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Old April 25th, 2012, 07:59 PM   #1
mikeb2275
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dana 35 axle noise question

I have a dana 35 with a detroit locker and 4.88's. I installed this setup about a month ago on my first try I got the crush sleeve to tight going by specs. off mitchell so got a new crush sleeve started over. I have all new bearing and races seem to have good rolling torque but I am getting humming noise that starts at low speed and gets louder as speed increases but if you stop accelerating the noise goes away until you almost come to a stop then you can hear it just alittle. Any help would be great also if there is anybody in my area that would be will to give me a hand would be great, thanks
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Old April 25th, 2012, 09:58 PM   #2
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Mine made a similar noise when it did not have enough preload on the carrier (bearings failed). How was your preload?
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Old April 25th, 2012, 09:59 PM   #3
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Also, how confident are you that you didn't over tighten the crush collar again?
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Old April 25th, 2012, 10:00 PM   #4
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Funny.... Same thing just started on my TJ a few days ago.. D35 with Lockrite locker and 3.07 gears.
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Old April 25th, 2012, 10:00 PM   #5
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Do your self a favor and get rid of the crush sleeve,they have a hard time keeping the pinion tight.You can get a solid pinion spacer kit from anyone that sells diff. Parts,it's a bit of a pita to install,but well worth it.
I never have good luck setting pinion bearing to a spec.I have to do it with no diff in the way. I install the (crush sleeve)solid spacer with all the shims on it and remove them one at a time untill the pinion feels correct.With a little oil on the bearings,I give the yoke a spin,as fast as I can,when the preload feels right the yoke will make about one revolotion,after you take your hand off of it.I realize this isn't the correct way,but I've built a lot of axles over the last twenty yrs and they never make noise,and dont fail.
A loose pinion will deff change pitch under drive/coast conditions,if you snug it up a little (carefully) and your noise goes away,and then comes back in a few days,your bearings are smoked.
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Old April 26th, 2012, 06:47 AM   #6
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I beleave my preload was good and with the crush sleeve I tighten the pinion nut slowly until I had no in an out travel in my yoke then I went just alittle more to get my rolling torque with in specs of 15-25 in. pounds

I could not find crush sleeve eliminator kit for the dana 35
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Old April 26th, 2012, 10:16 PM   #7
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What about your carrier preload?
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Old April 27th, 2012, 09:01 PM   #8
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looks like I'm going to take it apart again to double check some things
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Old April 27th, 2012, 10:22 PM   #9
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I've never found that the crush collars have any issues but surely it is safer replacing the yoke seal without the collar.
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Old April 28th, 2012, 08:18 AM   #10
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Nothin like giving you bad advice,I cant seem to find a solid spacer either.I thought for sure I put one in my 35 when I put a trutrac in it.I cant believe they dont sell one for a 35,it's the most common thing for a chev 10 bolt,I put one in every axle I do.

Yep,best to pull it apart and check it out,parts are exspensive.

I will say that most pinion noise I have heard is from being to loose,or the bearings are on the way out.good luck.
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Old May 31st, 2012, 05:58 AM   #11
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How did you make out?
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Old May 31st, 2012, 01:54 PM   #12
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found I needed to reshim my pinion and that took alot of my noise away but I still need to get a shim kit and adjust my carrier alittle more
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