Category E34

Below you can see some photos from a 4HP-24 rebuild.

I had to replace the cylinder head gasket on my 1991 735iA because of pressure leaking out into the cooling system. Eventually the coolant went through to some oil channels. The lobes on the camshaft were worn, as were the…

You can replace the pin with an M10 bolt and a locking nut, then tighten it just enough to get rid of the play.

Door seals on a 20+ years old car are usually pretty bad, with the one for the drivers door being the worst. Except wear they also shrink. I bought some used door seals from an E60 and used in my…

Post not finished! After experiencing intermittent problems with the powersteering in the 525tds, conclusive testing showed the Servotronic control module being at fault. The unit is located in the left front footwell, behind the loudspeaker. In my case the transistor…