Front Differential Explosion

[spressomon]

The holes in the diff case are disturbing at best. I can't begin to imagine the forces required to puncture, from the inside or outside, the diff case.

Maybe another point in favor to the 2000+ LC with TRAC. I wish I could have afforded a year or two newer LC when I bought mine...but I was pressing to get even a '99. I wonder how TRAC would have been in this situation. Based upon all the things everyone has said about their 2000+ models I gotta believe TRAC would have gotten you out...

Major bummer for you...we will all be interested in learning more about this failure...sorry you have to go through this!

 

[ShottsUZJ100]

I was searching for a 98-99 but now it looks like a 00+

Sorry to see this happen to you under such mild conditions

 

[ShottsUZJ100]

I wonder how TRAC would have been in this situation. Based upon all the things everyone has said about their 2000+ models I gotta believe TRAC would have gotten you out...

I've found my TRAC to be more effective and 10x more control than using my lockers when in snow and ice. Though I have a feeling this front diff was going to explode anyways. Something's up.

 

[Greg B]

I still didn't hear the answer to my question, has anyone swapped a four pinion diff assembly into a 98 or 99? I'm going to start calling salvage yards tomorrow. And yes, while it's out, the ARB is coming.

If you're putting in an ARB, your question is irrelevant. The ARB is a four pinion and replaces the factory diff.

My guess on this scenario is that the diff was already damaged from one of the previous episodes you mentioned. Then while spinning the tires, the diff came apart sending pieces through the housing. There had to have been a lot of force to shoot those parts through the housing like that and the only way I see that you could have generated that much force was to be spinning the tires very fast.

Please don't take offense, I'm not pointing any fingers or anything like that. I'm just trying to figure out how enough force was generated to shoot those pieces through the housing like that.

At this point, I would recommend sourcing a front housing in good shape from a salvage yard and then have whomever is going to install the ARB go through the new housing make sure it is OK.

Good luck, I hope it all works out for you.

 

[brett76]

got linked from the heep thread. man that sucks. i dont get that either. i pull e brakes doing 20 plus and pull out spinning in my 60 with four people and our gear up in the parking lots at crystal. sorry to hear.
then again ive never really had to lock my hubs even in snow yet either. i keep hoping to someday but it always does just fine

 

[Jim_Chow]

Doesn't your 60 have a forward cut front ring gear while on the 80 and later, Toyota went to the reverse cut front ring? The reverse cut is stronger pulling forward, but weak in reverse. Also by locking the center diff on the 100, half the torque is going to the front diff while when unlocked, isn't it like 35-40%?

 

[uzj100]

Does anyone on the board live near this trail and could run it again?

I believe there was a pre-existing condition on this 98 and there was quite a bit of skinny pedaled used in low range.

uzj100

 

[brett76]

Doesn't your 60 have a forward cut front ring gear while on the 80 and later, Toyota went to the reverse cut front ring? The reverse cut is stronger pulling forward, but weak in reverse. Also by locking the center diff on the 100, half the torque is going to the front diff while when unlocked, isn't it like 35-40%?

@&@&@&@& if i know. i can fix anything on this rig that i need to but gear ratios and @&@&@&@& i dont know. if you asked in 60 tech I KNOW someone in there would know. i.e. mace

 

[Landpimp]

yup, just like a 40.

Doesn't your 60 have a forward cut front ring gear while on the 80 and later, Toyota went to the reverse cut front ring? The reverse cut is stronger pulling forward, but weak in reverse. Also by locking the center diff on the 100, half the torque is going to the front diff while when unlocked, isn't it like 35-40%?

 

[Campfire]

