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  #21  
Old 12-05-2012, 03:40 PM
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DaveInDenver DaveInDenver is offline
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I have an Aussie and get some thumping as well. I've noticed that an Aussie will highlight any driveline noise you have, in my case it seems to be that my poly spring bushings need replacement and/or lube. When I spray them with silicone or white lithium the noise stops for a while, so seems the axle wants to wind up a little on acceleration and the bushings are creaking.

Another thing to watch is that your tires don't have slightly different diameters or inflation, this exacerbates the thumping, clicking, normalizing bangs and what not. When I take time to match the rear tires to a gnat's rear I notice that I extremely rarely will get that pit-of-your-stomach bang.

I personally take round-abouts and sharp turns with the clutch disengaged, it's a very refined skill. Accelerate a bit more than normal heading into and coast through.
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  #22  
Old 12-05-2012, 06:21 PM
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Quote:
Originally Posted by kurtnkegger View Post
Thanks Jeff. I measured, double checked, and rechecked to make sure the spacing from the thrust washers was within the specs on the install sheet. I put it in about two years ago, and re-used the thrust washers that were in there already because the spacing worked. Do you suggest I open her back up and take another look? I only get noise at tight turns on pavement with the clutch depressed.
No, if you were withing spec, chances are you are good to go. And what I was referring to in my above post about how you finesse the throttle applies to what you wrote about tight turns with the clutch in. You will discover that if you are in a parking lot, you will need to apply just a slight amount of throttle when making those tight turns, believe it or not. That quiets things right down!
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  #23  
Old 12-05-2012, 06:23 PM
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Rzeppa Rzeppa is offline
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I agree with what Dave said about tire diameter and inflation. I do a 5 tire rotation so if I get a flat (it has happened on 2 trail runs in the last 15 years) all my tires have the same wear. And you want to keep those rears inflated to withing 1/2PSI of each other.

Instead of putting in the clutch on roundabouts, I get better results from slight throttle, just above idle.
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  #24  
Old 12-05-2012, 07:07 PM
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Quote:
Originally Posted by Rzeppa View Post
I agree with what Dave said about tire diameter and inflation. I do a 5 tire rotation so if I get a flat (it has happened on 2 trail runs in the last 15 years) all my tires have the same wear. And you want to keep those rears inflated to withing 1/2PSI of each other.

Instead of putting in the clutch on roundabouts, I get better results from slight throttle, just above idle.
That works too, just enough throttle to keep the locker locked with the mild risk of some tire scrub. You do get some confused looks when the mighty 22R-E tries to smoke 'em accelerating through a turn, though!
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  #25  
Old 12-05-2012, 08:58 PM
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Alright folks, I went on a beer run tonight with the 40 (Magic Hat Brewing Company...excellent but pricey) and tried to key in on my thumping noise during the drive. It's not locker related IMHO. It's related to the clutch. The noise only occurs when I depress the clutch. I can hear barely hear it with normal shifting but it's much worse on coasting turns. Something ain't right. I live close to SteveH...Hey Steve, I need some help diagnosing this noise!
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  #26  
Old 12-06-2012, 08:05 AM
SteveH SteveH is offline
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Stop by my place (or my office) and we'll give it a listen. I even drove my '40 today. Should be home some this weekend. PM me.
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  #27  
Old 12-06-2012, 10:05 AM
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Quote:
Originally Posted by SteveH View Post
Stop by my place (or my office) and we'll give it a listen. I even drove my '40 today. Should be home some this weekend. PM me.
Nice....
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  #28  
Old 12-08-2012, 01:53 PM
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SteveH did a once over on the 40 this morning. We compared how much slop my rear driveshaft had compared to his 40. Mine turned about 7/8" before it engaged and his almost immediately engaged. We are thinking the lash may be off in the R&P which is causing quite a bit of slop in the drive train. I'm going to pull the diff cover and check it out. I'm a newb when it comes to lash adjustment...any advice would be appreciated.
Also, Steve helped me clean, lube and tighten my center pivet arm, which greatly reduced my steering slop. Thanks Steve!!
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  #29  
Old 12-08-2012, 08:13 PM
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Cool! any progress is good progress.

But man if I had the diff cover off, and I already had all the shims for the side gears, I'd be real tempted to just.. well... Would allow you to say definitively that yup, it's not the Aussie...
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  #30  
Old 12-08-2012, 08:37 PM
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subzali subzali is offline
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Sounds like he may have to do a ring and pinion backlash adjustment. Best way to check would be to get some gear marking compound and check it out. Should be able to check on the vehicle I would think.

By the way the front and rear diffs are 100% interchangeable - too bad you just buttoned your front end back up Could have swapped the two to have the one with less wear in the rear.
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