Is your vehicles air suspension rising slowly, noisily, or perhaps failing to rise at all?
EAS fault message, "Warning do not exceed 35 mph" message, lights just flashing on height adjustment switch?
Hard fault stored, vehicle on bump stops and not rising, taking too long to reach pressure, excessive compressor running?
Leak from EAS system but no visible leaks when testing components, vehicle on bump stops? Slow leak? Complete failure of EAS system?
The likely cause of the faults noted above and most common cause is a worn piston seal and or liner within the air suspensions compressor unit. Coupled with saturation of the filters in the compressors
filter unit. This results in reduction of compressor output and triggers vehicle faults as well as
extending the time taken to lift the vehicle.
The diaphragm and or O-rings within the valve block can also wear and can lead to the compressor overworking causing complete EAS failure, we always recommend replacing the diaphragm seal when replacing the o-rings in the valve block as both can cause leaks and EAS failure.
Our complete kit includes all needed to restore your compressor to full health. Our kit includes a
new improved design piston seal constructed to the finest of tolerances from
improved materials to restore full output.
A replacement piston liner to replace your scored or damaged liner.
Full filter replacement kit to allow you to replace all filters,
the original filters saturate quickly and drastically effect output, our improved replacements will
solve this problem.
Fit our Viton O-rings and cure those valve block leaks, importantly our O-rings are made from Viton 75, this material is suitable for the elevated and varying temperature range which the valve block endures. Viton rubber also has extremely good wear resistance far outlasting Silicone and Buna O-rings. Beware of cheap kits with Silicone and Buna O-rings we only ever use Viton.
Fit our diaphragm seal, this is made in the same way as the OEM seal, beware of aftermarket designs that cause the compressor to run on and burn out, this part is precision made to prevent this.
Range Rover EAS air suspension compressor pump seal and liner repair kit ANR3731 Installation Instructions - YouTube
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Our kit will only repair the original Dunlop compressor illustrated above.
If the compressor has been changed in vehicles life to a different compressor our kit may not repair this.
It is worthwhile checking the compressor is as illustrated (see instructions on how to access compressor)
Associated part numbers:
0180A-EP-02, ANR3731, ANR3731G.
Valveblock part numbers:
E311660030 , 38769609
1x Piston seal
1x Piston liner
2x Compressor head seals
1x Complete filter kit including o-rings
1x Complete Valveblock o-ring overhaul kit consisting of:
3x Valve Seals
1x Diaphragm Solenoid Housing Base Seal
18x Diaphragm Solenoid Base Seals
7x Solenoid Plunger Seals
4x Port Seals
16x Airline Seals
2x Solenoid Base Seals
1x Diaphragm seal