Brass Lined C-4 Clutch Disc

1370rod

Well-known Member
I seen one of these disc's while searching for parts at the local salvage yard but had no idea what vintage or model it had been removed from. I am currently resealling the pwr shift on a very early 870 which this was removed from. I have ben doing this for more years than I care to mention and this is the first time I seen one like this in a tractor. I know some of you have heard horror stories about Power Shifts in these tractors, but trust me most problems are abuse or lack of maintainance issues. This tractor is well over 40 and this P.S. needs only a seal updating and brg just to be safe with over 10 thou on the meter. Rod.
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I have seen one or two thru the years cant remember what they were in. We have parted so many thru the years hard to remember. Thad
 
Rod, never seen one, interesting. Neibor has a 770 PS diesel. 20,000 + hours. I OH'ed it once and went through the Pto. Other than minor repairs that's it. Still used twice a day everyday as a TMR tractor.
 
Rod I should even have a few in my pile as I have seen quite a few of them, seems to me the 2670's I have done had them in it also
 
(quoted from post at 11:01:31 03/23/13) I seen one of these disc's while searching for parts at the local salvage yard but had no idea what vintage or model it had been removed from. I am currently resealling the pwr shift on a very early 870 which this was removed from. I have ben doing this for more years than I care to mention and this is the first time I seen one like this in a tractor. I know some of you have heard horror stories about Power Shifts in these tractors, but trust me most problems are abuse or lack of maintainance issues. This tractor is well over 40 and this P.S. needs only a seal updating and brg just to be safe with over 10 thou on the meter. Rod.
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That is the standard plate on all the early tractors, As 1370 said I also have gone thru and simply resealed and put the new bolts in and very rarely have a repeat.
I cannot believe hardly that as many people who have negative comments about the powershifts have never seen the brass C4 plate. That in itself speaks volumes about the dependability of even the early units. The problem comes nowdays if the hard parts such as planetary gears and drums need replaced, the parts cost can approach the value of the tractor new, and some are being dropped making good used the only option.

mEl
 
The sintered plates were bullet proof.

When i had a failure on the C4 clutch i wanted to put those in my 1370 but couldnt find any new ones so I went with the paper fider stuff from case/ih.

I did however find sintered brake disks and sintered plates for the differential.

I was told that when case originally made the 70 series they came out with the sintered plates even for the PTO.

The things wouldnt hardly wear and you could use any oil against them. They could even take water!

For some reason case changed to the paper fiber plate and had what can only be described as a glue problem.

i wish someone would make the sintered plates again.
 
The one that came out of the 870 that we picked up last fall didn't look quite that nice. It was replaced in the course of RPS rebuild, upgrade.
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For some reason the piston must have been putting pressure on that one spot to be worn off like that.
 
I should have mentioned the number below is for the good plates they used in the 30 series and very early 70's. It still is available, always has been just cost more than those cheap paper ones they began using in new production.
 
No, The No. above is for the sintered (brass) style PTO plates I thought you were referring to. But from now on when I see the C4 in the salvage yard I'm going to make sure I buy them. Rod.
 
(quoted from post at 05:11:50 03/24/13) For some reason the piston must have been putting pressure on that one spot to be worn off like that.

I would expect you to find that plate is warped from slipping causing the wear on one spot like that.

mEl
 
Check with a company called Alto Products out of Atmore, Alabama. They are the largest aftermarket plate supplier in the U.S. (maybe the world) for transmission stuff. they make plates for motorcycle, marine, industrial, and some tractors. Most of their stuff is various kinds of paper, but I believe they do some of the metallic ones also. I've seen smaller ones like that before, I think it was a marine application, and also a small ford tractor pto drive. The paper stuff won't hold up to anything where water could be present. The heat will steam the lining right off in big hunks. Send me an e-mail and I'll give you my 800 number. I'd be glad to call them and find out if they have what you need. We buy thousands of plates from them, so I like to think I'm on their good side, lol.
 

While we are talking powershift, I try to talk all my customers who bring in one for rebuild to update to the later pistons with the squarecut seals with the oring expander. The seals are very positive iin relation to the old style seals with piano wire expanders. Very few refuse when the option is given.

mEl
 

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