I have a about a 1953 model. has a bad leak on the left rear sprocket. where can I get a puller? I"ve got the nut off. some of you guys have talk about making one what do I need to do that?
There should be two threaded holes in the sprocket hub. Run a tap in them to clean up the threads. The holes will be 5/8" or 3/4". Get some threaded rod that size a good stout piece of box tube and a bottle jack. Drill holes through the tube to match the sprocket. Screw in two long pieces of threaded rod into sprocket slide the tube over the rods. Put the jack between the tube and the end of the shaft tighten down two nuts on the threaded rod to hold jack in place. Pump up the jack to pull sprocket. It may not come easy! If the jack will not pull it, put pressure on it with the jack and wack the back of the sprocket with a large hammer. If it does not come you may need to heat the sprocket hub with a torch. Do not stand in front of it as when it comes free it will jump at you!!
That puller Robert described will work fine. I'd get real good quality rod to make them out of. I pulled a grade 5 bolt in two with my puller.
I made mine out of heavy bar stock about 3/4 x 3 with heavy pieces across the top to push against, and two more pieces on the bottom with just enough space between them for the axle shaft. Another piece sits on top of that with three holes, two for bolting the 5/8 or 3/4 bolts thru and the other for the jack to push on the axle. I use a 20 ton jack and have had sprockets not want to come off with that, so some beating and heat got them off.
I'll try to put up a picture of mine in action. Used to be one on here, but we lost it in a site crash I believe.
Bob
I have just taken two sprockets off my BD....it was not easy, and it took several weeks. I built a puller as described by previous members. I could only fit a 12ton jack in between the threaded rod. I used heat and a sledgehammer. When that didn't work I went to a 20ton jack, wrapping a 3/8 #70 chain through the spokes and over the jack. Don't try this without having your life insurance paid up! It's very dangerous. But even that, with heat and beating on the back of the sprocket didn't work.
What worked for one was using the threaded rod setup. But I replaced the jack with a thick piece of shaft, or big wrist pin, tighten the cross member as much as possible, then beat on the cross member....in toward the stub axle.
However that didn't work on the second one.
The second one came off by beating the opposite way (inward) on the sprocket while having the jack excerting extreme pressure outward. It just popped off after 5 swings.
NOTE: leave the nut on the end to prevent things from flying around.
I have pictures when I figure out how to post them.