Landoll 440B Series, Operator'S Manual, Page: 30 / 84

3-18 F-1013-1118
OPERATING INSTRUCTIONS
TABLE OF CONTENTS
Dock Leveler Control
Operation (Option)

DANGER

DANGER

CAUTION
1. The Dock Leveler controls are located at the bottom
of the control panel
( See Figure 3-4 .) There are two
controls which adjust the height of the dock leveler
cylinders. The front-most control adjusts the cylinder
on the driver’s or street side of the semitrailer. The
rear-most control adjusts the cylinder on the
curb-side of the semitrailer. Both controls have three
positions.
2. If your semitrailer is equipped with optional dock
leveler hydraulics, these may be used to level the
rear of the semitrailer to a loading dock. The dock
leveler pair is located at the rear of the trailer
between the axles
( See Figure 3-11 .)
3. Park the semitrailer in front of the dock according to
instructions in
“Parking the Trailer” on page 3-7 .
4. Engage hydraulic power supply. Use the Dock
Leveler controls to raise the rear corners of the
semitrailer as needed. Operate both controls at the
same time. Push “IN” the Dock Leveler controls to
raise the semitrailer deck (to extend the dock leveler
legs). PULL “OUT” the Dock Leveler controls to lower
the semitrailer deck (to retract the semitrailer legs)
( See Table 3-5 .) Use one control to level adjust the
semitrailer bed.
Table 3-5: Dock Leveler Controls
IMPORTANT
Be sure to retract the dock levelers when finished.
Pull “OUT” on the dock leveler controls - at the same
time - to retract the dock leveler legs and lower the
semitrailer bed. If the deck starts to become unlevel,
use one control knob to level the deck.
When using dock levelers, the semitrailer must
be kept level at all times. Do not lower the parking
stands. Loads being placed on the semitrailer
must be kept centered on the semitrailer. An
unlevel semitrailer may allow a load to slide,
causing injury or death to anyone near the load!
1. Do not operate dock levelers with
undercarriage out of rear pockets.
2. Do not operate dock levelers with insufficient
space on both sides of the semitrailer.
Semitrailer will lean toward the side with the
shortest cylinder. Persons or equipment can
be crushed between semitrailer side and rigid
objects.
3. Tractor park brakes must be set when using
dock levelers.
Be sure to check that the dock levelers are fully
retracted before moving the semitrailer. Failure to
retract the dock levelers before operating can
cause severe damage to the semitrailer.
DOCK LEVELER CONTROLS
PULL OUT
When the control for either cylinder is
pushed out, the corresponding dock
leveler cylinder retracts and trailer bed
is lowered.
CENTER
This position is neutral for either
control. When either control is in this
position, there is no effect on either
cylinder.
PUSH IN
When the control for either cylinder is
pushed in, the corresponding dock
leveler cylinder extends and trailer bed
is raised.