My *new* 717.431 had a safety pin (wierd looking cotter pin) attached to the magnet when I drained it. Syncros in 2nd are completely absent, looking to fix this myself. I have the 4spd manual(book) but not the 5spd.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

Don't know if you mean the synchros were not installed... or have ' worn ' out.. and are gone..
There are threads in the past where one of our moderators talks about some trans fluids being corrosive to synchros... Jim Smith...
Either way you will want to put the proper spec lube in when you put everything back together...

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Does it look like a piece of mechanics wire? Post a pic, sounds like a piece of a synchro spring

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There's actually quite a big difference between the lower numbered 717.4XX gearboxes and the ones starting from 717.41X - I'm not sure how different the 717.43X versions became.

Here's my 717.412 in bits and then put back together again

717.412 (5 speed manual gearbox) refresh

If you send me your email address (PM / direct email via this site) I might be able to help a bit more.

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!