PREVOST H3-45 VIP Owner's Manual page 163

PROBLEM
Slide- out does not retract or
extend when depressing the
control switch.
Slide-out is not straight once
retracted or during retracting
or extending operation.
Slide- out moves out slightly
when vehicle is traveling.
Slide-out moves when vehicle
is moving.
Slide-out moves when vehicle
is moving.
Slide-out retracts or extends
with difficultly.
Slide-out oscillates vertically
when retracting or extending.
Slide- out vibrating or noisy
when extending or retracting.
Slide-out does not retract up
to its full "in" position.
CAUSE
Electrical motor failure;
Speed reduction
failure;
Security pin still engaged in
receptacle;
Broken rack tooth;
Faulty rack attachment;
Faulty shaft key at speed
reduction gearbox
coupling;
Shaft breaking;
Flange bearing attachment
loose.
Lower "in limit" stoppers are not
leaning against the structure at
the moment when the "in limit"
sensor detects the magnet;
Inflatable seal not inflated
Inflatable seal not inflated
Foreign matter accumulated in
the linear bearing;
Linear bearing balls hardened
due to a too heavy load;
Linear bearing mounting bolts
loose;
Worn-out anti-friction coating on
wiper seal around slide-out;
Lower acetal plastic
rubbing against rail;
Interference between
exterior extrusion and
vehicle upper horizontal
member above the slide-out;
PA-1619 Owner's Manual H3-45 VIP
CORRECTIVE ACTION
Replace motor.
Inspect gearbox components, particularly:
gearbox
bronze wheel or first reduction stage output
shaft. Replace damaged components.
Disengage pin and check if air cylinder is
damaged.
Replace rack.
Tighten mounting bolts, apply proper torque
and use "Loctite Threadlocker" (replace rack if
necessary).
Replace key or component having a damaged
or jaw
keyway.
Replace shaft.
Reposition shaft and tighten flange bearing
mounting bolts.
Adjust the sensor position in order to have
contact of the stoppers against the structure
at the time when the system stops the slide-
out retraction.
Adjust the sensor position in order to have
contact of the stoppers against the structure
at the time when the system stops the slide-
out retraction.
Check seal condition and seal air supply
system.
Inspect the linear bearing end seals to see if
they are in good condition. If not, replace the
end seals and clean the inside of linear
bearing.
If balls clearance is excessive, replace linear
bearing.
Tighten mounting bolts.
Replace wiper seal.
block Remove lower acetal plastic block and
machine down 1mm (0.039").
the
the Check for outer wiper seal lip straightness on
the slide-out roof.
Other Features 5-41