HOW TO: BREAK A CHAIN, WITH THE RIGHT TOOL, IT’S CAKE

Over the years we’ve witnessed some horrendous attempts at a simple chain install. More often than not, you’re going to have to size the new chain to fit, and this requires the removal of links. Now there are options here; you can grind off the pins at a precise point, then reassemble, or you can use a chain breaker. We’ve had a Motion Pro unit in our toolbox for years (it was actually the first tool that they ever put on the market) and have used it hundreds of times. There is a method to the madness, and we actually went to Motion Pro’s website where they have a great tutorial. If in doubt, check out www.motionpro.com and go to the Tech section.

SETUP:
This is the key to a quick and dirty job. Retract the body bolt so that you can put the breaker over the chain. Position the pin (with it pulled back about 1mm) so that the pin will not fall out of its guide hole. The pin on the breaker must push directly onto the chain pin; otherwise it will smash into the chain plate and ultimately break the pin. This is bad.

PUT THE BREAKER ON THE CHAIN:
With the pin set up correctly, attach the breaker to the chain. The breaker body has a recess in the end of the body bolt that will go over the exposed chain pin. When tightening the body bolt, just snug it tight. Remember, you don’t want the breaker pin to be misaligned.

BREAK THE CHAIN:
Now comes the easy part. Tighten down the extractor pin; this drives the breaker pin into the chain pin. With a minor amount of elbow grease, tighten it slowly and continue until the chain pin gets pushed out the back of the breaker. Once it’s out, you’ve successfully modified your chain to fit onto the drive system of your machine.

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