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Hi Don
I’m not sure about those two illustrations as either being a p drive as they both might be the J drives.
My 1978 and 1984 J drives have speedometer outputs but from my 1986 up they don’t because of the electronic speedometer conversion.
Just between the two parts 56 and 59 the drive to speedometer got changed. It’s now smooth, So that, explains my differences.
While looking at the two illustrations I see some internal part # changes and the Volvo production numbers in the bottom right corners have quite a distance between them.
All of This could mean many many revisions or nothing more than their illustrations programs did many other assemblies.
While even those could something completely different, in between, the driveline outputs are shown with variations.
So nothing technically conclusive there can be made IMO. This chapter is missing pages from an entire book.
It would take someone working in a departments archives to take the guesswork out.
Numbers are direct but we are learning that a dash - and a another number in a parts reference is another ? mark.
There is a language to all to those in the realms of that knighthood.
So I’m dumbfounded about the P overdrive units being unit made with more or less strengthening.
J comes before P and means nothing really.
I would have to know more about the LayCock’s company endeavors for a knowledge base.
I’m glad to see the gaskets found a new home.
Also glad to know that some factory person didn’t spend a part of their “life’s time” just to be tossed as more waste matter!
Good on the poster Dave B? 👍
Phil
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