Chassis - Introduction - Holiday Navigator 2003 Owner's Manual

This section contains knowledge and information on various components of
the motorhome chassis. Following the guidelines and procedures will help you
to understand and operate your motorhome. Complete instructions for engine
and transmission are located in their respective operators manual included in
the Owner's Information File box.
WARNING: When frame or other welding is involved for
motorhome repair or modification, the following precautions
are required to protect electrical 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
electronic control unit.
4. Do not connect welding cables to electronic control components.
5. Attach the welding ground cable no more than 2 feet from the
part to be welded.
The Roadmaster S-Series chassis design provides exceptional balance,
handling and braking characteristics. The Roadmaster S-Series chassis is an
engine and frame unit featuring a semi-monocoque tubular all steel frame
design, providing greater structural integrity and 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 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 service while delivering top notch drivability. The chassis has
either a three point hydraulic leveling system or air leveling system. The
Roadmaster chassis design offers unsurpassed ease of maintenance and service.
The towing system rating incorporated in the construction of the frame is
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 arrangement.
A panhard bar on each axle controls side motion. Each axle mounts to a wide
platform H-frame that carries the coach body on eight outboard mounted air
bags (4 front and 4 rear). The tag axle uses two in-board mounted air bags.
Each air bag couples with a Bilstein gas shock absorber. The suspension
control arms attach to the frame through bushings, which require no lubrication.
The preset suspension ride height automatically maintains the proper suspension
height throughout the load range.
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Chassis Information
CHASSIS
- INTRODUCTION
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