Emergency Air Suspension Inflation Device

This is your emergency Inflation Device.

Keep it in your glove box until your suspension lets you down.

 

DO NOT OVER INFLATE THE AIR SPRING BAGS.

The factory fitted airlines have a  push-fit connection into the valve block.

Push-fit connections - If you are unsure how to use these push-fit connections, please practice this technique on one of the Y pieces before attempting any fitting on your vehicle.

To remove an airline - Using a flat blade screwdriver or your fingertip lightly push inwards on the collar surrounding the airline while at the same time lightly pulling outwards on the airline. 

To insert an airline - make sure the airline is clean and not pinched, scored or deformed. Push the airline inwards approximately 12mm (you will feel a slight click).

Pinched, scored or deformed airlines should be cut clean at 90 degrees with a suitable blade or Stanley knife.

FITTING INSTRUCTIONS

For ease of photography we have removed the EAS valve block and housing from the vehicle. Removal is not required when fitting this device.

Depressurising  the system - The air suspension system should be fully depressurised before starting working on the EAS valve block. If the Land Rover T4 test equipment is not available to depressurise the system you should park the vehicle at the lowest possible access height and great care should be taken when removing any airlines.
This is the EAS valve block housing, it can be found under the bonnet and is situated just above the passenger side front wheel. 

On the engine side of the EAS housing, you will see seven airline pipes entering the valve block, the ones we are interested in are the block of four, three of these may have colored sleeves.

At this stage there may still be some pressurised air in the springs and tank. Care must be taken as air will be released and the corner of the vehicle relevant to the airline being removed will go down to the bump stops. Check for ground clearance under the vehicle and always wear eye protection.

In turn release each in the group of 4 airlines from the valve block as in this picture. For ease of manoeuvring you may find it easier to also remove the slightly larger airline from the valve block as I have and as shown on the right of this picture.

You will notice that the valves are numbers on the side of the valve block.

No 1 - Rear passenger side                       No2 - Rear Driver side

No 3 - Front passenger side                      No 4 - Front driver side

Now connect the two pipes running to the rear air springs into one of the Y-pieces and the two pipes running to the front air springs into the other.

It should look something like this.

Don't forget to plug the slightly larger air pipe back in if you did remove it.

 

OPERATING INSTRUCTIONS

If manual re-inflation of the air suspension system is required, it is important to disable the factory electronic ECU system first. The quickest way to achieve this on a P38 Range Rover 1994-2002 is to remove the delay timer which is situated under the front passenger seat, it looks like a black relay and should be the only one under the seat, please check the Part No: ANR4387 or ANR4652 before removing it. Please note: Classic Range Rovers 1992-1995 have a disable switch under the rear of the drivers seat.

Once disabled you can remove the valve cap on the new 2 new filler air valves and re-inflate the vehicles air spring using any compressed air source, such as a garage forecourt tyre inflator. 

When the EAS Electronic Air Suspension is disabled there is no control over the height. 

A height of 450mm measured from the centre of the road wheel to the bottom of the wheel arch equates to a standard setting. Check for leaks regularly as the onboard compressor will not top up the system.

DO NOT OVER INFLATE THE AIR SPRING BAGS - you will be surprised how quickly the vehicle will rise up especially using a garage compressor. Over inflation will damage your air spring bags. They will pop just like a balloon if over inflated.  

If you have any questions or need any advice email advice@tawpark4x4.com 

Telephone Advice: 07710 359319