3-4 DOCK LEG (REAR LIFT) CONTROL OPERATION
DANGER
1. WHEN USING DOCK LEGS (REAR
LIFTS), THE SEMITRAILER MUST BE
KEPT LEVEL AT ALL TIMES. 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!
2. DO NOT OPERATE DOCK LEVEL-
ERS WITH INSUFFICIENT SPACE ON
BOTH SIDES OF THE SEMITRAILER.
SEMITRAILER WILL LEAN TOWARD
THE SIDE WITH THE SHORTEST CYL-
INDER. PERSONS OR EQUIPMENT
CAN BE CRUSHED BETWEEN
SEMITRAILER SIDE AND RIGID
OBJECTS.
CAUTION
TO MOVE THE UNDERCARRIAGE
BACK AND FORTH ON THE GROUND,
THE TRAILER BRAKES MUST BE RE-
LEASED AND TRUCK BRAKES SET.
TO MOVE THE TRAILER BACK AND
FORTH WHILE THE UNDERCARRIAGE
IS STATIONARY WITH THE GROUND,
THE TRAILER BRAKES MUST BE SET
AND THE TRUCK BRAKES RELEASED.
FAILURE TO FOLLOW THESE MEA-
SURES MAY RESULT IN DAMAGE TO
THE TRAILER.
CAUTION
BE SURE TO CHECK THAT THE DOCK
LEVELERS ARE IN THE TRANSPORT
POSITION BEFORE MOVING THE
SEMITRAILER. FAILURE TO GET THE
DOCK LEVELERS INTO TRANSPORT
POSITION BEFORE OPERATING CAN
CAUSE SEVERE DAMAGE TO THE
SEMITRAILER.
The
DOCK LEG (REAR LIFT) CONTROLS
are described in
.
The rear lifts are used to lift the rear of the
trailer up to six feet off the ground. Some addi-
tional lift can be obtained by pulling the undercar-
riage forward out of the pockets in the frame. Do
not pull the undercarriage more than three feet out
of the pockets when using the rear lifts or the front
of the trailer will become too light to keep the
trailer from tipping back when a load is put on the
rear. Use the front hydraulic tilt when using the
rear lifts to keep the deck level at all times.
IMPORTANT
DO NOT PUT MORE THAN A 45,000 POUND
LOAD ON THE TRAILER WHEN USING THE
REAR LIFTS. NO MORE THAN 22,500 POUNDS
IS TO BE LOADED ON THE REAR OF THE
TRAILER.
3-4.1
Operate the suspension air raise switch
to "ON" position. The suspension air raise
will have to be used to lift the trailer up
enough to rotate the cylinders all the way
around and high enough to get the footpad
weldment on.
3-4.2
Alternate using the
5th WHEEL TILT
LEVER (See Section 3-2.1)
CONTROL LEVER (See Section 3-2.4)
to
keep the deck level while pulling the under-
carriage forward. The undercarriage is to be
about two feet forward of it's rear transport
position which lifts the trailer up to gain
clearance to pull the pivot tube weldment
out.
3-4.3
When preparing for load/unload posi-
tion, unbolt the 1-8 x 3-1/4 hex head cap
screw that holds the pivot tube weldment to
the dock leveler weldment
(See Figure 3-3)
3-7
Summary of Contents for 318C
Page 3: ...MODELS 318C BOEING TRAILER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO i...
Page 8: ......
Page 12: ......
Page 32: ...3 20 FIGURE 3 6 STEPS FOR LOADING AND UNLOADING...
Page 36: ...3 24 FIGURE 3 8 REAR IMPACT GUARD AND ANTILOCK BRAKE SYSTEM...
Page 52: ...4 14 FIGURE 4 6 CHECKING AXLE ALIGNMENT FIGURE 4 7 EXAMPLES OF CAMBER...
Page 56: ...4 18 FIGURE 4 10 AXLE AND BRAKE ASSEMBLY...
Page 64: ...4 26 FIGURE 4 16 MOUNTING TIRES AND WHEELS FIGURE 4 17 STUD TIGHTENING SEQUENCE...
Page 76: ...5 10 NOTES...
