The subject says it all. How do I get the cam belt wheels off this bloody mini motor?

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Chris

Everything I like is either
illegal, immoral or fattening.

Do you mean the harmonic Balancer? If so two screwdriver, one on each side and wiggle, no not you the screwdrivers.... (it's late and i am tired) it's a snug fit as there is an oil seal on it.

Cheers

Aaron

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can someone explain what a harmonic balancer is?
ive heard it many times

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No. This motor has a belt drive for the camshaft and I can't get the wheels off the cam or crank without risk of damaging them.

_________________
Chris

Everything I like is either
illegal, immoral or fattening.

it's the thing that is on the end of the crank on th near side of the car it drives the fan a water pump.

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FOR SALE MInidlx, 1293, GR head, RE-13, GR worked Redline Manifold, 45 mm DCOE,pulsar dizzy , "S" Disc's, Mk II "S" box, 3.65 diff. Minator 10X6's On the loose

It is the large pulley at the bottom of the motor which the fan belt goes round.

_________________
Chris

Everything I like is either
illegal, immoral or fattening.

arnt they just on a keyway in which case you could just use a bearing puller

I have never seen timing gears which needed a puller. I am also not sure if the intermediate plate behind the gear comes off with the gears. No ordinary gear puller I have seen would get behind the cam wheel from the looks of it as there is not enough space.

_________________
Chris

Everything I like is either
illegal, immoral or fattening.

You use a bearing puller, carefully so you don't bruise the edges of the teeth. If this happens you need to polish any bruises out before refitting the belt.
I polished the bore of the bottom gear so it's an easy slip on fit to the crank. They are made too tight I reckon..

<edit> my puller is a `Crab' 2 leg puller. Nothing special.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

why does that pulley/disc have such a fancy name?

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On 1098 motors, and all the Cooper & S's, it's not just a `pulley'. These `harmonic balancers' have a heavy steel ring bonded (vulcanised) to the inner pulley part with rubber. As the crankshaft vibrates torsionally under load (they all do), this decoupled mass damps these vibrations and reduces the likelihood of crank breakage..

Whenever you have one off, look at the state of the rubber in between. If cracked or bits missing, chuck it away and get another.
It is possible to get the S ones rebonded for $100+, but with the 1100 style ones it's not worth it when you can buy a newie for ~$75 or so.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

ahh.

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