PREVOST Le Mirage XL II Ultimate, Service Manual

Page: 24 / 53

XL2 SLIDE-OUT SERVICE MANUAL
system" section from the Prevost maintenance
manual.
INFLATABLE SEAL CIRCUIT
The efficiency of the seal could be affected by
impurities, such as white powder in the
pneumatic control valve. It is recommended to
inspect the inflatable seal control components
once a year to prevent malfunction. In this case,
remove the seal valves and clean the interior
valve components using a compressed air
nozzle. Do the same thing with the vacuum
generators.
The inflatable seal pressure must be set from 7
to 10 psi maximum. It is recommended to check
the inflatable seal pressure once a month to
ensure sealing efficiency and prevent any
infiltration from outside.
VACUUM SWITCH
The vacuum switch used to control the vacuum
generator valve may have to be adjusted if
malfunction is suspected. The vacuum is factory
pre-set to 16" Hg. To check the vacuum set
point, use a vacuum gage adapter at the seal
valve output. Operate the slide-out and check
the maximum vacuum value. If needed, adjust
the vacuum set point with the adjustment screw
located between the electrical tab connectors.
Turn the screw clockwise to lower the vacuum
set point and counterclockwise to raise it.
12.4 SEAL
Note: Refer to the slide-out parts manual for
descriptions of the sealant and adhesives used.
The slide-out sealing device is used to prevent
any type of infiltration that may occur between
the structure body and the slide-out itself. It is
composed of an inflatable seal which is used as
a primary sealing device for both retracted and
extended slide-out position and a wiper seal as a
secondary sealing device which is used to wipe
water out and to ensure sealing during slide-out
movement.
The front slide-out inflatable seal air inlet is
located in the third baggage compartment on the
driver side close to the front slide-out electric
motor (figure 31). The rear slide-out inflatable
seal air inlet is located on the structure post
facing the rear of the vehicle (figure 32).
INFLATABLE SEAL
WIPER SEAL
ADHESIVE
TAPE
EXTERIOR
PANEL
FIGURE
30 :
SEAL ASSEMBLY
The inflatable seal deflation is done each time
the slide-out is moved. The seal valve is
activated (seal deflated) during the slide-out
movement and stays activated as long as the
slide-out is not completely retracted or extended
and as long as
the ignition switch is turned
on .
GUIDE TUBE
FIGURE
31 :
FRONT SLIDE
-
OUT INFLATABLE SEAL AIR INLET
FIGURE
32 :
REAR SLIDE
-
OUT INFLATABLE SEAL AIR INLET
Caution: Make sure the inflatable seal is
deflated when manually moving the slide-out
during service maintenance. The normally
opened seal valve supplies air pressure inside
the seal if the control module is switched off.
When the slide-out is not completely retracted or
extended, damage may occur to the exterior
panels.
R3 24 May 3, 2002