Monaco 2009 Knight, Руководство пользователя

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20
2009
K
night
Chassis Information - 1
0
Desiccant-Type Air Dryer
Warm, humid air from the compressor
condenses into either water or water
vapor before entering the air dryer.
A desiccant-type air dryer protects the
motorhome air brake system by drying
moisture-laden air before it passes
through the air reservoirs and into the
brake system.
Water collects in the base of the dryer
when warm air condenses the water
before it enters the dryer, or inside of
the dryer before the water reaches the
desiccant.
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 135 psi).
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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.
NOTE
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.
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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 air springs to maintain proper
suspension height throughout the load range.
Two Height Control Valves are installed at
the rear drive axle to control rear suspension
height and left or right tilt of the motorhome.
A separate HCV is installed to control front
suspension height. The three HCVs mount to
the main frame of the motorhome, above the
axles, with a linkage rod connecting the valve
to the axle.
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