915 Rebuild

[Wally]

Forgot to mention the guilty party: Worn slider 1/2:



These shiny bands should have a flat surface. The top one is most out of focus, but you can still see its clearly 'dented' in the middle...

[Sandeep]

Thanks for the pics Wally ... really cool looking at the inside of the 915. I will be making the upgrade from the 901 to the 915 later this year. :agree:

Sandeep

[effvee]

Originally Posted by Wally

Forgot to mention the guilty party: Worn slider 1/2:



These shiny bands should have a flat surface. The top one is most out of focus, but you can still see its clearly 'dented' in the middle...

Question, in replacing the syncros and sliders, was it much to it? I to have the "I'm going to mess it up frear thing" I know I will need a trans repairman to set the gear mesh for the ring and pinion when I get the GT ATB diff. How about the linkages internally, was ther much to re-set them?

[Wally]

Be carefull what you read on the inetrnet, as my above 'conclusion' was wrong!
The dented part in the middle is supposed to be there....

Originally Posted by effvee

Question, in replacing the syncros and sliders, was it much to it? I to have the "I'm going to mess it up frear thing" I know I will need a trans repairman to set the gear mesh for the ring and pinion when I get the GT ATB diff. How about the linkages internally, was ther much to re-set them?

The synchros itself are difficult to get off and on. Lots of force and plyer-force needed iirc. Not fun; possible yes, maybe, just..
I didn't set linkages as I didn't loosen them, but I should have resetted it. Also here: you need to know what your doing. I had to open the tranny once more because of my inexperience...

[effvee]

Walter, did you use any special tools? Press? indicators?

[Wally]

No, not really, just an air socket/wrench (sp?) for removal of the top two nuts (41 and 36mm IIRC) of the gear stacks is very recommended as is an old clutch disk to bold into your workbench. Of course things like a good gear puller, of which I modded the fingers a bit, is without saying.
The special 915 jig to set linkages inside is recommended too. Pelican makes a replica in hard plastic, very cheap btw!
I am sure to have forgotten things, but this is just from the top of my head.

[effvee]

Walter, concerning the I believe a Saab hydrualic throw out bearing that you modded to your G-50 setup. Do you believe this mod can be done to a 915 trans? Before I go any further in my 915 project, I'd like to know how I am going to address the clutch apply issue. I just noted your last dyno test, congrats.

[Wally]

1) I didn't use the Saab TO bearing in the end, but a Ford Mondeo (iirc) model as it was smaller.
2) AFAIK, room inside the 915 bellhousing is probably too small even for the smaller Ford TO bearing...