Introduction - Monaco 2002 Diplomat Service Manual

This section contains information on various components of the
motorhome chassis. Following the guidelines and procedures will assist in
understanding and operating the motorhome. Complete instructions for
various components can be located in the product manufacturer's operator
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 the 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
electronic control unit.
4. Do not connect welding cables to electronic control components.
5. The welding ground cable should be attached no more than
two feet from the part to be welded.
The Roadmaster Raised Rail chassis has been designed to provide exceptional
balance, handling and braking characteristics. Increased storage space and
the highest GVWR are a few benefits from this chassis. The Roadmaster
Raised Rail chassis design offers unsurpassed ease of maintenance and service.
The rear engine chassis, or "Pusher", is an engine and frame unit featuring a
C-Channel main frame rail design and all tubular steel frame design, providing
greater structural integrity and more uniform stress distribution. This integral
design offers strength, stability and durability in the motorhome.
Incorporated in the Roadmaster chassis is the exclusive air glide suspension
system using eight outboard mounted air bags and shock absorbers. This type
of suspension system is a tuneable system. 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 is provided for each
axle to control side motion. Each axle is mounted to a wide platform H-
frame that 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 gas/oil shock
absorber. The suspension control 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.
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
can also incorporate a hitch receiver that offers the ability to tow either a
vehicle or trailer. A hydraulic leveling system can be further incorporated in
the construction of the frame.
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D I P L O M A T
Chassis Information

INTRODUCTION

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