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Rear diff noise, hard to turn axle and driveshaft

  • Thread starter Thread starter DeathProof88
  • Start date Start date May 23, 2024

DeathProof88

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Dec 11, 2015
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May 23, 2024
#1
  • May 23, 2024
  • #1
Looks like I made another goof. I just did the cobra brake swap with new axle bearings and I replaced the pinion seal and trac loc before that. I didn't notice this problem before the brake swap, but maybe I wasn't playing attention? So, if I turn the axles or driveshaft in the forwards direction it is very tough to turn. If a spin the driveshaft in reverse it feels fine, very easy. If I spin an axle in reverse, it's easy but I hear a crunchy noise in the diff. I tried my best to get the pinion nut back on in the same spot (with a little extra oomf). Could I have wrecked the crush washer by accident and it's catastrophic?? I'm asking today because that outside of skill set to replace. But could it be something I can fix? Like I didn't put the trac loc together properly? Or I knocked something loose when I used a slide hammer on the axle bearings? BTW the car is still in the build stages so I'm not driving it, nor can I lol
 

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
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Claremore, OK
May 23, 2024
#2
  • May 23, 2024
  • #2
This is why I don’t use crush washers. Had a pinion seal leak a little while ago and swapped it out with zero issues. I run Ra-Tech solid spacers with shims.

4105

I understand this is possibly a day late and dollar short in this case but thought I would post it for future use.
 
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DeathProof88

Active Member
Dec 11, 2015
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May 23, 2024
#3
  • May 23, 2024
  • #3
AeroCoupe said:
This is why I don’t use crush washers. Had a pinion seal leak a little while ago and swapped it out with zero issues. I run Ra-Tech solid spacers with shims.

4105

I understand this is possibly a day late and dollar short in this case but thought I would post it for future use.
Click to expand...
A day late in respect to me not measuring the crush washer to get a shim? I mean, atleast I didn't drive it.. the gears must be fine still. I guess I'm going to have to dump out the new gear oil for the second time and dive in. Just when I get the friction modifier smell out, it drags me back in! 15 bucks? I wish I knew sooner. Would the consensus be that I muffed the backlash? The noise it makes is cringeworthy.
 

nickyb

I gotta say i never painted my nuts, Never Ever
15 Year Member
Apr 3, 2009
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nevada
May 23, 2024
#4
  • May 23, 2024
  • #4
DeathProof88 said:
A day late in respect to me not measuring the crush washer to get a shim? I mean, atleast I didn't drive it.. the gears must be fine still. I guess I'm going to have to dump out the new gear oil for the second time and dive in. Just when I get the friction modifier smell out, it drags me back in! 15 bucks? I wish I knew sooner. Would the consensus be that I muffed the backlash? The noise it makes is cringeworthy.
Click to expand...
Save the rear end lube and reuse ,I mean you didn't drive it. If you like filter it threw some cheese cloth.
 
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AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
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May 23, 2024
#5
  • May 23, 2024
  • #5
I’d say you are completely good to go gear wise and it just needs to be set back up.

I know Summit Racing carries the Ra-Tech parts if that’s a possibility.
 
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limp

wrap a little cheese around it and its a done
5 Year Member
Oct 4, 2020
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May 24, 2024
#6
  • May 24, 2024
  • #6
Did you reuse the crush washer? These are one time use only items..

I only use solid spacers like what Aerocoupe does....
 
Reactions: 91 Black Hole

DeathProof88

Active Member
Dec 11, 2015
99
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PA
May 24, 2024
#7
  • May 24, 2024
  • #7
limp said:
Did you reuse the crush washer? These are one time use only items..

I only use solid spacers like what Aerocoupe does....
Click to expand...
All I did was replace the pinion seal following the instructions from lmr's video carefully. But I also replaced the trac loc and axle bearings
 

limp

wrap a little cheese around it and its a done
5 Year Member
Oct 4, 2020
5,467
2,902
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Florida
May 24, 2024
#8
  • May 24, 2024
  • #8
DeathProof88 said:
All I did was replace the pinion seal following the instructions from lmr's video carefully. But I also replaced the trac loc and axle bearings
Click to expand...
I guess you will be doing it again
 
Reactions: DeathProof88

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
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#9
  • May 24, 2024
  • #9
Above my pay grade
 
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