Seized Chain Tension Adjuster Bolt
Posted on March 16, 2010
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I recently had the misfortune of my chain adjuster bolt all but seizing up on my crf450r. The bolt couldn’t be turned without stripping the head of the bolt. The only way I could adjust the chain was to remove the axle and use a socket to cup the bolt end to avoid stripping it.
Chain Tension Adjuster Bolt
With a few squirts of INOX lubricant (like CRC), quite a few actually combined with working the bolt in and out a few times using a socket wrench I managed to return the movement to normal. It’s surprising how much heartache a little bit of build up can do. There was only a small amount of build up on the bolt but this was enough to almost completely seize it.
The lesson here is to always spray on some anti rust/lubricant on all adjustable bolts and other parts that are exposed to water and such. I regularly spray my spoke nipples, foot peg springs so I’ll add chain tension bolt to the list of maintenance items.
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