User Guide

Installation instructions
1. Slide the end of the extension into the motorhome hitch
receiver, align the holes and secure the extension to the receiver
with a hitch pin and clip (not included).
Use hitch pins with 5/8" diameters only. Hitch pins
with smaller diameters will break during towing, which
may cause the extension, and the towed vehicle with it,
to separate from the motorhome.
2. Next, insert the tow bar stinger or ball hitch mount into the
other end of the extension.
As before, secure the stinger or ball hitch mount to the
extension with a hitch pin and clip.
Note: to prevent theft or accidental release, ROADMASTER
recommends substituting a receiver hitch lock (part number
315) for at least one of the hitch pins and clips.
Do not use more than one hitch receiver extension
at any given time, for any towing application.
The extensions are not designed to be linked together.
Multiple extensions will buckle or separate when towing,
causing the towing system to fail.
Significant property damage, personal injury or even
death can result if multiple extensions are used.
Safety cables (or chains) must be used to bypass the
extension and connect the towing vehicle to the towed
vehicle frame to frame. This is required by law in many
Towing and tongue weight capacities
The maximum towing capacity and tongue weight
of 048, 058 and 070 series adaptors and the 077 dual
hitch receivers is as follows:
“Maximum towing capacity” is the maximum allowable
weight of the fully loaded vehicle, including its contents.
“Maximum tongue weight” is the maximum allowable
vertical load applied to the extension (including the weight
of any accessory attached to the extension).
Do not exceed the maximum towing capacity or
the maximum tongue weight, or the hitch receiver
extension will fail, which may cause the towed ve-
hicle to separate from the motorhome.
Maximum Maximum
towing tongue
capacity weight
048/058 series ......... 10,000 pounds ....... 400 pounds
(part numbers 048-2 to 048-10 and 058-4 to 058-10)
070 series .................. 6,000 pounds ....... 100 pounds
(part numbers 072, 070, 076)
077 series ................ 10,000 pounds ....... 400 pounds
(part numbers 077-2 to 077-10, patent number 5,884,930)
IMPORTANT NOTICE!
Safety definitions
These instructions contain information that is very impor-
tant to know and understand. This information is provided for
safety and to prevent equipment problems. To help recognize
this information, observe the following symbol:
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in property damage,
serious personal injury or even death.
Note
Refers to important information and is placed in italic type.
It is recommended that you take special notice of these
items.
Hitch receiver adaptors and ex
tensions
for the 048, 058 and 070 series of high-low hitch receiver adaptors
and the 077 series of dual hitch receivers
Installation Instructions
and User's Guide
Time Tested • Time Proven
states and provinces.
Additionally, if the extension is being added to a tow
system with safety cables already in place, be certain
that the safety cables are not too short.
Hitch extensions will extend the distance the safety
cables must now reach. If the safety cables are too
short, severe non-warranty damage will occur to the
safety cables, tow bar or other components of the tow-
ing system.
Damage to the motorhome, and damage to or loss of
the towed vehicle, may also occur.
After attaching the hitch receiver extension make certain
there is enough slack in the safety cables at the motorhome
to allow for sharp turns — position the towed vehicle at a
45 degree angle to the motorhome. Then measure along
the outside contour of the tow bar from the safety cable
connection point at the hitch receiver to the safety cable
connection point at the towed vehicle.
If the safety cables are shorter than this distance,
you must either: 1) add safety cable extensions (safety
cable extensions in a wide variety of lengths are avail-
able from ROADMASTER); or 2) purchase longer safety
cables.
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