OPERATING INSTRUCTIONS
3-19
Dock Leveler Control Operation
(Option)
DANGER
DANGER
CAUTION
2.
The
DOCK LEVELER CONTROLS
are located on
the right side of the hydraulic control panel
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.
3.
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
4.
Park the semitrailer in front of the dock according to
instructions in
“Parking the Trailer” on page 3-7.
5.
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. Pull up the
DOCK LEVELER
CONTROLS
to raise the semitrailer deck (to extend
the dock leveler legs). Push down the
DOCK
LEVELER CONTROLS
to lower the semitrailer deck
(to retract the semitrailer legs). Use one control to
level adjust the semitrailer bed.
IMPORTANT
Be sure to retract the dock levelers when finished.
Push down 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 lever 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.
DOWN
When the control for either cylinder is
pushed down, 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.
UP
When the control for either cylinder is
pulled up, the corresponding dock
leveler cylinder extends and trailer bed
is raised.
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...
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