40c clutch

fundytides · Post by **fundytides** » Sat Jul 23, 2016 11:34 am

A couple of years ago, I installed a rebuilt clutch in my crawler. At the time, I didn't know about the need to adjust the clutch fingers using the tool, after installation. I have never been able to get the clutch adjusted properly.
It always had too much free play and wouldn't completely release even when adjusted as far as it would go. Today, I pulled the motor and checked the fingers with the tool I now have. The fingers are a little high but I don't think that would cause my problem. I have checked the adjuster and it doesn't seem excessively worn and there is no play in the clutch pedal linkage. What else should I look for? I really don't want to put it back together without finding the problem

original possum · Post by **original possum** » Sat Jul 23, 2016 4:56 pm

Check the flatness of the clutch plate. Could be a warped disc. Also make sure pilot shaft is snug in pilot bearing.

Post by **Lavoy** » Sat Jul 23, 2016 8:27 pm

Make sure the rod from the clutch shaft to the throwout bearing is not bent, seen it many times.
Lavoy

fundytides · Post by **fundytides** » Sun Jul 24, 2016 4:42 pm

Thanks guys. I will check all of these points tomorrow.

fundytides · Post by **fundytides** » Mon Jul 25, 2016 9:17 am

OK. I checked it out today. Pilot bearing is ok, clutch disc is not warped and clutch rod looks straight. What I did find is that the lugs on the sides of the carrier are worn down about 3/16". I will get them built up but is that enough to cause my problem? Also, I see in the parts book that there should be a felt behind the throw-out bearing. That is not there. Any issues with that? The throw out bearing looks to be aftermarket one. What should the overall thickness of the bearing be? Maybe it's the wrong one.

fundytides · Post by **fundytides** » Tue Jul 26, 2016 5:33 am

Checked the thickness of the throw-out bearing against one advertised by Steiner's. It is the correct .801" so that's eliminated as an issue. As I see it, I am only left with the worn carrier as the problem unless anyone has any other ideas.

Post by **Lavoy** » Tue Jul 26, 2016 9:26 am

Fingers high would be less freeplay, not more, so that is not it. Double check the part number on the throwout carrier in case is has been changed out to the wrong one.
Lavoy

fundytides · Post by **fundytides** » Tue Jul 26, 2016 11:55 am

Yeah, I figured that would be the case with the fingers. I took the carrier to a welder to build up the lugs. I'll check out the number when I get it back. Should the bearing be all the way down on the carrier? There is a lot of wear on the round part of the carrier as if a bearing was turning on it at one time. The bottom 1/4" or so of the round part is ok and that is where the bearing is sitting against the machined ridge. I assumed this was correct, but maybe not?

Post by **Lavoy** » Tue Jul 26, 2016 1:19 pm

Should be pretty much a square shoulder.
Lavoy

fundytides · Post by **fundytides** » Wed Jul 27, 2016 5:20 pm

Lavoy, I checked the carrier today and can not find a number on it. If you have one there could you tell me the measurement from the face of the lugs where they contact the yoke to the machined face where the bearing seats. That would tell me if mine is correct or not. Thanks.

Post by **Lavoy** » Wed Jul 27, 2016 9:20 pm

Send me a pic of yours to postmaster@jdcrawlers.com, and I will do some digging.
Lavoy

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