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Re:Re:Re:Problems with BigJimny!

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07 Nov 2019 08:37 #215447 by Reason2doubt
Any chance you could put together a few pictures or even a short video looking through your ARB locker? It would be cool to see it...

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07 Nov 2019 10:27 #215448 by X8GGY

mlines wrote: Whoo-hoo

Thanks to Dave (S200 KYS) a temporary replacement diff is on its way from Wales. This will let me keep BigJImny on the road whilst learning how to dismantle and repair the one with the ARB in.

Martin


Happy to help! B)

Dave ;)

Is that buggy finished yet?...

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07 Nov 2019 20:05 - 07 Nov 2019 20:24 #215457 by mlines
So started the strip down tonight. Didn't get to the point where I could drop the diff as the shafts need hammering out and my shift working daughter is asleep.

However in this video you can hear the knocking noise and can see the prop is not moving, so the noise is within the diff.

I had expected to have large flakes of metal on the drain plug but instead there was a large amount of very fine metal filings like a metal paste.



Oh, and at the end of the video you can see some oily film around the oil seal. The seal and bearing was replaced in the spring .

Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses
Last edit: 07 Nov 2019 20:24 by mlines.

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07 Nov 2019 23:34 #215463 by kirkynut
Ah, yes!

I remember seeing Dave was selling diffs and considered them for Lockers in the future but I've not had the cash recently.

Kirkynut

The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.

My Jimny Thread Here: www.bigjimny.com/index.php/forum/8-my-ji...on-continues?start=0

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08 Nov 2019 07:34 #215465 by X8GGY
Let’s hope it’s “just” spat some teeth off the crown wheel / pinion and the ARB is okay and can ‘just’ be fitted with ‘new’ gearing around it...

:)

Is that buggy finished yet?...

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08 Nov 2019 19:52 - 08 Nov 2019 20:14 #215474 by mlines

Reason2doubt wrote: Any chance you could put together a few pictures or even a short video looking through your ARB locker? It would be cool to see it...


Hmmm, not that cool at all!

Here is the damage that I can see.









And here is the real worry, this is a close up of the case of the ARB locker



And here is why, in the bottom of the diff pan are 4.5 bolts! Four are undamaged and the 0.5 is chewed! There is also a large amount of debris





So it is either something in the Diff that has lost its bolts (unlikely as the diff "works") or the bolts were left in there at some point. The axle case was apart for a rebuild in 2013 and I also pulled some parts around at the end of 2018. So whatever way they have been in there a while and it explains the generally noisy diff!.

So the question is whether to rebuild it, or move the ARB to the new Diff from Dave. As the ARB seems to have been damaged it has to come apart. So the initial plan is to put Dave's Diff in so that we have a car for the winter and rebuild the ARB gradually over the Winter.

Thanks for the prompt delivery Dave, that's this weekends work sorted

Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses
Last edit: 08 Nov 2019 20:14 by mlines.

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08 Nov 2019 20:25 #215480 by RainerK
To me the ARB damage looks like something, probably a bolt, chewed into it, repeatedly.

So the ARB might be OK, however with all the bits inside the diff it will have to be cleaned like everything in the rear axle.

I think it amazing that the car worked at all.

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08 Nov 2019 20:32 #215481 by CC Baxter
Nothing a handful of sawdust and thicker oil can't fix!
I wouldn't get too attached to that locker as you confess you don't use it.
Enjoy the new dif and create an interesting garden ornament from the old one.
Chris

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08 Nov 2019 20:37 #215485 by mlines
We do use the locker, just didn't use it at the meet

Sent from my Pixel 2 XL using Tapatalk

Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses

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08 Nov 2019 20:42 #215486 by Lambert
Oh dear that doesn't look particularly normal. Is the damage to the locker really substantial or just the odd surface gouge?

Dreadnaught (black 2011)

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08 Nov 2019 21:17 #215487 by mlines
Well done to the people who have pointed out that the bolts are crown wheel bolts. I didn't look at the back.

It's shed most of the bolts. There are two tight ones left and a couple of loose ones and the rest have gone!

At least it's not my fault!

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Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses

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08 Nov 2019 22:47 #215489 by Max Headroom
Its an old method, but for critical internal bolts to be very secure, you can't beat good old fashioned wire-locking. (Bolt heads would need to be drilled)
USEFUL LINK HERE




IF IT AINT BROKE, KEEP FIXING IT UNTIL IT IS
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