bluegoose

I have a 1989, 305, TBI. I would like to remove the lower timing gear and replace, however I can not remove it. I tried to use a puller, but it failed. It looks like to me to be a part of the crank. Please help. All comments will be greatly appreciated.

Thanks,
Brad

RB83L69

A puller is the correct thing. You might not have had the right kind of one or something.

How did it not work? did it slip off? or break? or what?

Try a different one. Also, put a bolt in the end of the crank, so you don't accidentally screw up the balancr bolt threads.

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"So many Mustangs, so little time..."
ICON Motorsports

bluegoose

The puller has three hooks on it. No it did not slip off. I just didn't want to put a lot of pressure on it. Plus the crank was starting to turn. Is the guide pin suppose to come out first or after I remover the gear?

RB83L69

Try putting the puller back on, and tighten it until the crank starts to turn; then tap on the wrench you're using on it with a hammer, and tap on the gear gently with a hammer, then tighten it some more, etc. Impact (in small doses!) works better on that sort of thing than steady pressure. A little heat on the gear, like a propane torch with a 2" flame, might be persuasive to it too. Once it breaks loose it should come right off.

There's no pin; but the Woodruff key, which is the square sort of thing sticking out of the crank that aligns everything, should stay on the crank. If it falls out you can tap it back in; or even go to the store and get a new one. Auto Zone and such places have them in the Help aisle. Or if you go to a real parts store, they'll be able to get the right thing just by description (SBC crank key)

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"So many Mustangs, so little time..."
ICON Motorsports

JoelOl75

Use a torch to heat the gear up with the puller already on there. Once it gets hot, it'll come right off.

To install the new gear, toss it in a pot of boiling water and as quickly as you can, line up the keyway (Use the right one for your app as some have 3 <usually never use the 4 degrees retarded>) and hammer it on with a 1 1/2" socket.

rezinn

Easy way, have someone hold the flywheel and do it. Otherwise its gonna turn and your gonna swear

Easier way is to cook the crank gear at about 450 degrees for 25 minutes and it will slip right on, work fast because it cools as soon as it touches the crank. Use some gloves, too.