PREVOST H3-41 Maintenance Manual page 600

FRONT SUSPENSION AIR SPRINGS ADJUSTMENT (I-BEAM AXLE)
Measurement
1. Make sure that the air
system pressure is at
least 90 psi.
2. Measure the front axle
air springs clearance
(two air springs). To do
so, measure
clearance between the
support above the air
spring and the lower end
of the air spring
needed, use a small
metal ruler to reach the
lower end of the air
spring).
3. The clearance should be
in accordance with the
value of Table 1.
Air springs height adjustment
Adjust the air springs clearance with the
height control valve
4. It is necessary to adjust clearance on "fill
cycle".
a) Disconnect the link. It is equipped with
a rubber bushing that allows easy
disconnection.
b) Lower the control arm to release some
air from air springs.
c) Raise the control arm to fill the air
springs (the valve is now in "fill cycle")
and connect the link back in place.
the
(if
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