Towing The Semitrailer - Landoll 317D Operator's Manual


1. Landing gear legs must be fully retracted and
secured with pins before operating or moving
semitrailer.
2. If semitrailer is loaded when operating
landing gear, load must be centered on the
trailer.
3. Do not tilt semitrailer with hydraulic landing
gear on ground.
3. Activate the TRAILER TILT lever (See "Trailer Tilt
Lever" on page 3-9) "DOWN" until the semitrailer is
fully lowered. Hold semitrailer tilt lever in the down
position until hydraulic system works against the
bottomed out Hydraulic Tilt Cylinders.
4. Determine that the traveling undercarriage is
completely slid back to transport position. Hold AXLE
CONTROL lever (See "Axle Control Lever" on
page 3-9) in the transport position until hydraulic
system works against the fully extended hydraulic
telescopic axle cylinder. Shut off hydraulic power.
5. Check the operation of all lights and signals on the
semitrailer for proper response to switch positions
(stop, right turn, left turn, and clearance). Check
operation of remote function if present.
6. Check tire inflation, adjust as needed to the pressure
listed on the semitrailer VIN plate, located on the
front of the semitrailer.
7. Check tractor/semitrailer rig for air leaks. If air
leakage is found, repair the defect before
transporting.
8. Check the oil in each hub for proper level and
freedom from contamination. If hubs are
contaminated with water, dirt or some other foreign
material, clean before transporting.
9. Check tractor air pressure. Pressure must not fall
below 90 psi, even after activating brakes a couple of
times. Set parking brake and carefully remove all
wheel chocks. Set emergency brake and try pulling
forward. The semitrailer wheels must not rotate. If
semitrailer brakes do not apply, DO NOT transport
until defect, or defects, are repaired.
WARNING
OPERATING INSTRUCTIONS

Towing the Semitrailer

Driving the towing vehicle with the semitrailer coupled
behind requires constant attention to the overall length of
the combination. The "hinged-in-the-middle"
configuration of the tractor and semitrailer, load, and
weight affect performance. Turning, passing,
acceleration, braking, stopping, and backup require
special considerations. When executing steep grades or
turning tight curves, the semitrailer must not be allowed
to push the towing vehicle, or jack knifing the semitrailer
with the towing vehicle may result. Application of the
semitrailer brakes to keep the semitrailer in tow will help
prevent this pushing. Braking should begin before
descending a hill or attempting a curve, to assure control.

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.
WARNING
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