Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 


Reply
 
Thread Tools Display Modes
 
Old 12-06-2017, 07:17 PM   #11
Senior Member
 
SierraHawk's Avatar
 
Join Date: Jun 2009
Posts: 323
Apparently Yukon had a bad batch of axle shafts that caused them to come close to bankruptcy. The axle shafts come with a warranty but only for vehicles that have tires that are up to 32". They did not put a number on the axle shaft. Message is that if you have Yukon axles you might want to contact the company and get more information.

I was told that the spline count is 30. After rebuilding the stock carrier and LSD three times I picked up a FF off of a Superduty E350 and put in a Truetrac along with new gears and bearings. Everything worked fine up until now. If anyone knows where I can get a 30 spline axle shaft 30 for a Superduty E350 I would be interested in looking at it.

SierraHawk is offline   Reply With Quote
Old 12-06-2017, 07:54 PM   #12
Senior Member
 
Join Date: Jul 2011
Location: Flagstaff, AZ
Posts: 1,995
Dang, SierraHawk what a hassle. Good luck with it.

The axles I pulled out of the D60FF I got out of a salvage yard from a 2001 E350 were 32 spline. I replaced those with 35 spline Dutchman axles as suggested by LetterJ. Seemed like it took more than a couple of days though. Either way, it seems odd that you ended up with 30 spline axles unless it was required by the truetrac? I'd go 35 spline especially considering all the woes to date.
__________________
2005 E350 RB 6.0 PSD for extended fun
1989 Landcruiser FJ62 for local fun
2011 VW TDI Golf for hwy fun
JoeH is offline   Reply With Quote
Old 12-06-2017, 07:59 PM   #13
Senior Member
 
Join Date: Feb 2014
Location: Santa Maria, CA
Posts: 586
I wouldn't take their word for it, physically count the splines yourself, then count them again. There are certainly 30 spline D60FF's out there, but there are also 32 and 35 spline versions. If you are not 100% positive what year it came out of, or if the spline count was changed at the time the lsd was installed, all bets are off. Dutchman can make you 30 spline shafts if that is indeed what you need...

I personally wouldn't waste my time with 30 spline shafts in such a heavy vehicle, while that might be considered reasonably strong in a Jeep, it clearly won't cut it in a fullsize van that sees offroad use. E350 D60FF spindles will accept 35 spline shafts, but you'll still be stuck buying a new carrier to match. If you don't want to deal with it again, that would be the MINIMUM I would consider.
TheLetterJ is offline   Reply With Quote
Old 12-06-2017, 08:33 PM   #14
Senior Member
 
MadScience's Avatar
 
Join Date: Jul 2011
Location: SF Peninsula
Posts: 809
Quote:
Originally Posted by SierraHawk View Post
Apparently Yukon had a bad batch of axle shafts that caused them to come close to bankruptcy.
That's the kind of situation that's just bad for everyone involved.

Quote:
The axle shafts come with a warranty but only for vehicles that have tires that are up to 32".
Not terribly surprising, and it's not like a single axle shaft is that big a deal, but more so when you get into the larger situation that you're in now. No fun at all. At least the area you're in is pretty.

I'll +1 on counting the splines yourself. I've really only worked with one mechanic that really understands that these vans have been pieced together from unrelated parts. All the others keep making assumptions about one thing based on another.

As others are suggesting, it's worth considering swapping gears just to get parts to work sooner. I actually had to look this up, since I was confused on why folks were suggesting higher spline count axles for more strength. Higher spline count seems to be directly related to axle diameter. More splines == thicker axle.

Good luck! Also, once you figure out the right axle, consider picking up a spare.
__________________

'99 EB ex ENG KSWB news van, low rent 4x4 conversion (mostly fixed by now), home built interior.
MadScience is offline   Reply With Quote
Old 12-07-2017, 08:22 AM   #15
Senior Member
 
ShuttlePilot's Avatar
 
Join Date: Aug 2012
Posts: 632
SierraHawk thanks for keeping us posted on your axle adventure and I hope for quick resolution for you.

Question for the Axle Gurus.

Am I wrong to conclude that if I was to swap in a full float axle that no mater which donor 1 ton axle I used I would want to configure it for 35 spline shafts? First for availability of parts and secondly for strength?

