Suspension air pump bushes

[mooneyls430]

Had an annoying buzzing noise every now and again and traced it to the suspension compressor. 

Required the removal of the drivers side inner wheel arch which is well secured on. 

3 Bushes are easy to get. 2 with 10mm socket and one with 10mm spanner. A little soap and they slid in.  Heres a few pics and the part number. Very cheap from lexus themselves.

[The-Acre]

Good to see some decent photos of the part!  I had the same with mine, so I had the bushes replaced but the pump still rumbled.  I bought a new one from a breakers which still rumbles a bit, but it's much better.  Just out of interest I connected the old one to a Battery, it's not surprising they can be heard though, they make a right old racket when they're uncovered.  

They do kick in often, always when passengers get in, and when slowing down from high speed.

[GrahamG]

Many thanks Brian for those excellent photos. I had read elsewhere of this problem but never before been able to see exactly what is involved.

[cruisermark]

Yep - I have same probem on mine - I bought blue prints bushes and just waiting to find some time to change them - I may take it to a garage since its getting colder outside and as you the wheel arch is well secured

[GrahamG]

Brian, when you removed the wheel arch did you find any areas prone to rust behind the lining?

[mooneyls430]

Everything was spotless under the wheel  arch Hope it stays that way lol .

Wasnt even a layer of dust.  Keep note of all screws and clips so they go  back the same way.

[The-Acre]

2 hours ago, cruisermark said:

Yep - I have same probem on mine - I bought blue prints bushes and just waiting to find some time to change them - I may take it to a garage since its getting colder outside and as you the wheel arch is well secured

I was charged £40 for replacing my compressor which I was more than happy with.  I dismantled my old one as I was interested to see how it worked.  Apart from the air receiver, which is basically a cylinder with a fine filter, it has a piston and con rod with a plastic compression ring.  Fairly basic really.  So there are areas that wear, which although not serious, they can cause noise, as I discovered, so it's not always the rubber bushes causing the problem.  The rumble from the compressor was the only negotiating point when I bought mine, which could have put me off buying it, but as I now realise, it's not a big problem.