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So today I open my transmission for a build and I noticed A small damage I don’t know how this happened in my VB is it fixable?!
also I noticed when I opened the rear servo Assembly, Piston and Pin was not seated correctly it was stuck in 10° angle
also I found rust on some springs and oil pump
I attach a pictures for the VB and forgive my drawing hope its clear enough
Markhaba khabibi
This kind of shiet happened to me too.
i once bought a used 60 that had water damage to it. I inspected it and closed the pan and didnt clean the tranny.
After a few months i was about to rebuild it. I bought them parts, tore the tranny, and the VB was all eaten just like in your case.
Im not a chemistry guy, but this alloy sure doesnt like to be soaked in water ATF solution.
Do not reuse it since this unit can have valve bores eaten just like in your case.
You may be able to have a machine shop resurface the valve body if you wanted to chance it, but you may be time and money ahead to just source another valve body. It's hard to tell how deep those gouges are from photos, but I don't think they're from corrosion. It looks like it was dropped on something that gouged it.
Markhaba khabibi
This kind of shiet happened to me too.
i once bought a used 60 that had water damage to it. I inspected it and closed the pan and didnt clean the tranny.
After a few months i was about to rebuild it. I bought them parts, tore the tranny, and the VB was all eaten just like in your case.
Im not a chemistry guy, but this alloy sure doesnt like to be soaked in water ATF solution.
Do not reuse it since this unit can have valve bores eaten just like in your case.
Inshallah use another transmission.
Thankyou Khabibi Edward 😅
am sorry to hear that,
also it’s not the VB sorry for Confusion it’s the case side,
You may be able to have a machine shop resurface the valve body if you wanted to chance it, but you may be time and money ahead to just source another valve body. It's hard to tell how deep those gouges are from photos, but I don't think they're from corrosion. It looks like it was dropped on something that gouged it.
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4l80e VB opinion please 
