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side near the middle of the trailer. To operate; remove the pin on the lock bars. This will divide the lock bars.
You may then use the roller lock valve to unlock the rear half of the rollers only.
NOTE: The hydraulic neck can be used when split unloading to lift the front end of the trailer, thus
transferring weight to the tractor to maintain traction.
1. Get back in the truck and shift into the forward position. Apply air to the truck and trailer by releasing
the parking brakes. This will also unlock the roller locking system in about 5 to 7 seconds.
2. With the tractor in a forward gear and the parking brake released, look in the mirror on the truck you
can watch the product stat to roll off. As product starts to roll, immediately drive forward until you have
cleared the package completely. Driving forward as the product rolls off accomplishes two things in this
step. The first is that eliminate the product’s momentum as it is rolling off. This is the key to damage-
free delivery. If the truck and trailer are pulling forward when the rollers unlock, the products has very
little momentum, while rolling back because you have pulled put from under it. (When split unloading
and the load is rolling off the trailer, the load should be far enough to the rear that damage shouldn’t be
a concern.) Second, by doing this successfully you greatly reduce the possibility of high centering the
power unit when pulling forward.
NOTE: The Hydraulic Neck system should be in the raised position the entire time procedure is taking place.
This ensures that the load is distributed between the trailer tires and the tractor coupler, which prevents the
rear end of the trailer lifting the tractor by pivoting on the trailer tires. If you lose traction, use the hydraulic
pump to lift the front of the trailer and transfer weight to the truck as explained previously.
3. Now that the product is on the ground and the trailer is out from under the load, you may put the
trailer back into road position.
4. Lower the front of the trailer by sliding the hydraulic cable into position #4, gravity down. When the
trailer is completely down, slide the hydraulic cable into position #5 to tighten the coupler plate right
against the main frame of the trailer.
NOTE: DO NOT overpower the hydraulic system when tightening the coupler. Damage may occur to the
hydraulic arm and cylinder mounts by over powering the system.
5. Follow the procedures for positioning the slide bogey. Unlock the bogey with the air valve. Re-enter the
truck cab, pull the hand valve and lock the trailer brakes while driving forward. Position the bogey in
the rear position. Lock the slide box in that position using the air valve.
NOTE: Check to make sure the slide bogey is locked in place. You may have to rock the trailer back and
forth to engage all four pins.
6. Lower rear bumper back to road position by closing the ball valve.
NOTE: DO NOT hit the slide bogey too hard when sliding back to the road position. This may cause
considerable damage and IS NOT covered under warranty if evidence of abuse is apparent.
7. If the trailer is an expandable, close the trailer to a legal length for traveling by following the Expanding
Procedures.
NOTE: Check to make sure both frame index pins are locked in place.
8. Lock the rollers by closing the roller lock valves. Spin each roller to replace the roller locking pins.
9. If this was a split load, replace the pin in the lock bars.
Bad job site conditions
In muddy or rough terrain, power the hydraulic pump and lift front of the trailer to transfer weight on to the
tractor (refer to the section on the Hydraulic Neck.) It is necessary to lock the slider bogey in the forward
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