Power steering jam

[bhm1712]

I have a problem with my power steering or steering in general - it's started jamming up temporarily at low speeds especially when performing a 3 point turn or similar. It will be fine and then All of a sudden the wheel goes solid and won't free up until I rev up the engine. It then seems to go with a bit of a clunk and all will be fine until the next time. I've checked the fluid level and it's fine and the belt tension is good too

Any ideas? I was thinking its a steering box issue rather than power steering pump?

[warlord]

Sounds like steering box, if it was the pump you still be able to steer, would just be heavy.

I don't know how similar the 2nd gen box is to a 3rd gen. But I read that if the steering box play is adjusted too tight, it can cause a jam.
also are any of the tierods etc bent or anything?

[thirdgen]

both box's are identical

[bhm1712]

Yes both boxes are the same. Only difference is pre 1980 the hose connections had an imperial thread and metric from 80 onwards.

I don't think the box is adjusted too tight as it has been fine for 3 years and it's not been touched. Nothing is bent underneath so it must be the box itself. Ball ache!!

[Jeff73]

If it was mine i would drain off all the fluid and check for metal particals, and maybe re- fill it with a power steering addative. im not sure but you have a blocked filter inside the pump