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Re: A Better 900 Transmission
Posted by David Prantl (more from David Prantl) on Tue, 7 Mar 2000 10:47:03
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

>  The rest of the tranny stripdown and rebuild  is pretty straightforward 
>for anyone with some  mechanical skills and tools.

Well, there are a couple of other tricky things about the
differential/pinion/final-drive assembly.  Namely, measuring the pinion
depth and crown gear backlash with a suitable dial gauge setup (and special
jig), and shimming the pinion bearing and inner drivers properly into
place.

Pinion bearing replacement and re-assembly with correct preload are
probably the trickiest to do right, and require a variety of press tools, a
tapered-roller-bearing puller, and of course, a press.

The best investment is to spend $20+ on the SAAB service manual section
that covers the transmission in question before taking it apart.

Sending out the pinion bearing assembly to a trustworthy and experienced
professional for bearing replacement is an excellent idea.

Best of luck,

David Prantl
david_prantlno39sdcx6spamx782hotmail.com
'84 900S, 5-spd, 210kMi, RIP
'86 9000T, 5-spd, 176kMi
'88 9000S, 5-spd, 137kMi
'90 9000S, auto, 133kMi
'89 900, auto, 115kMi
'68 97 Sonett V4, 76kMi, #000467
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