OPERATING INSTRUCTIONS
3-15
Work Light (Option)
T
he
WORK LIGHT SWITCH
is on the hydraulic control
panel
It illuminates the hydraulic
control panel and controls the optional work lights
mounted on the bulkhead. The work lights illuminate the
upper deck.
Air Ride Operation
1.
Trailer air pressure must be maintained above 90 PSI
before operating.
PROTECTION VALVES
are used
to maintain 65 PSI air brake pressure during
suspension or remote system air loss.
2.
The semitrailer is equipped with a ride height control
valve located on rear axle.
CAUTION
Manual Height Control
Operating Instructions (825,
835, & 845 Ag) (Tail Plate)
Normal Highway Operation
When vehicle is in motion, switch must be in “OFF”
position for normal height control valve automatic
operation
Raising or Lowering
To raise or lower vehicle, place switch in “ON” position
and regulate the height of the vehicle with the hand valve
Figure 3-8: Air Ride Switch (825E/835E/845E Ag)
If suspension air loss should occur, completely
deflate suspension and temporarily operate on
the air springs internal rubber bumpers. Carefully
proceed to the nearest semitrailer service facility.
To deflate the air suspension, disconnect the
lower connection on the linkage of the automatic
air valves. Rotate the valve control arms down
about 45
o
to exhaust the air. To restore to normal
operation, simply reverse the procedure.
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