TheSamba.com :: View topic - Fixing cranks; dowel pins loose?? Holes un-drilled and re-drill

Wed Jan 10, 2018 7:59 pm

Brian_e wrote: Awesome work!!

Have you perfected the broken off flush pin removal yet?

Modok's FUBAR'ed crank repair service.

Brian
Yes, actually. Discussed here.
https://www.thesamba.com/vw/forum/viewtopic.php?t=634846

Wed Jan 10, 2018 9:31 pm

esde wrote: Ebel wrote: I would think the labor involved would make it too costly to save stock cranks.

when you can no longer find a std/std stock crank, it will be worth it. Hell, they're hard to find now.

Std/std Cranks? yes and unfortunately lots of these cranks were ground not because they needed it but because someone want to sell a crank regrind.

Dan

Thu Jan 11, 2018 7:51 am

modok wrote: [email protected] wrote: How much material did you end up taking off the end of the crank to make it flat?

I have at least 100 cranks that I need to do this to. Many of them are perfect std/std too....
Somewhere between .001 and .002"

That's pretty good. That shouldn't affect setting end play at all.

Sat Jan 13, 2018 4:05 pm

So what is the maximum acceptable run out with the fly wheel bolted on to the crank? Also where on the fly wheel are you taking the run out measurement from?

Marty

Sat Jan 13, 2018 7:17 pm

motomwo wrote: So what is the maximum acceptable run out with the fly wheel bolted on to the crank? Also where on the fly wheel are you taking the run out measurement from?

Marty
max-acceptable? That's quite subjective, for shoot the moon type stuff like rare cranks.

It says in the manual what the specification is, for OE service, and it's fairly lax

I'd like to see below .003 at the pressure plate, below .004 at the ring gear, below .002 at the friction surface, below .0015 at the rear seal, below .005 at the OD and backside, below .0005 at the thrust face
As what I would say as a NEW limit.
It could be twice that and function fine, but when machining the parts this is what I would shoot for, or better.

Sun Jan 14, 2018 7:57 am

Glen,
Thank you very much for the info.

Marty