Removing crank pulley on the WD-9

sflem849 · Oct 5, 2011

I saw somewhere in my research that a bearing separator should be used in conjunction with a 3 jaw puller to remove the crank pulley. Is that absolutely necessary? Are there any other ways to get the pulley off? As long as I am asking, are there any tricks to getting the set screw out (other than heat and penetrating oil)

Nebraska Cowman · Oct 6, 2011

Anytime you pull on a cast pulley with a jaw puller
you will break it. I generally drill holes in the
pulley close to the hub and pull with bolts.

sflem849 · Oct 6, 2011

Won't that mess with the balance?

mkirsch · Oct 6, 2011

Front pulleys can be stubborn. There are a couple of guys here that have fashioned power pullers from heavy plate steel and 12-20 ton bottle jacks. Even then they have been defeated by a badly stuck pulley.

You don't want to pull on the pulley without AT LEAST a bearing separator. Even if you heat the pulley with a torch, it still may pull harder than the belt flange can take.

We pulled the front pulley on our M with just a puller and heat, but I think we were VERY lucky.

Bearing separators are relatively cheap and a good addition to your toolbox.

gene bender · Oct 6, 2011

how could that affect the balance when the pulley has a key

sflem849 · Oct 6, 2011

You are removing material and if you don't do it evenly it will make it off balance. I guess I don't understand how it couldn't.

Removing crank pulley on the WD-9

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sflem849

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