Part 90555288 90555293
Number Fully Automatic Manual Lift
Automatically based Automatically based
on Ps1 setting and on Ps1 setting and
load of vehicle load of vehicle
Automatically based Manually with use
on Ps2 setting and of the control button
load of vehicle
With use of manual With use of
override components control button
3/8” PTC 3/8” PTC
Lower
Axle
Lift
Axle
Manual
Operation
Port
Fitting Size
The ILAS-III Valve is used for the lowering and lifting of one or multiple axles on an air ride
suspension depending on the load applied to the vehicle.
Assembly
• Use the provided holes to install the ILAS-III Valve. Make sure the valve is
mounted in a location that is protected from water on the road and high
pressure cleaning. The fittings on the valve must point downward. Refer to
Figure 1 and Figure 3.
Note: If a high pressure washer is used to clean the vehicle, a distance of at least
50cm (20”) should be used.
• The control button (manual version) should be easily accessible and not
protrude over the edge of the vehicle when pulled out.
• The valve should also be protected from unintentional activation.
• If the valve will be painted or coated, avoid painting the exhaust vent hole and
rubber boot for the control button (manual version).
• Check and record the lowering pressure on the valve or in an area visible
from the lift axle(s).
Port description:
• 1 = Supply
• 11 = Suspension Air Bags
• 21,22 = Lift Axle Suspension Air Bags
• 23 = Lift Bags
• 3 = Exhaust
Warning:
Keep area of lift axle clear. The axle(s) will automatically lower when the lowering
pressure is reached.
Installation Instructions for the ILAS-III Valve
L31227 (94130007) Rev. 11/17
Installation
Guide
90555293
90555288
General Information
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