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FXDF Exhaust Bracket Torque?

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Old Mar 5, 2013 | 09:57 AM
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From: Ardrossan, AB
Default FXDF Exhaust Bracket Torque?

I haven't picked up a service manual yet for the '10 Fat Bob I bought a few weeks ago. Can someone please let me know what the exhaust bracket studs and bolt should be torqued to? Want to keep them tight and hopefully avoid problems.
 
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Old Mar 5, 2013 | 12:48 PM
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The nuts and bolt are all 15-19 ft-lb.

Do yourself a favour - replace the studs and bolt with high tensile. They will almost certainly shear off at some point.
 
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Old Mar 5, 2013 | 02:55 PM
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Thanks, will check them tonight and upgrade the bolt and studs soon.
 
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Old Mar 5, 2013 | 03:56 PM
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According to my 2012 Dyna Service Manual: Muffler bracket flange nuts and bolt torque to 15 - 19 ft-lbs.
 
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Old Mar 5, 2013 | 05:13 PM
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The recipe is tighten them in until all four have the same amount of "snug" and a1/4 turn from there, and re-check them after a 50 mile ride, once the engine has completely cooled. If your talking about the flange nuts, that is, because it will be difficult to get a torque wrench in there. If you mean the brackets that hold the system to the frame good'ntight like a german virgin without undue stress of course and re-check them too!
 
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Old Mar 5, 2013 | 05:18 PM
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Originally Posted by maddghost
The recipe is tighten them in until all four have the same amount of "snug" and a1/4 turn from there, and re-check them after a 50 mile ride, once the engine has completely cooled. If your talking about the flange nuts, that is, because it will be difficult to get a torque wrench in there. If you mean the brackets that hold the system to the frame good'ntight like a german virgin without undue stress of course and re-check them too!
Yup, he means the exhaust hanger bracket, rather than the nuts on the studs at the flange.

You have to be a bit careful with "good'ntight like a german virgin without undue stress"...these bolts have sheared off for a lot of Fat Bob owners, over or under-tightening might contribute to this. They really are just a bit crap and need replacing with HT.
 
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Old Mar 5, 2013 | 06:06 PM
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Originally Posted by Foxster
Yup, he means the exhaust hanger bracket, rather than the nuts on the studs at the flange.

You have to be a bit careful with "good'ntight like a german virgin without undue stress"...these bolts have sheared off for a lot of Fat Bob owners, over or under-tightening might contribute to this. They really are just a bit crap and need replacing with HT.
Yes agreed and the worse problem is the cast aluminum housing the bolts screw into that can easily be stripped. I know I had to oversize on after the dealer played with it years back. So stronger bolts do not mean they can be over-tightened.

And by reading through the previous posts it would seem the flange nuts and mounting hardware have the same torque value.
 
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Old May 27, 2013 | 06:22 PM
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Anyone have a good online source for replacement high tensile bolts and studs? All I can find around here are the gold grade 8 bolts.
 
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Old Jul 1, 2013 | 01:38 PM
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Digging this thread up. Foxster did you replace yours? Do you have part #'s or dimensions ?
 
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