nv3500 clutch fork issue

[MR.M]

Hi all,
Great site with a lot of information.
I have an odd ball project. Putting a 93 nv3500 into my 95 caprice. Everything is installed and ready to run minus extensive bleeding of my clutch lines.
I have been reading through posts on manual conversions and have not seen the issue I am having.

While checking my work, I noticed that my clutch fork (brand new) is slipping down a few mm off the throwout bearing (also new). This happens when I simulate the slave cylinder rod and depress the fork by hand.

I have checked to make sure the fork retainer clip is installed correctly.
Besides getting a new clutch fork, am I doing something wrong with my installation.

Also, is there a known source for a repair manual for this trans. Called the local trans shops and nobody has one?

thanks again
Matt

[907 Chevy]

Have you made sure the fork is correctly seated in the throwout bearing?

[MR.M]

Thanks for the response,
Yes I checked for proper seating. Even found an online diagram showing it.
Even put the dial caliper on the throwout bearing and it specs out to the same diameters as original.

[907 Chevy]

It could be that when you actuate the fork by hand you may be pushing it up or down slightly causing the fork to deflect.

[NEUMANNZZ]

does it fall off with the slave installed?

[MR.M]

907, I thought about that and tried with the slave. Still falls down.
Going to go grab another fork just for sanity sake.
thanks guys

[someotherguy]

There won't be a do-it-yourself book out on this transmission. The NV3500 is known to transmission builders as being a real PITA to work on; overly complicated and requiring special tools.

You can learn a little about it here: http://www.rsgear.com/articles/1998_11.pdf

Richard

[907 Chevy]

907, I thought about that and tried with the slave. Still falls down.
Going to go grab another fork just for sanity sake.
thanks guys

Sounds like a plan. It could be the fork, I don't have much faith in new parts these days. More often than not they're just Chinese junk. Did you get the fork at the dealership?

[MR.M]

i did not. i know what u mean