This chapter contains knowledge and information on various compo-
nents of your motorhome chassis. Following the guidelines and procedures
will help you to understand and operate your motorhome. Complete instruc-
tions for various components can be located in the operators manual includ-
ed in the Owners Information File box.
WARNING: When frame or other welding is involved for motorhome
repair or modification. The following precautions are required to pro-
tect electric components in the motorhome chassis.
1. Disconnect the (+) positive and (-) negative battery connection,
and any electronic control ground wires connected to the frame or
chassis.
2. Cover electronic control components and wiring to protect from
hot sparks.
3. Disconnect the wiring harness connectors at the transmission elec-
tronic control unit.
4. Do not connect welding cables to electronic control components.
5. The welder ground cable should be attached no more than 2 feet
from the part be welded.
The Executive’s Roadmaster chassis has been designed to provide
exceptional balance, handling and braking characteristics. The Roadmaster
rear engine chassis is an engine and frame unit featuring a semi-monocoque
tubular all steel frame design, providing greater structural integrity and
more uniform stress distribution. Incorporated in the Roadmaster chassis is
the exclusive air glide suspension system using eight outboard mounted air
bags and shock absorbers. Tag axle models will also incorporate two
inboard mounted air bags and shock absorbers. The design and set up is
intended to provide the smoothest ride, best handling and trouble free serv-
ice, while delivering top notch drivability. The chassis will also incorporate
a three point hydraulic leveling system or air leveling system. The
Roadmaster chassis design offers unsurpassed ease of maintenance and
service.
The towing system incorporated in the construction of the frame is rated
at 10,000 lbs towing and 1,000 lbs tongue weight.
The roadmaster’s exclusive cushion air glide suspension consists of front
and rear axles, with leading and trailing arms in a parallel four link arrange-
ment. A panhard bar is provided for each axle to control side motion. Each
axle is mounted to a wide platform H-frame which carries the coach body
on eight outboard mounted air bags (4 front and 4 rear). Each of the eight
air bags is coupled with a Bilstein gas shock absorber. The suspension con-
trol arms are attached to the frame through bushings, which require no
lubrication.
The suspension ride height is preset and will maintain the proper ride
height automatically, regardless of the load.
Chassis Information
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EXECUTIVE
7•206
INTRODUCTION
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