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colsG55
Veteran
Date registered: Aug 2013
Location: Dubai
Vehicle(s): G55 Classic 2000, TD5 110, 200 Series Land Cruiser
Posts: 209
| Re: 1999 G500 Rear Diff Issue
GwagenLover - 12/21/2013 6:00 PM
colsG55 - 12/12/2013 12:35 AM
Thats good to know especially if you bust a front CV joint and need to remove it and drive home with the front locker engaged.
I'm not too sure you can remove the front drive line.
I think it drives the oil pump in the transmission. or so I have been told.
The CV is no problem, you just need to be carrying a hub socket for the strip down & rebuild. IIFC we just removed the outer part of the CV with the balls etc, Mike know the details better as he had to rebuild it all again a week or so later.
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colsG55
Veteran
Date registered: Aug 2013
Location: Dubai
Vehicle(s): G55 Classic 2000, TD5 110, 200 Series Land Cruiser
Posts: 209
| Re: 1999 G500 Rear Diff Issue
AlanMcR - 12/21/2013 6:24 PM
GwagenLover - 12/22/2013 7:00 AM colsG55 - 12/12/2013 12:35 AM Thats good to know especially if you bust a front CV joint and need to remove it and drive home with the front locker engaged. I'm not too sure you can remove the front drive line. I think it drives the oil pump in the transmission. or so I have been told. It works just one as long as you keep the center locker on, which you would have to have on anyway in order to move (on a W463 ).
With CDL locked on the road I am guessing you could still suffer transmission wind up even with only one front CV fitted, so by rights if you tap into the main engine vacuum source you could just actuate the front locker.
I was in a similar situation earlier on this year with my LR Defender, I busted a CV in the desert which I did not realise, I heard a small pop but had no idea I had busted the CV joint until I came out of the desert and de-selected the CDL and had no drive, I quickly worked out the problem and due to the heat and the fact I had my 3 year old son in the car I was in no situation spending a couple of hours ripping the CV out for the drive home. I ended up engaging the front ARB locker and was able to drive home slowly, luckily I was only about 30km from home. Luckily the hub suffered no real damage just a few marks where some of the broken bits caught the CV and the inside of the hub. My Defender has a rear Detroit locker, CDL and an ARB front so you can drive with any combination of locker engaged that you want unlike the set up with the G's.
Edited by colsG55 12/22/2013 12:17 PM
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| RE: 1999 G500 Rear Diff Issue
Some pictures that Col referred to regarding the snapped front CV. We were about 40 miles from the nearest road in the far western desert of the UAE (the Al Maghrib). My rear diff was not engaging. I ended up in a dune V-cleft with my front right wheel lowest (diff was engaged) and when I tried to reverse out the CV snapped. Photos show the outcome.
As for why the rear diff was not engaging, I had previously changed the diff lock collar in the axle tube to resolve it but when I stripped it down a second time the diff bearings were toast and the shims were also messed up; I don't know why.
 (Copy of Makeshift Desert Workshop.jpg)
 (Copy of Author and broken CV.jpg)
Attachments
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 Copy of Makeshift Desert Workshop.jpg (305KB - 0 downloads)
Copy of Author and broken CV.jpg (186KB - 0 downloads)
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chris505
Date registered: May 2007
Location: San Francisco
Vehicle(s): '79 280E/'80 280GE/'00 G500
| RE: 1999 G500 Rear Diff Issue
Min,
Was the diff lock collar first replaced because its teeth were deformed?
If so, the differential carrier must also have had deformed teeth, most likely due to improper locker use (engaging while tires are spinning), so it makes perfect sense to me that just replacing the collar would not fix the problem. If those deformed teeth can't fully interlock when locker is used, high tensile strength metal chunks will soon be floating around inside the axle. Definitely not good for diff bearings or the ring and pinion gears.
I wonder how long your G500 had to rely on the front axle alone for traction before one of the CV joints failed.
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: 1999 G500 Rear Diff Issue
Chris, you contributed to the original diagnosis here:
http://www.pointedthree.com/disc/forums/showthread.php?tid=15892&st...
There are photos of the original diff and slider teeth. Opinion seemed to be that they weren't too bad. The diff did re-engage with the new lock collar but this masked a problem that reared its head not associated with the teeth. My guess was that there was something to do with the associated axle splines that prevented the lock collar moving to engage.
As a result I now have a rear axle in my yard that's a refurbishing project!
Edited by MiN 12/24/2013 1:23 AM
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