, the front end of the
semitrailer rises to the load position.
CENTER
This is the neutral position. The
semitrailer stays in its current position.
DOWN
In this position, the front end of the
semitrailer lowers to the transport
position.
LOAD
In this position, the undercarriage
slides forward for
.
CENTER
This is the neutral position.
TRANSPORT
In this position, the undercarriage
slides to the rear. The undercarriage
must be in the rear-most position for
transport.
Summary of Contents for 425B Series
Page 2: ......
Page 6: ...iv F 543 1011 Edition...
Page 14: ...2 6 F 543 1011 Edition STANDARD SPECIFICATIONS...
Page 26: ...3 12 F 543 1011 Edition OPERATING INSTRUCTIONS Figure 3 7 Steps for Loading and Unloading...
Page 32: ...3 18 F 543 1011 Edition OPERATING INSTRUCTIONS Figure 3 12 Dock Leveler Operation...
Page 61: ...MAINTENANCE AND LUBRICATION 4 21 Figure 4 13 Axle and Brake Assembly...
Page 76: ...4 36 F 543 1011 Edition MAINTENANCE AND LUBRICATION Page Intentionally Blank...
Page 86: ...5 10 F 543 1011 Edition TROUBLESHOOTING GUIDE...
Page 87: ......
