The helix and secondary spring can be done with a set of snapring plyers and preferably a buddy to hold things.
The primary is very hard to take off the sled without a puller and a pain to work on when still in the sled. You pretty much need a clutch puller and compressor to work on it. Pluss it makes life easyer.
If you have a compressor and a clutch puller the job is pretty easy and quick. Primary clutches take a lot of force to get off the first time though. A large breakerbar or impact gun for the puller and another bar to stick through the clutch to hold it will be needed.
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