limiting clutch of CASE 970

bigned · Aug 12, 2009

I have just split my CASE 970 AGRI KING and taken out torque limiting
clutch, I have some wear but, would like someone more experienced to tell me what depth a plate should have on its working surface to be sure
that this is my problem ?

mEl · Aug 12, 2009

What was your tractor doing, you are not giving us a lot to go on. A torque limiter first starts to show itself going bad when you are in 4th gear. When you powershift at full throttle especially under load it will slide into the next ps range instead of a firm no slip engagement. They don't have much lining on them, if there are still lines on the facing maybe .020 deep it is not badly worn, I'm just pulling that figure out of my head but they are a set tension clutch and not designed for starting and stopping, just inching around as they absorb shifting shocks. What was your unit doing? mEl

Roger (Mi) · Aug 13, 2009

As mEl says, ordinally the torque limiter is NOT suppossed to slip at all except under a sudden shock load. It protects the powershift from damage. However, many tractor pullers will reduce the size of the spacers around the bevel spring to greatly reduce or eliminate torque limiter slipage. My son also increased the clutch pack pressure to prevent them from slipping. He would shift up when most other tractors were shifting down. He never had a powershift failure. That's one tough transmission.

limiting clutch of CASE 970

bigned

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mEl

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Roger (Mi)

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