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Norge suspension linkage bolt seized

B

brodonn

Tuned and Synch'ed
GT Famiglia
Joined
Mar 6, 2010
Messages
35
I hear a lot of criticism about the rear suspension bearings not being lubricated at the factory. In the case of my son's 2009/2010 Norge the bearings had been lubricated but the head of the bolt that fixes the rear shock linkage to the swing arm casting is completely seized in the block of the casting. we've been spraying various release agents on it and trying to free it regularly for some weeks now, while the bike was apart for a clutch/gearbox job, but there's no sign of it shifting. The linkage is turning freely but the head of the bolt is stuck fast. it has been steeping in diesel for the last week, but still no joy. I'm going to put some heat on it tomorrow to see if that will help, although I don't like heating a casting locally. I was wondering if anyone else has had this particular problem and what methods might they have used to free it. I've seen a lot of seized fasteners in my 50 years of working with this stuff, but this is a real sticker.
Thanks for any help offered.

Brian
 
Heat is probably going to work to get at least a bit of movement or to get the oxide to fracture. But the best tested penetrating oil is home made, 50% Acetone and 50% ATF(automatic transmission fluid). You'll find the test results on the web somewhere.
 
jr1967 said:
Heat is probably going to work to get at least a bit of movement or to get the oxide to fracture. But the best tested penetrating oil is home made, 50% Acetone and 50% ATF(automatic transmission fluid). You'll find the test results on the web somewhere.
Click to expand...
That mix might just be what will do it for me. I put a fair amount of heat on it today, but no joy. It's incredible. I'm concerned about cracking the casting,so thanks for that tip. I have some ATF and I can get Acetone on Monday, so I've pushed the temptation to cut metal to the back of my mind again.
 
You might get lucky by rattling it gently with an air impact wrench for a bit as well. once it turns you might also find that the inner bearing race is seized on the bolt
 
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