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Re: 4HP22 Auto Trans for E34 '89 Model (archive)

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Posted by Neil Deshpande on September 24, 2001 at 08:56:40:

In Reply to: 4HP22 Auto Trans for E34 '89 Model posted by Pete on September 24, 2001 at 08:40:48:


Try these guys . I had to bench test a 740d auto-tranny one time and I got the plumbing diagrams, valve switching logic, etc., from them. There are some rebuild manual that are $100 and some valving manuals that are $30 or so I think.

Good luck and keep us updated. Rebuilding an automatic is not that big a deal from what I know. I missed a class at my last workplace due to a client engagement, but several of my colleagues learnt to dismantle and reassemble on in about 2 hours.

Neil Deshpande


Does anyone have information on this 4HP22 ?

I got a faulty one in my workshop and would like to do the repair myself. But I prefer to have some info or drawings first before I start.
Hope somebody in here can provide some info.

Thank you in advance.

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