Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: PhatDave on May 20, 2016, 12:49:24 PM

Title: WJ rear diff implosion
Post by: PhatDave on May 20, 2016, 12:49:24 PM
Finally got round to assessing the damage done at Harptree the other weekend, and I haven't snapped a halfshaft (hurrah) I have imploded all the planetary gears in the rear diff (boo).

All four appear to be missing teeth, so I guess I will need to replace them - is that viable? Where do I get them from and what else will need doing with them?

In other news the brand new ball joint on top of the axle has separated from its flange, which I am fairly confident shouldn't happen!! [emoji35] that explains the knocking then, I guess - annoying that I just got new lca bushes but I guess they need doing too anyway.

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Title: Re: WJ rear diff implosion
Post by: scrw on May 20, 2016, 02:33:54 PM
May have a spare used diff tucked away. Also have a pair of recently built 4.10 wg axles for sale  :icon_winkle:
Title: Re: WJ rear diff implosion
Post by: scrw on May 20, 2016, 02:37:37 PM
Out of interest what have you done to help the angles on the ball joint with your lift, a arm spacer?
Title: Re: WJ rear diff implosion
Post by: PhatDave on May 20, 2016, 04:09:20 PM
May have a spare used diff tucked away. Also have a pair of recently built 4.10 wg axles for sale  :icon_winkle:
I had noticed... [emoji6] but I don't have the readies to act upon it!

I have an A-arm spacer, came with the lift kit. I sent a message to Jeep Chrysler Parts (who I got it from) and they are sending a replacement, something about a possible faulty batch (I hope)

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Title: Re: WJ rear diff implosion
Post by: PhatDave on May 22, 2016, 09:11:43 AM
I am striking out with breakers on eBay - any breaking an overland say they don't have any planetary gears to sell... Anyone got any lying around, or know where I can get some?

Am I calling them by the wrong name?

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Title: Re: WJ rear diff implosion
Post by: Dave69 on May 22, 2016, 09:21:42 AM
Rock auto stateside may help. Delivery within a week
Title: Re: WJ rear diff implosion
Post by: scrw on May 22, 2016, 11:06:04 AM
breakers are only going to sell a full diff surely? Is there any sign of damage to the diff housing or is it just the planet gears? You could just weld them up LOL
Title: Re: WJ rear diff implosion
Post by: PhatDave on May 22, 2016, 07:08:19 PM
No obvious signs of damage to the carrier, although I have had to halt progress for a while and have yet to get the gears out so I might see something then...

I'm not opposed to getting a complete diff just for the gears but none of the breakers have even offered that as an option?

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Title: Re: WJ rear diff implosion
Post by: PhatDave on May 24, 2016, 06:43:26 AM
I have found this diff on eBay eBay number: 252155846934 (can't work out how to put a link on my phone).

Its stated as from a 3.1 diesel Grand but the picture looks like the diff carrier in my rear axle - does that mean they will be the same or is there a chance the internal gears are different?

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Title: Re: WJ rear diff implosion
Post by: scrw on May 24, 2016, 07:08:29 AM
3.73 & 3.91 carriers should be the same, certainly from adding RnP gears they are