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Operation of Rollerbed Trailer
These 68,000#GVWR, Panel and Truss Rollerbed Trailers have a flat profile, with a Hydraulic Neck
Assembly, a sliding tandem, 6” air unlocking deck rollers, and 11R/22.5 tires. The deck rollers are spaced
approximately 2 ft. apart. 3’ on the front deck portions.
Hydraulic neck assembly
The hydraulic neck is an articulating arm with a hinged upper coupler plate. It’s designed to be used in
conjunction with the sliding tandem, ground level feature in its application. It is equipped with a self-
contained, 12 volt, DC hydraulic pump to supply lifting power in specific situations. The objective is to create a
more favorable angle of delivery by setting the trailer down to the ground, or near the ground, at the rear. This
system is designed for use by articulating the arm while the tandem axles are locked in a forward position. This
system will lift 12,500# from the initial position with the trailer tandems at the rear most position. The system
will lift more weight as the tandems are shifted forward which transfers more weight behind the tandems and
off the front of the trailer. The more you want to lift the farther forward you slide the tandems.
Hydraulic neck operation
The self contained, 12 volt, DC hydraulic pump in this system has a push-pull cable control switch to power
the system up and down and allow gravity movement. The system has 5 positions, 2 towards the frame, 2 away
from the frame and neutral. Two of the positions are power and two are gravity. The cable will activate the
motor and pump when it is slid into one of the power positions.
#1-All the way towards the operator will lift the front end up.
#2-Mid way operator will gravity the fifth wheel to the ground when the tractor is removed from the trailer
(never use #2 position, it will only allow air into the system).
#3- The middle is neutral with a ball seat that is released by pushing the red button inside the handle.
#4- Midway towards the frame and gravity will bring the front end down.
#5- All the way toward the frame will power the front end down.
NOTE: Recommend practice is to use #1 position to lift the trailer and #5 position to let the front end back
down. Hold the handle in the power position being used and immediately return to the handle to neutral the
moment the desired travel I the front is achieved. Do not allow the handle to slide into the gravity positions. Do
not allow the gravity positions to move the front end.
Truck requirements for charging battery
The trailer comes with a 12-volt battery as a power source for the hydraulic pump. A single post female
electrical receptacle has been supplied by the manufacturer for charging this battery. This receptacle is located
on the front bolster near the 7-way receptacle and is wired to the battery for charging, while the trailer is
coupled to the truck. It is necessary to have the other end of this plug wired to the truck to charge this battery.
This system requires power through a 30 AMP fuse in the fuse panel of the truck and minimum of a 6-gauge
wire leading to the plug.
Expanding the trailer (Expandables only)
1. Remove the auxiliary air line from the storage fitting-located on the driver side at the front of the rear
main frame-and connect it to the open fitting on the forward air chamber. This should immediately
disengage the frame index pins.
2. Pull the truck forward until the holes in the inner frame and the index pins on the outer frame line up
at the desired frame length.
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