Rear sprocket bolts are seized

2002 VFR. Changing the sprockets and chain for the first time. Went to loosen the rear sprocket bolts and they are not wanting to turn. Just sprayed some PB Blaster and will let them soak for a bit.

Any tips would be appreciated.

 

You could try some heat to the nuts if the PB doesn't work.

 

Patience... that would be my recommendation.

The PB Blaster is a good start. Now heat the bolts up with a heat gun, then cool them, then heat up the area of the hub that the bolts thread into, then heat the bolts up again, then cool them again, apply more PB Blaster in between heating cycles, then heat the hub up one last time (you want the metal of the hub to expand to release the bolts) and try to loosen the bolts. The heating-cooling cycle in both the bolts and the hub creates micro-movement that "cracks" the grip that the bolt threads have inside the wheel hub.

 

What Greg said , heat is your friend here. I could not for the life of me undo the big 43mm nut from the rear hub. Got the heat gun on it and she undid quite easily. Just don't go and pick it up straight afterwards. Good luck

 

If you have an impact gun, use it...with care. An impact is far better than a wrench or socket and ratchet.

 

Impact wrench. I got the cheapie from Harbor Freight, and is did not seem to produce much of a strong impact, but after a minute or so hammering away,
it did the job.

 

I do love my electric impact wrench. I have used it perhaps 6 times since I bought it two years ago, but each time has been a hallelujah moment. Much better to keep a good fitting 6-point socket on a nut and let the hammer action shift it along. Worked wonderfully on my 30-year old ST1100 rear brake disc hex-head bolts just last week, where I'm sure these would have rounded out with a conventional breaker bar and sweat.

 

Okay, earlier I soaked with PB Blaster and went to Jiu-Jitsu practice. Came back and they came loose for me.

Bought the 2002 bike used 4 years ago. I can tell that work was done here before (chain cover screw head was stripped). So much gunk to clean up.

Gonna take my time and get everything looking brand new. Will probably have apart for a few days.

Thanks for all the input. Will probably be back on here this week.

 

That sounds about right.

 

Remember, impact wrench for removal only!

 

LOL. It would seem obvious, but sweating away in the garage, a reminder is not a bad thing.

 

Quite right Allyance. My el-cheapo impact driver is electric and has an easy to use/easy to confuse rocker switch to loosen or tighten, not the most inspired bit of design. Every time I use it, I have to give it a test spin to make sure I go the right way.

 

Don't underestimate the torque of a cordless impact driver. Mine, a 8 or 9 year of Bosch, well before the day and age of brushless power tools with far more torque, twisted a steel bit so that it looked like a twisted wrought iron railing spindle when I was trying to remove a corroded bolt from my lawn mower. These cordless impact drivers are powerful tools, especially the new blue tooth brushless tools.