bicycle engine total tear down

**Norman** · #31 (**permalink**) 05-28-2009, 10:18 AM

that is something you are going to have to decide for your self I'd try to get another puller and make sure its threaded all the way on use anti seize on the threads of the puller and the gear.
you might be able to use a torch and hammer its not going to be pretty you have a seal behind the gear and you might destroy it getting western on it.
Norman

cbaber48 · #32 (**permalink**) 06-02-2009, 10:41 PM

is there anyway to get the crank gear off with out the use of the impact driver?

cbaber48 · #33 (**permalink**) 06-02-2009, 10:43 PM

i need a way to get the screw out first.. i have a puller that will work... any ideas?

**Norman** · #34 (**permalink**) 06-03-2009, 11:36 AM

make your self a big screw driver blade out of flat steel stock grind it to fit the slot precisely and if you can heat treat the blades tip(google heat treating steel DIYS) its not going to be easy if you don't have the right tools. If you live in a town that has harbor freight you can get an impact driver/remover that you use with a hammer they are not expensive about $10.00 some auto parts stores or cycle shops might sell them. You can lock up the gears with a rag so the gears don't spin while your trying to turn the screw off so don't take all the gears or nuts completely off until you have all fasteners loose holding on the gears and the sprocket.
Norman

Denver Dave · #35 (**permalink**) 06-08-2009, 11:36 AM

Howdy Norman,

I'm looking at post #3 of this thread where you are using the sprocket puller to remove the outer bearing race.

I have my engine completely torn down, and all of the nuts and bolts holding it together are out, but when I went to pull this part off, my tool stripped. From looking at diagrams, it appears I can (carefully) pound out the clutch shaft from the other side (where the drive sprocket was).

Is there anything mechanically holding this in preventing me from doing so? Thanks!

Denver Dave · #36 (**permalink**) 06-08-2009, 11:33 PM

Well, a rubber mallet just answered my question...no, there is nothing in there preventing me from banging it out.

baja221 · #37 (**permalink**) 07-28-2009, 07:26 PM

Quote:

Originally Posted by Norman

after removing the nut and lock washer pull the clutch off with the puller. Well greased isn't it the clutch didn't slip so the grease was not getting on the pads

magnet holding the key. can't see them but there is 2 shims on the shaft and what a nasty thing.

when using the puller how do you keep the middle part from just spinning?
great thread by the way

**Norman** · #38 (**permalink**) 07-29-2009, 02:47 PM

you hold the outer puller with a wrench and turn the inner part of the puller with a wrench. You have to use both hands and 2 wrenches.
Norman

Matheneyr3 · #39 (**permalink**) 08-09-2009, 02:55 PM

Wow-Thanks!

Awesome post, and pics as an added bonus.
Just followed along with you to change out the seals on my little moondog project- and I found it invaluable to refer to...Thanks again, after finding that both of my crankshaft seals were rather...unseated, sorta. One of them had sheared into two seperate seals, and the other had simply pulled away from the seat.
Great to have your assistance on this one! I'm sure that I'm not the only Homebuilder to refer to you for help.
Richard- Orange Moondog- 29mph uphill cruise-Afterwards.