Topic: Broken half shaft Dana 30 (Read 5104 times)

IrishCJ6 · « **on:** April 15, 2012, 07:39:54 PM »

Another good day wheeling today but unfortunatley on the last challenge I broke a front half shaft, think its the long one, anyways how hard to replace, what do I replace it with etc etc, all comments wanted

dieselj20 · « **Reply #1 on:** April 15, 2012, 08:31:49 PM »

narrowed fsj 44

willo · « **Reply #2 on:** April 15, 2012, 08:37:49 PM »

or a diesel xj

Bulldog67 · « **Reply #3 on:** April 15, 2012, 08:52:36 PM »

Quote from: dieselj20 on April 15, 2012, 08:31:49 PM

narrowed fsj 44

so I get the lj70's and sell you my n/t's

good thinkin DJ20

IrishCJ6 · « **Reply #4 on:** April 15, 2012, 09:25:22 PM »

Yeah, yeah I know the 30's are the weak link but I really don't have the funds to upgrade axles yet unless someone is willing to part with one for beer tokens and the love of jeeps, I'm more interested in parts to buy, i.e. what shafts etc

dieselj20 · « **Reply #5 on:** April 15, 2012, 09:38:15 PM »

http://www.yukongear.com/ProductDetails.aspx?ProdID=711

jeepcj · « **Reply #6 on:** April 16, 2012, 01:11:22 PM »

make sure you replace it with genuine spicer shaft, sourced second hand or go with the yukon shafts. Don't waste money on Omix-Ada/crown replacement shafts

IrishCJ6 · « **Reply #7 on:** April 16, 2012, 05:44:36 PM »

Unfortnatley I wish it was the axles, but no, this is what I found when I opened up the diff cover

So it was a complete front end dissasemble

it came apart easy and look what was left

a close up of both

Had to make a tool to take off the yoke, worked really well

So at the end of the day I ended up at this stage

Now the questions start,

Anyone got a good second hand 4.27 crown and pinion?

I was given a near new LSD unit with 3.73's from one of the guys in the club, its from a later Dana 30 (seems to fit), would it be worth installing once I get a new/second hand C & P?

Now for a diagnostic on the root of the breakage

when I was taking out the diff assembly I went to undo the 4 bolts hold the bearing caps in place, expecting these to be very tight I grabbed a breaker bar but to my amasement the bolts were little more than hand tight

surely this is not normal? So I think because this was the first time the Jeep was used in anger the diff casing was able to move away from the pinion and thus created a masive backlash that then did the distruction?

What you guys think?

Bubba · « **Reply #8 on:** April 16, 2012, 06:52:39 PM »

i scrapped a few about 6 weeks ago

dieselj20 · « **Reply #9 on:** April 16, 2012, 07:34:23 PM »

what ratio what size tyres if 4.27 small pinion head was a wheel spinning then gripped a locker helps Dana 30 with a v8 is borderline

IrishCJ6 · « **Reply #10 on:** April 16, 2012, 07:40:49 PM »

It's running 33"'s open diff, yeah more than likely spinning but surprised it did the diff not and axle or UJ? Question is what do I do, money is tight, do I look for another second hand 4.27?

? or bite the bullet and buy new? all the rest of the gear looks good?

If I swap axles then I'll have to do both front and rear and/or change ratios in the rear

Dutch · « **Reply #11 on:** April 16, 2012, 07:48:07 PM »

Ouch, it hurts looking at it. Hope you get it fixed soon M8.

Sorry I can't help op the techy front.

Cockney Boy · « **Reply #12 on:** April 16, 2012, 08:27:40 PM »

Three words "Fuck my stump"!!!!! That looks really bad mate

dieselj20 · « **Reply #13 on:** April 16, 2012, 08:38:11 PM »

seen it before usually uj goes breaks the ears of the shafts locker stops the snatch both wheel turn at the same speed

IrishCJ6 · « **Reply #14 on:** April 16, 2012, 09:26:00 PM »

Yep, I've heard of it before aswell, but with a locker, and or as above. But with open diffs and everything standard it just doesn't make sense to me

dieselj20 · « **Reply #15 on:** April 16, 2012, 09:49:20 PM »

not seen a ring and pinion do this with a locker seen the carrier break in half through the pin with a lock right

Dave The Sparky · « **Reply #16 on:** April 16, 2012, 09:54:56 PM »

Its what happens when you have a 360, some large tyres and a heavy right foot J33pky can tell you all about it

Lighthouse have some R+Ps but they were £250+VAT a set or you can buy from the States a bit cheaper.

IrishCJ6 · « **Reply #17 on:** April 16, 2012, 09:59:27 PM »

I know you can get them from the US but what about quality? any brand/name to go for or steer clear of

Bulldog67 · « **Reply #18 on:** April 16, 2012, 10:11:52 PM »

asked similar questions recently:

http://www.birtydastards.com/frm/index.php?topic=18996.0

jeepcj · « **Reply #19 on:** April 17, 2012, 08:24:34 AM »

I went through 3 dana 30 front diffs like you have, the solution was a front dana 44, mine went just like yours, also with open diffs, 32'' swampers and a 360. If you stick with the front d30 and cant get good second hand parts, get your new parts from yukon gear in the states.

IrishCJ6 · « **Reply #20 on:** April 17, 2012, 12:47:25 PM »

I was just looking on 4WD.Com and there is two sets listed one from Omix Ada and the other from Dana

The Omix one is $570 and the Dana is $365, any reason why there is so much of a difference?

http://www.4wd.com/Jeep-Drivetrain-Jeep-Axles-Differentials/4-27-Ring-and-Pinion.aspx?t_c=12&t_s=237&t_pt=5092&t_pn=OAI16513.14

http://www.4wd.com/Jeep-Drivetrain-Jeep-Axles-Differentials/Dana-30-4-27-Ring-And-Pinion-Kit.aspx?t_c=12&t_s=237&t_pt=5092&t_pn=D%2fS706503-8X

IrishCJ6 · « **Reply #21 on:** April 19, 2012, 09:12:48 PM »

With the help of another great Birty's member (dieselj20) I have now sourced a replacement ring and pinion

new bearing kit purchased from the US

new wheel bearing kit from the US

and while I was at it got some Warn Hubs

Its going to be like Christmas all over again in a few weeks however, the bank manager won't think the same way

IrishCJ6 · « **Reply #22 on:** April 24, 2012, 05:22:50 PM »

So the LSD I was given turns out to be a Gleason-Torsen Dana 30 unit (3.73 and up), not bad for a freebe, pulled it apart today to check it over and found it to be spanking clean, so simple as well couldn't believe it. Should work well in the front end on mine.

willo · « **Reply #23 on:** April 24, 2012, 07:19:43 PM »

$50 on says you see more R and P damage imminently

isle of man · « **Reply #24 on:** April 24, 2012, 07:22:35 PM »

Group hug!!!

Author Topic: Broken half shaft Dana 30 (Read 5104 times)

dieselj20

dieselj20

dieselj20

Cockney Boy

dieselj20

dieselj20