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Posted by: Chris914n6 Nov 27 2016, 05:48 PM

I popped the roll pin out of the clutch arm. Soaked it, hammered it, stuck it in a vise and muscled it, no budge. What's the trick?

Posted by: mepstein Nov 27 2016, 05:58 PM

Our mechanics always use heat to unstick things and lots of it.

Posted by: BeatNavy Nov 27 2016, 06:00 PM

It was a royal PITA for me. I soaked it with PB. Then tried that acetone/ATF fluid mix. Lots of heat. BF Hammer. No dice. Finally after several days I think I had it in a vice with a drift the right size. Used the floor jack handle as my cheater bar and finally got it to budge. After that, it was just a matter of time. This one can really suck, no doubt about it. It was harder than the shift bar linkage pin I did last year, and I thought THAT was PITA

Posted by: gms Nov 27 2016, 06:24 PM

if you don't have a press try an air chisel and heat

Posted by: Elliot Cannon Nov 27 2016, 06:51 PM

Or send it to bdstone914.

Posted by: injunmort Nov 27 2016, 06:51 PM

i am confused. did you get the roll pin out and now having trouble intsalling
it or have you been unable to remove it?

Posted by: Chris914n6 Nov 27 2016, 08:19 PM

I have a 20T HF press. Haven't thought of a way to mount it without damaging it. Pics or a how to?

Posted by: porschetub Nov 27 2016, 08:21 PM

Are you punching the pin from the correct side,if I rememeber right theres one end and then the other,Elliot that's sounds like the sort of reply you would get on Pelican,no disrespect to Bruce but many can only afford DIY.
Its not like we own cars that are worth that much ...sad really.
My assembly was all pretty and painted up but little else found most bushes gone or very worn,replaced with bronze bushes all good.

Posted by: Chris914n6 Nov 27 2016, 08:44 PM

I can see the confusion now. I'm trying to get the arm off to do new bushings, clean and repaint and stuff.

Nothing against bdstone, I just like to do my own stuff.

Posted by: bdstone914 Nov 27 2016, 10:09 PM

Yes heat. Heat it until the bushings catch fire and burn them out.
If you hammered on the end of the shaft you will mushroom it and never get it out. Hammer the shaft back in by placing the clutch shaft end with the lower clutch arm over the spread vice jaws. Hit straight down just enough to get it to move.
Now inspect the end to see if it is mushroomed. If so file or grind down the flare on the end.

Then clamp the other end of the clutch shaft in the vice and using a large adjustable wrench twist the lower clutch shaft wist back and forth until you can get at least 1/4 turn of movement. Don't use to much force in twisting. I have twisted the hole shaft and stretched the round roll hole oval.

If that is not clear I can take pictures tomorrow. I have had a few out of the couple hundred I have rebuild where I could not get the lower clutch to move. I then grind through the lower clutch arm with an angle grinder.
If you have to do that I can supply a replacement part.

Last resort send it to me and I will rebuild it.
Bruce

Posted by: rjames Nov 27 2016, 11:22 PM

When I rebuilt mine I had the same issue and ended up just taking it to a machine shop. They got it out in 10 minutes and didn't charge me anything.

Posted by: bdstone914 Nov 28 2016, 12:04 AM

Here are some pics. Pound the shaft into the clutch arm with the vice jaws spread just wider than the shaft diameter. You only need to move it about MM. Grind down the flared end.

Clamp either end of the shaft on the vice and twist the other end with a long wrench. Work back and forth until it turns more easy.
Clamp the shaft flange in the vise. Have a helper use two screw drivers to pry on the lower shaft while you twist the lower clutch flange. put the upper clutch pedal back in to have more leverage.








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Posted by: whitetwinturbo Nov 28 2016, 11:24 PM

Posted by: mb911 Nov 29 2016, 04:45 PM

Bruce what bushing kit brand do you recommend and where do you suggest buying them?

Posted by: Rsjg911 Nov 29 2016, 05:53 PM

Sounds like rebuilding your cluster turned into a Cluster Fuch!

Good luck!

Posted by: Chris H. Nov 29 2016, 07:38 PM

That job that is rarely worth doing yourself. The brute force and heat required to get that &*(&^*ing thing apart is nuts. Top 10 on the "914 projects that suck" list. Send it to Bruce, he will send you a nice purty one back.

Posted by: mepstein Nov 29 2016, 07:59 PM

100%

Posted by: bdstone914 Nov 29 2016, 09:01 PM

To the OP: did you get it apart? did the pictures make sense?


Thanks for all the kind words. After doing a couple hundred you learn a few tricks. I like building them. Some I get apart in ten minutes. Some in an hour and the one in the picture never.
I realize my service is not for everyone and do not mind helping with advice helping other rebuild theirs. I also do them for 911 up through 1989 including the G50 type sets.

Bruce

Posted by: bdstone914 Nov 29 2016, 09:04 PM

I buy mine from Pelican cause I work there and get them at cost. They all seem to be the same made by Cannon.
Pelican 10-1792-423-M105 for $14.25

Posted by: Chris914n6 Nov 29 2016, 10:32 PM

Thanks. Pics helped alot. I didn't think of pushing it in to break the bond. I'm hoping to get to do car stuff tomorrow. Mine is not nearly that rusty so I'm optimistic.
Is someone making replacement springs? Mine is missing, though I think I'll be engineering a helper spring for the big 9" clutch.

Posted by: Chris914n6 Mar 28 2017, 12:26 AM

Round 2. FIGHT!

Melted the bushings out no problem.
Mounted in press, cooked the end, got it to pop to about middle of the pin hole.
Mounted in vice, filed the lip, cooked end again, can't get it to twist.
I've got it soaking overnight.

Luckily this is an extra one.

Posted by: Chris914n6 Aug 25 2017, 10:31 PM

Trying to get everything that needs to go thru the new sand blast cabinet done so I can get it moved from the driveway, so gave it another shot. Guess it soaked long enough or it just needed to be under 100f outside

Now I can finally put it in the pile to powder coat

Posted by: bdstone914 Aug 26 2017, 09:01 AM

The clutch shaft looks like it is some what under size from the rust eating it. You can build them up with JB Weld and smooth it out. As it it might make for extra wobble in the pedals.
I am going to soon be making new clutch shafts with ball bearings to replace the bushings which wear through even if the bronze ones are used. Half of the ones I see are like or worse then yours.

Posted by: worn Aug 26 2017, 09:22 AM