I've called around the SF Bay Area and no luck so far. Sacramento "Toyota Specialists" has one at his Arizona lot for $1500. Even called up to Washington State and was told "Those are scarce". And thanks for all your responses.
OK guys, here was the scenerio. Drove in 140' (tow truck driver had 150' of cable) 4H, unlocked. Sank and came to a stop, then reversed and tried to back out only to move about two feet. Hit the center lock, and moved forward again another two feet. Got a run in reverse and only made it back to the new burm.
Shifted to 4L, and switched the rear locker on, and rocked it back and forth only to drop down to the ice. Somewhere in here is where the first "pop" was heard somewhere around 3000 RPM. My two kids were out spotting me (16 & 19) and stated that both fronts were turning. I rocked it again and that's when all hell broke lose inside the carrier. Started digging out with our skis, and made nice little ruts toward the road. Reverse again and made it about five feet, and that's when I got to see the oil in the snow. Forwarded back up to the front to get another run at it in reverse, gave it one more try and then common sense said "Dad, go call mom and tell her we're going to be late". Now I realize that I'm giving you guys a lot of ammo here, and even I think this sounds like an H2 nightmare, but there are lessons to be learned here. For you young guys, I'm happily married for 22+ years and plan on staying that way, so listen. Just bought the most expensive 4X4 I ever owned and in a month broke a major component.
1. She's already asked if tires would have helped.
2. She's stated "Guess this means you're going to start modifying it"
3. "$1500 for a used one? How much for a NEW one?"
4. "Guess I know what I'm getting you for Christmas" YES!!!!!
5. And after reading her some of you posts, "guess you better build it so it won't happen again"
6. Go slow, be methodical in your plans for modification.
Sure it sounds like a moron in a snowmobile story, I just thought this 100 was going to be crawler like my 82 FJ60. Now it will be!
Oh yeah, Toyo Open Country MT's can be here in two weeks or so says the tire guy.
THANKS GUYS!

 

[tabraha]

I sure as hell hope $1500 is for install too?!? There's no way I'd part with that much money and STILL not have an ARB up front. (no offense Mr. T )


You haven't done anything that many of us on here haven't already done. I literally smoked my tires rocking my 100 back and forth when I sunk it in our pond that was under construction (reference: https://forum.ih8mud.com/showpost.php?p=585057&postcount=36 ). After many hours of washing the underbelly the vehicle is otherwise fine.

I still think you were a victim of circumstance and that this failure was some time coming. (Not necessarily a result of that trail in particular) Lord if that was the case I'd be scared to even take a 100 to the mall!

 

[r3run33]

sorry to hear of the mess but from an old lx 99 owner i think it was a known issue with them as for the trac in the new ones it is much better we had about a ft of snow here last week and my 06 was great no side ways stuff at all like i would get with the 99 now i was on the street the whole time so i have no had any real off roading in snow yet i did some mild sand stuff . hey for the other comment my 06 is brand new and my sun roof rattles on the highway, one of the mirrors does not go back after tilting down when in rev and my oil press gauge does not work any more so i get lots of ribbing from my wife for this exp 4x4

 

[spressomon]

hey for the other comment my 06 is brand new and my sun roof rattles on the highway, one of the mirrors does not go back after tilting down when in rev and my oil press gauge does not work any more so i get lots of ribbing from my wife for this exp 4x4

That's depressing to hear!

 

[Pskhaat]

$1500 is way overpriced. Someone's making some margin there!

Let us know if you still can't source one. Check cruiserparts.net, and bunch of used parts online shops. Wife's got a point but I can't imagine a new one from a 2000+ wouldn't be comparable in price from Cruiser Dan or the likes.

 

[clownmidget]

Be sure and include the LX470 in your search as well. I just checked car-part.com using "front carrier" and got plenty of hits for 2000+ LC's and LX470's. Good luck though, it'll still be $$$ to get it done right.

 

[uzj100]

I do not think I would even look for a yota diff. You have your chance to get an arb. What a great xmas present to your cruiser.

uzj100

 

[bamachem]

he still has to get the OEM housing to put the ARB locking diff in though.

$1500 is nucking futs.

 

[richg]

OK guys, here was the scenerio. Drove in 140' (tow truck driver had 150' of cable) 4H, unlocked. Sank and came to a stop, then reversed and tried to back out only to move about two feet. Hit the center lock, and moved forward again another two feet. Got a run in reverse and only made it back to the new burm.
Shifted to 4L, and switched the rear locker on, and rocked it back and forth only to drop down to the ice. Somewhere in here is where the first "pop" was heard somewhere around 3000 RPM.

Was there any wheel hop at all present when you were on the gas? ie, the front wheels bouncing up and down as they gained / lost traction. Or were they strictly just spinning?

rich

 

[tabraha]

he still has to get the OEM housing to put the ARB locking diff in though.

$1500 is nucking futs.

Ouch, I forgot about the housing getting screwed up. I don't think anyone has ever had that happen when a diff blew (sorry for the honor campfire). Maybe that was included in the $1500. I'd hope so.

 

[uzj100]

Reverse is where most of these diffs give up. Well documented down under.

There has to be a wrecking yard with a housing.

Not to be stupid, but could you weld all the holes shut and then grind it smooth on the inside and reuse? and if that works, send me $500 for my idea!!!!

uzj100