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Bruce Lancaster · 04-24-2015, 04:36 PM

pgerhardt...that is a Snap-on Dreadnaught puller. The 3 arms are for the lug patterns like Mopar and Studebaker that were a bit smaller than the For 5 1/2" circle.
It came with two extra arms (arms snap out with puller relaxed) to pull Ford hubs from the groove, same general approach as a Ford KRW puller.
This made the pull much safer for the hub and also made it fully usable on the '36-9 Fords with gigantic pattern.
The large Ford bolt circle and the very high load put into the hub/axle joint by proper tightening makes it possible to permanently warp hubs and even split brake drums on really tight pulls.
Ford expected the hubs to be pulled from central ring, and the good tool companies like KRW, Snap on, and Plomb all sold rigs that could do that. KRW was Ford groove only, Plomb and Snap on made their generic 3 arm pullers with special rigs for Ford use.

04-24-2015, 04:36 PM	#7
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: rear hub puller pgerhardt...that is a Snap-on Dreadnaught puller. The 3 arms are for the lug patterns like Mopar and Studebaker that were a bit smaller than the For 5 1/2" circle. It came with two extra arms (arms snap out with puller relaxed) to pull Ford hubs from the groove, same general approach as a Ford KRW puller. This made the pull much safer for the hub and also made it fully usable on the '36-9 Fords with gigantic pattern. The large Ford bolt circle and the very high load put into the hub/axle joint by proper tightening makes it possible to permanently warp hubs and even split brake drums on really tight pulls. Ford expected the hubs to be pulled from central ring, and the good tool companies like KRW, Snap on, and Plomb all sold rigs that could do that. KRW was Ford groove only, Plomb and Snap on made their generic 3 arm pullers with special rigs for Ford use.