Foamy power steering fluid

[simonej]

I've finally taxed the Chim after 3 months off the road and just as I expected started on the first turn of the key! It ran a bit lumpy to start with but soon smoothed out and is running just as it was before I put it away.

One problem though, once warmed up the power steering is making a racket! Even in the straight ahead position it whines and becomes worse when you start to turn. This is accompanied by foamy fluid in the reservoir but the level appears to be OK. I can't see any obvious leaks in the hoses and it feels no different to turn.

So, any suggestions? It's due a service next month but would prefer to sort this out myself if possible.

[Janiceps]

I guess there must be air in the system making the noise and foam. I had a small leak at the u-bend, so I changed my pipes for these:

http://www.pistonheads.com/sales/1601914.htm

Very pleased with them.

John

[Harrytsg]

It can also be the seal and/or pump shaft bearings, possibly cavitation to the gears.