3-16
F-844-0117
OPERATING INSTRUCTIONS
Operating Instructions (835
Construction) (Curbside
Bolster)
Normal Highway Operation
1.
Position control handle at normal ride.
Loaded trailer may be operated 1”
above or below normal ride position.
2.
Empty trailer with lifted 3rd axle may be operated at
2” above normal ride position for additional tire
clearance for lift axle.
3.
Full up or down only for temporary use at 5 mph.
Figure 3-9: Air Raise/Lower Decal Location
(835E Construction)
Lift Axle Operation (Option)
(Used on Rigid Three Axle
Frame)
The manual ON/OFF valve, when activated, sends a
pneumatic signal to the pilot valves. These valves
exhaust the air suspension air springs and inflate the air
lift air springs causing the axle to lift.
Suspension Operation (Axle
Down)
1.
With the manual ON/OFF valve in the “OFF” position,
the air suspension system is in operating position.
Axle Lift Operation (Axle Up)
1.
With the manual ON/OFF valve in the “ON” position,
the axle lift is in operating position and raises the
axle.
CAUTION
WARNING
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Do not overload axle.
The lift axle may be operated in the raised
position as follows:
1.
When vehicle is unloaded or partially loaded
as long as adjacent axles are not overloaded.
2.
When vehicle is loaded and off highway, but
at a reduced and safe speed.
3.
When vehicle is loaded and on highway, but
as a government law allows for turning
purposes and then at reduced and safe
speed.
4.
Whenever it is necessary for reasons of
safety to maintain traction or sufficient load
on other vehicle driving, steering, braking, or
cornering axles.
Failure to adhere to these directions could result
in overload fines, premature equipment failure
and/or vehicle accident.