-Eric
__________________
2005 SMB RB 4x4 6.0 PSD
A rocket on the pad is safe,
but it's not what rockets are built for.
ShuttlePilot is offline   Reply With Quote
Old 12-07-2017, 10:56 AM   #16
Senior Member
 
Join Date: Jul 2011
Location: Flagstaff, AZ
Posts: 1,995
Quote:
Originally Posted by ShuttlePilot View Post
SierraHawk thanks for keeping us posted on your axle adventure and I hope for quick resolution for you.

Question for the Axle Gurus.

Am I wrong to conclude that if I was to swap in a full float axle that no mater which donor 1 ton axle I used I would want to configure it for 35 spline shafts? First for availability of parts and secondly for strength?

-Eric
I'm no axle guru but there are more locker options for 35 spline in a D60. Also of note is SMB spec'd the dyntrac prorock60 front axle with 32 spline.

Anyone who has a D60SF on their rig with an ARB locker for example will need to upgrade to 35 spline axles if they do a swap to a full floater. Not sure but the SF has 35 spline and the FF in general was 32 spline.
__________________
2005 E350 RB 6.0 PSD for extended fun
1989 Landcruiser FJ62 for local fun
2011 VW TDI Golf for hwy fun
JoeH is offline   Reply With Quote
Old 12-12-2017, 09:37 AM   #17
Senior Member
 
Join Date: Jul 2011
Location: Flagstaff, AZ
Posts: 1,995
Posting again to correct mis-information in my above post. SMB spec'd the front Dynatrac Prorock with a 30 spline outer. Not sure why. Apparently, SMB is the only vendor that sources a 60 from Dynatrac with less than 35 spline.
__________________
2005 E350 RB 6.0 PSD for extended fun
1989 Landcruiser FJ62 for local fun
2011 VW TDI Golf for hwy fun
JoeH is offline   Reply With Quote
Old 12-15-2017, 07:30 PM   #18
Senior Member
 
SierraHawk's Avatar
 
Join Date: Jun 2009
Posts: 323
This is just act 1. Got the axle w/30 splines and it slid into place. Nuts back on and tightened but the shop journey man said that inside the carrier is probably a Detroit Locker and not the Eaton Truetrac. Drove away from the shop it did just fine. Problem solved kinda.

Act 2: Telling the shop foreman who did the FF rebuild. Either he ordered the wrong diff or Eaton sent the wrong diff. I need to know how to approach the shop personnel at Wally and Sons and present this problem.
SierraHawk is offline   Reply With Quote
Old 12-15-2017, 08:07 PM   #19
Senior Member
 
Join Date: Jul 2011
Location: Flagstaff, AZ
Posts: 1,995
With regard to Act 2 I would look up the BOM# and see what was in that axle in the first place. It still seems odd to me that you ended up with 30 spline axles. If it had 32 spine like most full floater then why did they stick 30 spline in there when the expense of upgrading to 35 spline is minimal? Sorry that just seems negligent to me.
__________________
2005 E350 RB 6.0 PSD for extended fun
1989 Landcruiser FJ62 for local fun
2011 VW TDI Golf for hwy fun
JoeH is offline   Reply With Quote
Old 12-15-2017, 08:40 PM   #20
Senior Member
 
MadScience's Avatar
 
Join Date: Jul 2011
Location: SF Peninsula
Posts: 809
I suspect that the shop that swapped the axles just didn't expect a Truetrac to look as much like a Detroit locker as it does. That said...

I feel like you'd know if you were driving around with a Detroit locker in the back on dry pavement. If you are, there would be noise when you come out of turn and go back to driving straight.

If you are, it might not be super great for the longevity of the axles either, though I don't know how much worse a Detroit locker is from a Truetrac. They are probably more similar than different, thought Detroit will have more of a tendency to stay locked.

Edit: Eaton even refers to the Truetrac as a Detroit Truetrac
__________________

'99 EB ex ENG KSWB news van, low rent 4x4 conversion (mostly fixed by now), home built interior.
MadScience is offline   Reply With Quote
Reply

Tags
axle, break, eaton, rear, shaft

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 02:46 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.