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Cub Clutch Pressure Plate Problem

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foxprints

09-07-2006 13:19:04




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What is the proper set-up procedure for installing a new clutch & pressure plate in a cub? What measurement do you set the release levers on the pressure plate & what do you measure off from? My brother has burned up the end of the levers on a brand new pressure plate & trashed a new throw out bearing. We assumed that the pressure plate was factory set, but apparently not.




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foxprints

09-07-2006 14:19:40




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 Re: Cub Clutch Pressure Plate Problem in reply to foxprints, 09-07-2006 13:19:04  
This was a new rockford clutch, they say that the measurement should be 1.901" from the machined face of the pressure plate to the release lever contact surface when installed with the clutch disk, how the heck are you supposed to measure that when it is installed? It is hard enough to measure on the bench even with 12" dial calipers!



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Bigdog

09-07-2006 18:16:10




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 Re: Cub Clutch Pressure Plate Problem in reply to foxprints, 09-07-2006 14:19:40  
Also, the throwout bearing must be lubed when installed. It will wear quickly if you don't.



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Merlin

09-07-2006 16:42:10




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 Re: Cub Clutch Pressure Plate Problem in reply to foxprints, 09-07-2006 14:19:40  
Just went through this last week. The guys on the Cub board helped me through it. To measure the 1 1/8" to 1 1/4" to the plate while still in the tractor, I bent a small stiff wire to 90 degrees with the short end being 1 1/4" long. I then put it in beside the fingers to see the measurement. If I needed to adjust it, I took a 1/4" ratchet with a 1/4" socket and put a flat screwdriver from a drill motor set in it and loosened the nut and held it with the 1/2" wrench and ratcheted it into adjustment.

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Andy Martin

09-07-2006 15:50:31




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 Re: Cub Clutch Pressure Plate Problem in reply to foxprints, 09-07-2006 14:19:40  
You can usually find a hole to measure through.

By the way, the burned fingers on the existing pressure plate should not make it unuseable unless they are warped out of shape. Just get it adjusted and use it.

By the way, did he adjust the free play. Even if the fingers are not adjusted right, the problem you have would not have happened. If you have free play, the fingers and the throwout bearing do not touch. You might not have been able to release the clutch, but if all three fingers are burned it means they were all running on the throwout bearing.

I don't like that carbon bearing but I guess they can last a long time.

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Bigdog

09-07-2006 14:16:16




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 Re: Cub Clutch Pressure Plate Problem in reply to foxprints, 09-07-2006 13:19:04  
Measure straight down from the fingers to the surface of the plate. The fingers should be 1 1/8" to 1 1/4" from the surface. I generally use 1 1/4". What's important is to get all 3 as close as possible to the same dimension.



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John M

09-07-2006 14:07:24




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 Re: Cub Clutch Pressure Plate Problem in reply to foxprints, 09-07-2006 13:19:04  
On my Cub all 3 fingers were off, this was a new pressure plate from Case IH by the way, not rebuilt.I think the setting is 1 1/2 inchs, but I cant remember right off hand from where the measurement is taken,Im wanting to say fron the clutch disc face, but that doesnt sound right.I dont know why some people think that the fingers are set at the factory on a replcement pressure plate.I just cant find it in myself to trust someone else to make sure what I put in is right straight out of the box.

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Andy Martin

09-07-2006 15:46:01




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 Re: Cub Clutch Pressure Plate Problem in reply to John M, 09-07-2006 14:07:24  
Obviously I'm one of those. I don't buy new, but I have never never received a rebuilt pressure plate which was not adjusted right.

I do look at them after it is in place to make sure the throwout bearing is going to make proper contact.

Different folks do have different experiences. That is one of the values of this board.



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John M

09-07-2006 17:32:49




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 Re: Cub Clutch Pressure Plate Problem in reply to Andy Martin, 09-07-2006 15:46:01  
Im not "picking" on you or anyone. Its just in the last few weeks there have been several threads where someone was told they should be right out of the box. I dont see why we should expect them or anything else that can be adjusted or is adjustable to right as soon as we open the box.Its just like a spark plug. We open the box, check the gap and just by luck or coincidence its right.Do we check the rest or not, we do right, so why should a pressure plate be any different? Sorry for the rant.

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Andy Martin

09-08-2006 05:09:35




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 Re: Cub Clutch Pressure Plate Problem in reply to John M, 09-07-2006 17:32:49  
I didn't think you were ranting.

In my opinion pressure plates are a little different in that over the years I have seen people a) try to adjust them before installation and b) adjust them to match the throwout bearing which may be cocked in a relaxed condition. These were automotive applications.

Since I have been lucky and not received one ready to go, my opinion is colored by that experience.

It is pretty difficult for most people to set fingers on the bench before installation. Most don't realize the pressure plate has to be compressed to match installation and try toaadjust the fingers while it is relaxed.

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Andy Martin

09-07-2006 13:54:15




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 Re: Cub Clutch Pressure Plate Problem in reply to foxprints, 09-07-2006 13:19:04  
You are right, you should not have to adjust the fingers.

Did he adjust the pedal travel for the proper free travel.

It must have been riding all the time for the throughout bearing to burn up.



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