Pedal Cluster Disassembly

[jaudette3]

I'm disassembling a pedal cluster in order to install new bronze bushings (and spiff things up a bit) and I'm having a hard time punching out the roll pin. I'm soaking it in Kroil overnight, but do I need to use heat?

Thanks,
JohnA

[Mr9146]

A smoke wrench will set you free.

GET THE TORCH!!

It'll make your life a whole lot easier. Oh, and hire a friend to hold the cluster while you hammer the pin.

[66S]

Try a bigger hammer Turn the pedal arm around the shaft when removing it to avoid sticking.

[davep]

Since I have to do this often, and hate causing injury to myself, I'm looking at making a tool to press it out. Starting with something like this Pitman arm puller with a V-block to hold the joint. Then modify the shaft into a pin tip to press the pin out.
Oh yeah, I hate to use heat indiscriminately since it can ruin the temper of some parts and/or cause other damage. I've not found heat to be useful in this instance. I recently took 10 clusters apart, and the real difficulty is holding the joint securely so that you can hammer the pin.

[RSTarga]

Just wait until you try and put the new pin in while keeping everything aligned. I think I used a similar diameter bolt to keep things aligned while I drove the new one in. maybe you can do the same to drive the old one out.

[Cliff]

Here is a foto of a Park Tool USA crank arm press for R&R of older cheap crank arms with the taper pin. This is a Park Tool #B042 , don`t know if this is currently in production?........It will work!......Cliff

[Cliff]

Here is the foto of the Park Tool crank pin press

[jaudette3]

I brought the pedal cluster over to the shop I use and asked Jonathan there to help me. He said no problem. He secured the entire mechanism in a large vice and with a relatively small hammer punched the roll pin out easily. It appears that the key is to have things really secure before pounding on it.

Thanks for the help!

Cheers,
JohnA