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2012 Trip
The desiccant material then removes
additional water vapor, further drying
the air.
During regeneration phase, the
regeneration valve and pressure-
controlled check valve remove water
from the desiccant bed with a backflow
of dried, expanded system air.
Air Dryer Cycle
The governor turns the compressor on when
the supply tank pressure drops below cut-in
pressure. Compressed air passes into the air
dryer at the inlet port:
Moisture-laden air and contaminants
pass through the desiccant.
Moisture is retained by the desiccant.
Moisture also collects in the base of the
dryer.
The governor turns the compressor
off when the system reaches cutout
pressure (approximately 130 psi).
The dryer purges and expels water
collected in the dryer base.
When the regeneration valve opens, the
dry system air flows back through the
dryer. A small charge of air from the
front air tank backflows through the
filter. The backflow dries the desiccant,
preparing it for the next cycle.
aIr SprIng InSpectIonS
Items listed below should be checked when
the motorhome is in for periodic maintenance.
WARNING:
Do not attempt to service the air
suspension on a motorhome with the
air spring inflated.
Inspect the Outer Diameter (OD) of the
air springs. Check for irregular wear or
heat cracking.
Inspect air lines to ensure contact does not
exist between air line and OD of the air
springs. Air lines can rub a hole in an air
spring very quickly.
Ensure there is sufficient clearance around
the complete circumference of the air
spring while at maximum diameter.
Inspect the OD of piston for buildup of
foreign materials. On a reversible sleeve
style air spring, the piston is the bottom
component of the air spring.
The correct ride height should be
maintained. All motorhomes with air
springs have a specified ride height
established by the manufacturer. This
height should be maintained within ¼
inch. This dimension can be checked with
the motorhome loaded or empty.
The leveling valves (or height control
valves) assist in ensuring the total air
spring system works as required. Clean,
inspect and replace if necessary.
Make sure to check shock absorbers for
leaking hydraulic oil and worn or broken
end connectors. If a broken shock is
found, replace it immediately. The shock
absorber will normally limit the rebound
of an air spring and keep it from over
extending.
Check the tightness of all mounting
hardware (nuts and bolts). If loose,
tighten.
Do not
over-tighten.
Cleaning:
The approved cleaning method is to use
soap and water, methyl alcohol, ethyl alcohol
or isopropyl alcohol. Unapproved cleaning
methods include all organic solvents, open
flames, abrasive and direct pressurized steam
cleaning.
HeIgHt control valveS
Height Control Valves (HCV) inflate or
deflate the air springs to maintain proper
suspension height throughout the load range.
Two height control valves located each side of
the drive axle control rear suspension height
and left or right tilt of the motorhome. A third
valve controls front suspension height. The
three valves mount to the chassis frame of the
motorhome, above the axles, with a linkage
rod connecting the valves to the axles.
Actuating components inside of the valves
are dampened to reduce valve reaction to
momentary suspension bounce and rebound.
When a constant suspension change occurs,
such as a load change or weight transfer
through a sustained corner, the valve reacts by
adding or purging air from the air springs as
needed.
The air springs are mounted to plates located
between the trailing arms and the chassis
frame rails. Ride height is the specified
distance between the mounting plates. Ride
height other than specified will compromise
ride quality and handling, and affect shock
absorber travel, drive shaft angle, as well as
various other running gear components.
Summary of Contents for Trip 2012
Page 1: ...2 0 1 2 B YHOL I D A YR A MB L E R O w n e r s Ma n u a l...
Page 13: ...Notes...
Page 45: ...40 Driv ing Safety 2 2012 Trip Weight Record Sheet...
Page 51: ...46 Driv ing Safety 2 2012 Trip Notes...
Page 138: ...133 W ater Sy stems 6 2012 Trip Water System Diagram 040487va...
Page 139: ...134 Wat er Sy stems 6 2012 Trip Notes...
Page 151: ...146 Pro p ane Sy tems 7 2012 Trip Notes...
Page 173: ...168 Ho us e Electr ical 8 2012 Trip Notes...
Page 190: ...185 Chassis Electrical 9 2012 Trip Engine No Start Flow Chart...
Page 191: ...186 Ch as s is Electr ical 9 2012 Trip Notes...
Page 237: ...232 Ch assis 10 2012 Trip Notes...