Intermediate Shaft Chain Wheel Removal

[Fishcop]

Greetings fellow mechanical conspirators....

I have found one of my chain wheels on the intermediate shaft to be shagged... missing several teeth etc...

I have a replacement one, but how the hell do I remove the old one from the shaft? I've removed the circlips and tried mild heat with no luck. I figured with a circlip and keyway that this sprocket should come straight off. It doesn't

Help

Thanks

[dtw]

I tried various means of removing these and could not find a way to do it that didn't risk damaging bearing surfaces or the big aluminum gear. What I ended up doing was taking the shaft to my local mechanic. They let me put the shaft in their hydraulic press; the gears were safely off in less than 5 minutes.

Incidentally, I'd recommend replacing both of your sprockets at the same time, not just one. One more sprockeit is to cheap not to do this.

[Fishcop]

Thanks Dave, you're right about replacing both so I went an bought a second one.

I'll take the shaft to the shop as you suggest.

Cheers

[Jandrews]

Hey Fish,

Was your car running with the teeth missing from the intermediate chain wheel? If so, how did it run? If not, what motivated you to tear it down?


Thanks,

JA

[Fishcop]

JA

I bought the engine from a wreckers with the intention of creating a project... Curse you Wayne!

Basically I don't know how well it ran before, but I suspect it would not have run far had I not decided to split it!

Sorry I can't offer more...

[Groovy911SC]

Okay, I found this post. I got my parts off of the shaft with a hand held gear puller. Does anyone have a good recommendation for getting the new steel gears on the shaft?

Wayne illustrates a way to heat up the timing gear for the crankshaft in a pot of oil heated on the stove. Has anyone used this method for replacing the gears on the intermediate shaft? Is there a better way?

[Fishcop]

I ended up using a torch to heat the gear, I put the shaft in the freezer for an hour and then put a little engine oil on it for lubrication. With a welding glove on I put the heated gear (smoking hot) on and used a piece of pipe as a drift to tap it down in to place.

I'm sure Wayne's method method to heat the gear would be fine too.

[Groovy911SC]

Thanks John!

Were you able to get both gears on at one time? Or did you have to re-freeze?

[ChrisBennet]

For those times when my boiling oil is being used repel attackers at the castle walls I just use a heat gun to heat up gears.
-Chris

[Fishcop]

Groovy, should have said.... No, I had to do them one at a time.

[Groovy911SC]

Here is another solution that worked perfectly. I put both gears on a baking tray and "warmed" them to 400 degrees ( 30 min ). I then quickly slid them on the shaft. They went on easily! Shaft was placed in freezer for about an hour prior. Have to work quick though....