Unloading The 331 Over-The-Cab Deck; Rear Impact Guard System - Landoll 334C Operator's Manual

3-20 UNLOADING THE 331 OVER-THE-CAB DECK

3-20.1 Lower the front of the semitrailer to the
transport position.
3-20.2 Unlock and lower the front arm as far
down as it will go.
3-20.3 Unlock and adjust the rear arm until the
upper deck is the same elevation as the
over-the cab deck.
3-20.4 Put down the wheel stops on the front
of the 334C upper deck.
3-20.5 Slide the over-the-cab deck back to 1/2"
from the 334C upper deck.
3-20.6 Insure that the winch cables are firmly
attached to the vehicles and sufficient ten-
sion is on the cables so load securing chains
can be safely removed.

3-21 REAR IMPACT GUARD SYSTEM

Vehicle standards FMVSS No. 224, Rear Im-
pact Protection, requires all 334 Series trailers
manufactured after January 26, 1998 to be
equipped with a rear impact guard certified by the
manufacturer as meeting FMVSS No. 223, Rear
Impact Guards. The guard, or bumper, (See Fig-
ure -), meets the following requirements:
•
minimum of 4 inches vertical height
•
extend laterally to within 4 inches of the
sides of the trailer
•
ground clearance of no more than 22
inches
•
placed no more than 12 inches from the
rear of the trailer.
•
capable to deflect 5 inches.
3-20.7 Reel out winch #1 (See Figure 3-6) to
allow the vehicle to move off of the Over-
the-cab deck and onto the trailer upper deck.
3-20.8 After the vehicle is completely on the
trailer deck, secure the vehicle so winch #1
(See Figure 3-6) can be disconnected and
winch #2 (See Figure 3-6) can be connected
to the vehicle.
3-20.9 Secure winch #1 cable to the over-the-
cab deck.
3-20.10 Slide the over-the-cab deck forward to
transport position.
3-20.11 Follow the procedure for unloading the
trailer upper deck (See Section 3-19).
3-20.12 Prepare trailer for transport.
3-20.13 Disengage the P.T.O. system of the
tractor.
The standard also specifies minimum force and
energy absorption requirements for the guard. A
DOT decal certifies that the guard meets FMVSS
No. 223 and 224 standards. The decal is placed
and must remain at all times on the forward fac-
ing surface of the guard, 12 inches inboard of the
curb side and of the guard. See Figure - for loca-
tion of decals.
Replace any component that does not allow
the above minimum requirements to be met. Any
hardware that holds the rear impact guard and be-
comes damaged or becomes loose shall be re-
moved and replaced. The 3/4" grade 8 screws that
hold the bumper energy pack shall be loctited and
torqued to 280 ft.-lbs.
DANGER
ALWAYS CHECK THE CONDITION OF
THE REAR IMPACT GUARD SYSTEM.
IF GUARD SYSTEM HAS BEEN DAM-
AGED, IT MUST BE REPLACED. FAIL-
URE TO MAINTAIN GUARD SYSTEM
MAY RESULT IN INJURY OR DEATH
TO OTHERS.
3-19