Cascade Crew

iansane · Posted: Tue May 01, 2007 10:24 am Post subject: T56 trans problem

Having a problem after I slapped everything back together. It doesn't seem like the clutch is disengaging all the way. I press the pedal and it doesn't have the same feel or travel it used to and it just grinds when I try to put it into gear. I checked the fork itself and the bolt is as tight as I can get it. It doesn't look like it's binding on anything but there is a significant amount of play in the fork. It's seated on the TO bearing properly. There is fluid in the system and it's not leaking. I'm stumped. Confused

Twilightoptics · Posted: Tue May 01, 2007 11:27 am Post subject:

Wait... didn't you have a hydraulic bearing before?

If you switched to a fork that's your problem. The pivot ball has to be adjusted based on the thickness of your flywheel and distance away from it. I'll see if I can find the fliar.

It's super important. In a nut shell... IIRC....

You need the pivot ball to stick out towards the motor farther to put more preload on the fork/bearing etc.

iansane · Posted: Tue May 01, 2007 11:32 am Post subject:

I did have a hyrdo TO but I went back to stock since I was having a problem with the MC. Long story. This was easy then.

There is not pivot ball.

Twilightoptics · Posted: Tue May 01, 2007 12:04 pm Post subject:

The pivot ball is what the clutch fork is attached to on the bellhousing.

Not talking about the mechanical linkage ball.

iansane · Posted: Tue May 01, 2007 12:43 pm Post subject:

Like I said, there is no pivot ball. Just like the clutch setup, the lt1 style is different. The pivot point it a loose T-bolt on the front side of the trans case itself. It's a pain in the ass. I can get it off easily but getting it back on is miserable.

Twilightoptics · Posted: Tue May 01, 2007 3:48 pm Post subject:

Oh I see you went back to LT1 Stock.

I made the assumption that you went back to thirdgen stock.

Nevermind. Out of my league now LOL

Sellmanb · Member Joined: 30 Nov 2004 Posts: 727 Location: Tigard, OR

If it's still a hydraulic clutch slave system, then make sure to bleed the slave cylinder. I'm not sure about on 3rd gens, but some I've worked on that old have had adjustments at the clutch pedal to set the pedal travel, it made need to be adjusted if possible.

iansane · Posted: Tue May 01, 2007 6:28 pm Post subject:

I never cracked the hydro system open though. Plus I checked the fluid and slave extension and tried the 4thgens method for "bleeding" (just pumping the pedal a bunch) and got nothing.

I just yanked the trans again and will be looking at the PP/clutch in a few.

RSFreak · Posted: Tue May 01, 2007 8:31 pm Post subject:

Damn manual trannys! I've had my fill of them this year! Good luck Ian!

Twilightoptics · Posted: Tue May 01, 2007 11:53 pm Post subject:

You put the LT1 style flywheel back on right?

iansane · Posted: Wed May 02, 2007 2:53 am Post subject:

Yeah, LT1 fly. It was functioning fine before the dyno gathering with the clutch that came with the trans and flywheel. I bought all new stuff and now it doesn't work.

305 302eater · Posted: Wed May 02, 2007 8:25 am Post subject:

Hey Ian are you sure your master or slave cylinder isn't taking a dump on you. When i installed mine i had to buy both new ones. Then i had to get another master cylinder again. They seem to be made cheaply. Just what i think if you not getting the clutch to engage might want to look at those. OH and as far as the clutch fork i had quite a bit oh play in mine. i think it gets taken up when you bolt the slave on though.

305 302eater · Posted: Wed May 02, 2007 8:38 am Post subject:

hey ian when you were coming back from the dyno and you thought your t56 went out could you still rpm match shift it?

iansane · Posted: Wed May 02, 2007 9:36 am Post subject:

How would I verify both MC and SC are functioning correctly without jsut throwing parts at it?

Coming back from the dyno was fine, I didn't have a problem until I got back in town, the TO bearing broke off the pressure plate and I had no clutch at all.

305 302eater · Posted: Wed May 02, 2007 10:20 am Post subject:

wow that weird. I'm not really sure how to check my guess would be have another person there slowly pump on the pedal and you be under the car and see what happens. if the pedal still goes down i would say it might be your slave cylinder. But i'm nit exactly sure. My master cylinder froze so i couldn't push the pedal down. Oh and you should have a plastic strap in the slave cylinder that attaches to the base of it and goes over the push rod. That should still be on there. Its suppose to be there.

chevymad · Posted: Wed May 02, 2007 5:00 pm Post subject:

If the slave cylinder isnt leaking then its fine. Now the master cylinder is alot harder to diagnose. Only way I could think of is if you knew how far the slave is supposed to move when the pedal is pushed to the floor.. then you could measure and compare. Also if you step on hte pedal and the clutch works then bleeds off.. thats a bad master.

iansane · Posted: Wed May 02, 2007 6:13 pm Post subject:

Well luckily it's still under warranty from GM so I'm taking it all out tonight and will have a brand new SC, MC, line and resevoir tomorrow morning.

305 302eater · Posted: Wed May 02, 2007 6:24 pm Post subject:

Hopefully its that. If not i have no idea without looking at it. Good luck Ian. Thumbs up