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VERY IMPORTANT – PLEASE READ CAREFULLY
The Demco 5th Wheel Autoslide hitch comes assembled from the factory to help make the installation easier and quick-
er. The only prep work necessary is to bolt on the side plates. There are two different mounting systems for the Autoslide
hitch. It can be mounted on either the Premier/UL base rails or the UMS (Underbed Mounting System) base rails. Once
the mounting system has been determined there is a side rail kit available for either.
For the Premier/UL mounting system the 6003 adaptor side plate kit (shown below) will be used and for the UMS mount-
ing system the 6004 adaptor side plate kit will be used. Instructions to install both types are included in the carton with
the adaptor plates as well as with these instructions.
Also included with these instructions is a procedure for adjusting the king pin capture plates. This is the most critical
procedure that needs to be done in order to ensure the proper and safe use of the hitch. Please read and follow the in-
structions on how to adjust them VERY CAREFULLY. These instructions also include the procedure for replacing the slide
disc(s) if necessary (shown below). The Autoslide fifth wheel hitch comes with a limited five year warranty that covers
most parts and labor. The slide disc is warranted for a period of one year as it is considered a consumable part.
CRITICALLY IMPORTANT
Capture plates must be adjusted to the width of the trailer pin box in order for the automatic slide mechanism to oper-
ate and function properly. Failure to do so can result in improper alignment and may cause damage to the hitch and/or
trailer. It is best to measure the pin box width first and adjust the plates evenly on either side to 1/8” over the total width
of the pin box. This adjustment is made only once at time of initial hookup, or if a trailer with a different width pin box is
towed.
The Autoslide automatic sliding hitch is designed for short box trucks to give additional clearance between the truck’s
cab and the trailer during turning maneuvers. This hitch may allow 90° turns, but NOT IN EVERY CASE.
There are many variables that can influence the ability to make a full 90° turn, such as trailer width, sharp or rounded
trailer corners, truck cab profile. The placement of the trailer king pin box also has a part in determining the turning abil-
ity of the truck and trailer. It is always recommended, even with an automatic sliding hitch, that the trailer be equipped
with an extended pin box that projects out forward from the trailer.
Caution should always be exercised when using this or any hitch to ensure that the driver is aware of clearance between
the truck and trailer when executing turning maneuvers.
VERY IMPORTANT – PLEASE READ CAREFULLY
The 5th Wheel Autoslide hitch was designed for use with recreational style fifth wheel trailers with a 2” king
pin only. It is not designed or intended for commercial, industrial, or agricultural type towing applications or
similar type applications (i.e.- car trailer, flat bed, horse, etc.).
This hitch is designed for use with short box trucks that have a 5 1/2 foot box. There is no expressed or im-
plied guarantee that a full turn can or will be achieved with the Autoslide hitch.
It is designed to work with standard trailer pin boxes between 12” minimum to 14” maximum width. Optional
adapter plates are required for most suspension pin boxes.
Any use of the Autoslide hitch, other than its intended use, may void any manufacturer’s warranty(s), ex-
pressed or otherwise.
Please consult vehicle owner’s manual for 5th wheel towing instructions.
INTRODUCTION
WARRANTY POLICY, OPERATOR MANUALS, PARTS MANUALS & REGISTRATION
Go online to www.demco-products.com to review Demco warranty policies, operator manuals and register your Demco
product.
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