China:

go to www.4x4abc.com

Send an e-mail to the webmaster, Harald Pietschmann.
Tell him you need the shop manual for the 717.430, for the 86 300E.
Tell him Brian V sent you!
I just got a copy from him. It's the factory service manual; approx 110+ pages with all the detail you'll need. All the measurements, specs, step-by-step tear down and rebuild, etc. Sweeeet.
It took me quite a while to track him down. Cost was approx $40 or $45 shipped IIRC.
Good luck!

Brian

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Brian
1995 E320 wagon