worn screws

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Old 01-23-2019, 10:18 AM
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Can worn Volvo Driveline (driveshaft) Flange Bolts affect or cause vibrations on driveline (driveshaft) (1995 940 non turbo sedan)

 
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Old 01-23-2019, 10:51 AM
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Originally Posted by corsso View Post

Can worn Volvo Driveline (driveshaft) Flange Bolts affect or cause vibrations on driveline (driveshaft) (1995 940 non turbo sedan)

Only if they are not tight.
 
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Old 01-23-2019, 11:08 AM
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Thanks jagtoes!
 
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Old 01-24-2019, 07:56 PM
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commonest cause of driveshaft vibration is the center bearing and its carrier bushing.

I would probably replace those driveshaft flange bolts if and only if had to disconnect the driveshaft, for instance to pull the transmission, or to R&R the center bearing. if you have to disconnect the driveshaft spline be absolutely sure to mark both sides of the spline so you reassemble it in th exact same orientation, as the assembly was balanced at the factory.
 
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Old 01-28-2019, 05:10 AM
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Originally Posted by pierce View Post
commonest cause of driveshaft vibration is the center bearing and its carrier bushing.

I would probably replace those driveshaft flange bolts if and only if had to disconnect the driveshaft, for instance to pull the transmission, or to R&R the center bearing. if you have to disconnect the driveshaft spline be absolutely sure to mark both sides of the spline so you reassemble it in th exact same orientation, as the assembly was balanced at the factory.
Thanks pierce!
 
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Old 02-02-2019, 10:04 AM
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Pierce, I just had drive train (drive shaft) replaced on my 1995 Volvo 940 2.3 sedan/non turbo. The replacement part is a used item and I used the bolts that were on the replaced or original shaft. Is there an urgent need to replace the bolts with new ones. What is the risk, thanks!
 
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Old 02-02-2019, 02:51 PM
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as long as they were in OK shape and not stretched or worn, or heavily corroded, they are probably just fine. I just like using new hardware out as a precaution thing.
 
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