Just me being me. Is the valvue body a totally different part from the A-drum?

If so then in this tranny shops opinion was the valve body is actually what is causing the a-drum to fail in the first place? Ther by changing the valve body will oliviate the need in replacing the A-drum?

Just trying to understand the connection, cause and effect, between the two parts.

Question for Gus would be to ask his tranny repair shop if the valve body contributed to the A-drum failure!

 

DaddyO,

It is my understanding (big qualification here) is that yes the valve body issue would force the other tranny parts (A drum included) to function under excessive pressure thereby causing metal fatigue and eventual failure.

 

I have no idea if it does but will call Tom

 

I called tom and asked about the valve body and did it contribute to the B clutch hub failure and he told me this. The valve body on this transmission does not have a high failure rate but this is one of the areas that he checks. This one was OK! He also said if the valve body were worn or not it is not the primary reason that the B clutch hub fails.

 

What then is the primary reason that the B clutch hub fails or does Tom know?

I was given the name of a tranny shop that works on Jag's when I asked an independent Jag shop if they changed the oil in an XK8. I called the tranny shop and was quoted $180 to change the fluid and filter. They also said that this valve body should be changed out and the total cost would be $500.

While changing the fluid and filter can you inspect this valve body without taking anything more apart? I don't need tranny problems. We use this Jag for long distance trips. It looks good and is not a garage queen.

 

Just poor design or construction. The newer design has dimples on the one side of the B clutch hub and I will explain that when I get the photos on my page. I am still working on the coolant tank.

 

These are some really old post, don't know where I could get some up to date reply, but need to know are these older posts about automatic transmissions?

 

ocrigger, welcome to the forum. If you have a Jag or intend to you will find this forum invaluable in solving problems. This thread and several others discuss the 5HP24 ZF automatic used in XK8 from 1997 -2002. The a- drum was subject to failure.
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