RCR 1872 Slip clutch questions

[Moose7060]

I have a RCR 1872 Rotary Cutter which came with the property when we moved in last fall, hence no history of the machine. Haven't had the need to use it yet, but will be soon. An earlier thread reminded me to perform a slip test which is recommended after long term storage to check the condition of the slip clutch. The test failed so I proceeded to disassemble and was amazed at what I saw, or in this case didn't see.

I discovered only 1 fiber disc, the one on the left in figure 5-4 was missing. Also missing is the clutch plate (middle right side of figure 5-4).

I am not sure about ring #10 in the picture below. It appears to be there but it is much smaller in diameter than the diameter of the fibre disc.

Here are two pics of part 9 from above. It appears to have that ring, but smaller diameter than the disc.

So question 1 is that the right ring and is it suppose to be smaller in diameter than the disc,
and question 2 is how to identify the driveline to ensure spring height is correct as shown in figure 5-5?

I have already ordered 2 new fiber plates and the inner clutch plate, and help on these questions would be greatly appreciated. Cheers and enjoy your weekend.

 

[mcmxi]

I am not sure about ring #10 in the picture below. It appears to be there but it is much smaller in diameter than the diameter of the fibre disc.


So question 1 is that the right ring and is it suppose to be smaller in diameter than the disc,
and question 2 is how to identify the driveline to ensure spring height is correct as shown in figure 5-5?

I have an RCR1884 that I bought new and need to check the clutch pack this summer too.

Doesn't that ring (#10) center the clutch disk? It looks like it's proud of the flanged yoke and should fit inside the I.D. of the clutch disk.

You might want to download the current parts manual for your RCR1872. Perhaps that'll shed some light on your driveline.

https://cdn-assets.greatplainsmfg.com/ari/attach/lp/public/manuals/312-556p.pdf

 

[Moose7060]

You might want to download the current parts manual for your RCR1872. Perhaps that'll shed some light on your driveline.

I did download the parts manual and it made it more confusing. The top picture I posted (figure 5-4) came from owners manual and it shows on the right side the end plate, another plate, and then the friction plate at the bottom. The next picture I posted came from the parts manual (312-728A) and it shows end plate #13 and then the friction plate #11, no second metal plate showing.

As for ring #10, I believe you are correct. It is missing and I'll need to get one. Cheers.

 

[whitetiger]

The collar, #10 is to Aline #12 hub to the #9 plate. The clutch plates are aligned by the ridge on each side of #12.
Check each plate with a straight edge to ensure they are perfectly flat, if they are warped you need to replace them. It is imperative the surfaces be flat as any warpage will allow the clutch to slip easily and destroy it.

 

[Moose7060]

The collar, #10 is to Aline #12 hub to the #9 plate. The clutch plates are aligned by the ridge on each side of #12.
Check each plate with a straight edge to ensure they are perfectly flat, if they are warped you need to replace them. It is imperative the surfaces be flat as any warpage will allow the clutch to slip easily and destroy it.

Thank you very much. To confirm, collar #10 is an independent part, that apparently I am missing.

 

[whitetiger]

Thank you very much. To confirm, collar #10 is an independent part, that apparently I am missing.

Actually, I think #10 is a bushing. Place #12 into #9 and see how much side-to-side play you have.
There should be very little. That will tell you if the bushing is there or not. In the picture, I can not tell.