Air suspension compressor

Hi Guys,

I am writing this on behalf of my husband who has had to go back to work, so you will have to excuse me if I am not using the correct terms!

He has taken the compressor out of the car so he can change the teflon seal in between the piston and the clamp ring. After many swear words later, the clamp ring came off and he replaced with a new seal. He bought the kit online with new O ring to go on the cylinder head etc... so has replaced this too.

Since putting the compressor back into the car, he says it appears to be too slow at changing the ride height of the car. It will go down no problem but when trying to pump the car back up, it takes some time for the front of the car to lift (no problem with the back). He also says it is making a 'funny noise'.

Is this normal after changing the piston seal?

Any help would be much appreciated!

Test the output airflow from the pump.Remove the blue tube from the comperssor outlet under the compressor and hold your finger over the pump air outlet and run the compressor.You should not be able to stop the airflow with your finger.If you can then there is an issue with the pump.

You may also need to replace the diaphragm in the block (next to the pump)

The back always lifts first to avoid headlight dazzle, but if the front is slow to lift, either the compressor is not doing it's job or there is a leak.

Has he put the seal on the right way round?

:doh:

Hi Guys, I have put new piston seal on the right way does anybody know the flapper assembly for the pneumatic casting because I took off the screw and it all fell apart so didnt get to see.... AHHHH Please Help!!!!!

Mr Rowland said:

Hi Guys, I have put new piston seal on the right way does anybody know the flapper assembly for the pneumatic casting because I took off the screw and it all fell apart so didnt get to see.... AHHHH Please Help!!!!!

Click to expand...

When you say flapper assembly. Do you mean the reed valves?

yeah mate

Thinner longer one goes on bottom, thicker or shorter one goes on top of it. The long ones must be absolutely flat or slightly reflexed down. The shorter ones dead flat. Put a little thread lock on screws.

Thanks wammers. The longest reed is bent at the very end. I think this is why the pump works ok but doesnt build up very much pressure. I can put my finger over the end, just. It just doesnt seem right.

Thanks for all your help.

Mr Rowland said:

Thanks wammers. The longest reed is bent at the very end. I think this is why the pump works ok but doesnt build up very much pressure. I can put my finger over the end, just. It just doesnt seem right.

Thanks for all your help.

Click to expand...

The reed valve for the inlet must be dead flat to head so no light shows under it when held up to light. The reed valve for the exhaust must sit square on the O ring. If you fit a new O ring in the exhaust, stick it in place with a very small amount of silicone on it's under surface. The backup plates should be flat not putting any pressure on the reed valves holding them shut, they are just there to prevent over flexing and breakage.

The reed valve for the inlet is bent at the end. I accidently bent it, by dropping a spanner on it - ooopss! What will this do to the pump if you put it back together bent? I am going to replace the reed valve.

Mr Rowland said:

The reed valve for the inlet is bent at the end. I accidently bent it, by dropping a spanner on it - ooopss! What will this do to the pump if you put it back together bent? I am going to replace the reed valve.

Click to expand...

The inlet valve flexes as air is drawn past it when piston decends. It is then sealed against the head by air pressure as the piston rises forcing air past the exhaust valve which is in turn sealed by pressure on it from the feed pipe. If air is escaping back past the inlet valve, even a small amount, the compressor which does not have a high volume to start with, will struggle to pressurise tank. Don't know where you would get a reed valve from, unless someone on here has a spare one. Which is highly likely. Moral is don't drop spanners on easy to damage parts. Come on lads find him a reed valve.