Section 10 --- Chassis Information
Cayman 2005
320
The Roadmaster chassis design provides exceptional balance, handling and braking characteristics.
The Roadmaster Rails chassis is an engine and frame unit featuring a C channel all steel frame design,
providing greater structural integrity and uniform stress distribution. Incorporated in the Roadmaster
chassis is an air suspension system using four air bags and Monroe gas shock absorbers. The design and
set up is intended to provide the smoothest ride, best handling and trouble free service while delivering
excellent drivability. The Roadmaster Rails chassis is equipped with a Cummins diesel engine. The diesel
engine utilizes an electronic injection system to supply fuel to the cylinders. This electronic fuel control
allows for precise fuel delivery resulting in efficient operation. The Allison 2500 MH transmission is
matched to the engine. This is an electronically controlled automatic transmission using the Shift-by-
Wire system. Finally the chassis is equipped with a three-point hydraulic leveling system to help min-
imize site selection and provide comfort when camping. The Roadmaster chassis design offers unsur-
passed ease of maintenance and service.
The towing system rating incorporated in the construction of the frame is 4000 lbs. towing and
400 lbs. tongue weight.
Roadmaster's exclusive rails chassis, with air suspension, consists of front and rear axles with trailing
links. An air compressor mounted directly to the engine provides air pressure for the air suspension sys-
tem. Each of the four air bags couples with a gas shock absorber to dampen suspension movement. The
air bags themselves provide no lateral support to the suspension. This is accomplished using a panhard
bar on each axle to control side motion. Each axle mounts to the trailing links that are connected to the
chassis. While the suspension itself has no maintenance requirements, an annual inspection of the sus-
pension system should be performed with special attention to tightness of fasteners and component wear.
The suspension control arms attach to the frame through bushings, which require no lubrication. The
preset suspension ride height automatically maintains proper suspension height throughout the load
range.
100168b
Tag located on the curbside, from behind front wheel, and in generator compartment.
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