Rockford 9 clutch pressure plates

Posted by td5doug on July 15, 2007 at 12:36:18 from (207.200.149.81):

I've been looking at these pressure plates used in many of the IH tractors, mostly any model with a 123 cu.in was available with the Rockford 9" clutch. It appears there were several different springs used thru out the models & years, 2 different levers & 2 different face plates(pressure). the backing plate looks to be the same thru out. Where I get confused is , I've seen whats called a narrow lever #361 581 R91 offered, as well as one with 1 1/4" levers & 1.188" flywheel step #375 493 R91. But A & I products also offers #1251 692 C91 which is said to replace BOTH the previous part #'s. How does that work?

Interestingly, the I & F 404 & 2404 with 135 cu.in are also listed as using the 9" Rockford, it has a spring # that does not cross to any of the other models. It must be a much stiffer spring for the increased HP?

Doug

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