is it spline or tapered with a key?
On my 400 which has tapered with 1/4" keys, I put the puller on with the nut loose, then heated the hub with a map gas soldering torch to expand it. Sounds like a gun going off when they pop loose. Having the nut on is a must if you don't want them to fly three feet.
Pb blaster is a great tool. I got pistons out of a rusted up engine with it, and most of the valves. There was enough rust that the motor was toast, but it got em out. Let them soak in pb overnight and it should loosen up.
On my 400 which has tapered with 1/4" keys, I put the puller on with the nut loose, then heated the hub with a map gas soldering torch to expand it. Sounds like a gun going off when they pop loose. Having the nut on is a must if you don't want them to fly three feet.
Pb blaster is a great tool. I got pistons out of a rusted up engine with it, and most of the valves. There was enough rust that the motor was toast, but it got em out. Let them soak in pb overnight and it should loosen up.
