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  #21  
Old June 28th, 2012, 09:24 AM
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Carl Jonsson
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No , only when moving.

Quote:
Originally Posted by crown14

On the pinion of the front or rear differential.

Does it ever make the noise when it is sitting still?
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  #22  
Old June 28th, 2012, 09:25 AM
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Daniel Marcello
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If the mud shield is loose it might be it.
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  #23  
Old June 28th, 2012, 09:26 AM
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Carl Jonsson
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Is this difficult? I've never done it. Is it just a matter of tightening something or do I need to replace a part?

Quote:
Originally Posted by owen

IMHO the U joint slop is the first one to fix. That could be the noise - and it needs fixing anyway.
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  #24  
Old June 28th, 2012, 09:27 AM
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Carl Jonsson
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Thanks for the pic. Very helpful.

Quote:
Originally Posted by ini88
If the mud shield is loose it might be it.
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  #25  
Old June 28th, 2012, 12:37 PM
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There is an easy way or a "harder" way.

Easy way - hit it with a flat head or something to make it stay in place and not make noise.

Hard way - take driveshaft off and undo nut and take the flange off to see if you can get it to stay.

Honestly see if its the problem. See if you can move it with your hands. I hit mine with a screwdriver and hammer and got it to stop. Its something thats really not even needed on the truck. its a "dust" shield.... and last time I checked my truck has dust and mud all over it.
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  #26  
Old July 5th, 2012, 05:03 PM
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I checked the diff oil level and its fine so the noise is not coming due to diff or gear box oil being low.

The dust shield has come out a few MM but doesn't move.

The front driveshaft has about 1-2MM play when pushing the U-joint side to side on the shaft closest to the transfer case. Not sure banging on it will tighten it up as there seems to be some play. How do I fix this? Also when twisting the front driveshaft it moves about 8-10MM back and forth whereas the rear one doesn't move at all. Is this considered normal?

What else could it be? Worn gears in transfer case?
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  #27  
Old July 5th, 2012, 05:47 PM
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Here are some images of the front driveshaft. The dust shield is actually not that far out and won't seem to move.
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  #28  
Old July 5th, 2012, 05:57 PM
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I would put a new u-joint in the front drive shaft. It's not urgent but the wear on that u-joint will be more and more and then it will get bad real fast.

The front shaft should move back and forth a little bit. It's just slack in the transfercase. Remember nothing is locked and power should be transfered more to the rear tires.
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  #29  
Old July 6th, 2012, 11:00 PM
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Some new developments in my noise investigation. It sounds like the sound is coming from something that is exposed to the outside on the underside of the truck more so than something that is encased (inside tranny or gearbox). I also noticed that the intensity of the sound slows down when gradually coming to a stop. I also noticed its "revolving" or cyclically repetitive noise. This makes me suspect the U-joints or some other part on the driveshafts. I think I'm just going to go for it and replace both driveshafts and be done with it intend of just trying to replace the u-joints. Who stocks driveshafts on this side of the pond?
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  #30  
Old July 6th, 2012, 11:07 PM
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Next question. There appears to exist a 300tdi specific propshafts. Since I have an NASD90 that has been converted to 300tdi I assume this is the type of propshaft I should get over the generic 4 Cyl 90 type?
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  #31  
Old July 6th, 2012, 11:11 PM
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You can remove the front driveshaft, engage diff lock and drive it..if the noise is gone then its fairly safe to say its the driveshaft.., you can do the same with removing the rear also...you could even try removing both at once, that should definitely make the noise go away..LOL..
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  #32  
Old July 7th, 2012, 09:49 AM
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Quote:
Originally Posted by Manimal
Next question. There appears to exist a 300tdi specific propshafts. Since I have an NASD90 that has been converted to 300tdi I assume this is the type of propshaft I should get over the generic 4 Cyl 90 type?
What is wrong with your driveshafts? It is normal for u-joints to wear and they are designed to be replaced. Suggest keeping your shafts and replacing the u-joints only.
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  #33  
Old July 7th, 2012, 10:06 AM
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Well they may be up to 17 years old for one. I wasn't sure if there are other components on them that would wear other than U-joints. They telescope right? Mine are missing the rubber boots. I thought I'd replace the whole assembly just in case. My plan is to replace every component on the rig until it is brand new.

If I have an OME set up but no lift or extremely articulating shocks does it wear excessively on the U-joints/propshafts when offroading? I saw you can get propshafts that allow for a higher degree of articulation for trucks with extreme suspension set ups. Not that I have that, just curious about the stress offroading creates.
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  #34  
Old July 8th, 2012, 07:58 PM
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Carl Jonsson
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New Propshafts have been ordered.

I also ordered HD U-Joints. I think they are for 110 but it should fit 90 propshafts right? Aren't they essentially the same except for length?
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  #35  
Old July 8th, 2012, 10:53 PM
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My understanding - from a wrenching session at Galpins - is the 110 uj's will not fit a 90.
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  #36  
Old July 9th, 2012, 12:01 AM
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Carl Jonsson
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Damit. I will have to change the order then.

Do they make an HD version for 90's?


Quote:
Originally Posted by nathanwind
My understanding - from a wrenching session at Galpins - is the 110 uj's will not fit a 90.
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  #37  
Old July 9th, 2012, 09:52 AM
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On Trevor's site he says that Part# TVC100010 U-Joints (the ones I ordered) will fit both 90 and 110. Can anyone confirm this?
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  #38  
Old July 12th, 2012, 11:28 AM
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According to the warehouse manager at Paddocks the 110 HD U-joints will still fit a 90 even though the shoulders are a bit larger. They're cheap enough that I am going to take a chance on them.
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