Crown and pinion wear patrern, Didn’t change pinion bearings , shims or paper gaskets Options

[panayotisnikas]

Hello everybody , I just finished flipping my 914 gearbox to use in a beetle , I replaced 1st gear dog teeth and synchro ring , diff bearings , input shaft bearing . I set the preload for the diff , backlash is correct . I don’t think the engineering blue
I found is the best in the world because it’s hard to leave Marks on and kind of peels .
I did my best to get a reading .
I didn’t mess with the pinion bearing or it’s shims, neither with the paper gaskets between the case and the intermediate plate . So I wouldn’t expect having altered the pinion depth .

[panayotisnikas]

Also a pic from the other side

[Superhawk996]

Delete duplicate post

[Superhawk996]

I'm not a trans expert . . . Calling Dr_Evil. I've rebuilt a couple over the years and I'm around mechanics that regularly set differentials up from scratch and see the patterns.

@Dr Evil


I'm not sure which side of the pinion is drive side (usually the convex side) vs. cost side (usually the concave side) given that pinion has been flipped for a bug. So my advice is worth what you paid.

I'd start with proper ring and pinion marking compound or marking paint so you can at least get a good read on what the actual pattern is. The layout blue really isn't the right material for the job at hand but is certainly better than nothing. (IMG:style_emoticons/default/biggrin.gif) Nice way to make do with what was on hand though.

The 2nd photo actually looks like one tooth has a nice consistent pattern but is maybe a bit deep into the root and needs pinion shim adjustment to move the pinion higher on the ring (crown gear).

In the 1st picture, I can't tell what is pattern vs. flaking but the straighter linear pattern that I think is "the" pattern is still a bit deep. It may be deep from the old gaskets having been squished a bit over the years?