Your sun and planetary gears let go:
http://www.----------.com/BrokenCase01.jpg
God Bless America, ßill O|||||||O
mailto:--------------------

fray wrote:
>
> On Tuesday I brought my Jeep (01 Sahara) in for service. Standard
> stuff, change the transfer case fluid, check the breaks, oil change,
> and adjust the 4x4 lever. (Previously if you pulled back to the 4x4
> high location it would be in neutral.. you had to be in the middle of
> the position to be in 4x4 high..)
>
> After picking up the jeep I drove around (all different speeds) for
> 15-20 miles. No out of place noises nothing.
>
> Yesterday after lunch I was driving on the freeway (it had been
> raining, but luckily had stopped). Just turned on the cruise control
> to 65 MPH.. and suddenly "_BANG_", "screeetch".. Something broke at 65
> MPH and the wheels locked up! 65-0 in about 10-15 seconds.. dead in
> the middle of the freeway with on coming traffic going 65-80 MPH!
>
> Luckily I avoided getting rear-ended and was able to get highway patrol
> there within a few minutes. When loading the jeep onto the flatbed we
> put the transmission and transfer case into neutral. The rear tires
> "lurched" and turned.. the front fires wouldn't turn at all. Had the
> jeep towed back to the dealership (15 or so miles away).. ($500+!
> dealership picked up the invoice on that...)
>
> I'm still waiting to hear what went wrong and whats broken..... but I
> was wondering, if anyone has any idea what the hell happened.... and
> what I need to look out for (damage wise).
>
> My suspicion right now is either all 4 tires locked up or only the
> front 2. If all 4 locked, then I suspect the transfer case blew up.
> If only the front 2 locked then the front differential blew up.
>
> If the transfer case blew, then could the front/rear differential,
> drive shaft, etc be damaged? (I already expect the tires to be flat
> spotted).
>
> If only the front differential blew up.. would there be any damage to
> anything other then the front axel?
>
> (Needless to say, it was damned scary going from 65-0 without being
> able to do anything about it.. highway patrol, highway helper, tow
> truck driver and jeep service guy were all amazed I didn't flip/roll
> it.. geez..)
>
> Thanx,
> Mark
>
> (First time I've posted here.. been reading the group for the last 4
> years.. all sorts of great tips!)

 

Your sun and planetary gears let go:
http://www.----------.com/BrokenCase01.jpg
God Bless America, ßill O|||||||O
mailto:--------------------

fray wrote:
>
> On Tuesday I brought my Jeep (01 Sahara) in for service. Standard
> stuff, change the transfer case fluid, check the breaks, oil change,
> and adjust the 4x4 lever. (Previously if you pulled back to the 4x4
> high location it would be in neutral.. you had to be in the middle of
> the position to be in 4x4 high..)
>
> After picking up the jeep I drove around (all different speeds) for
> 15-20 miles. No out of place noises nothing.
>
> Yesterday after lunch I was driving on the freeway (it had been
> raining, but luckily had stopped). Just turned on the cruise control
> to 65 MPH.. and suddenly "_BANG_", "screeetch".. Something broke at 65
> MPH and the wheels locked up! 65-0 in about 10-15 seconds.. dead in
> the middle of the freeway with on coming traffic going 65-80 MPH!
>
> Luckily I avoided getting rear-ended and was able to get highway patrol
> there within a few minutes. When loading the jeep onto the flatbed we
> put the transmission and transfer case into neutral. The rear tires
> "lurched" and turned.. the front fires wouldn't turn at all. Had the
> jeep towed back to the dealership (15 or so miles away).. ($500+!
> dealership picked up the invoice on that...)
>
> I'm still waiting to hear what went wrong and whats broken..... but I
> was wondering, if anyone has any idea what the hell happened.... and
> what I need to look out for (damage wise).
>
> My suspicion right now is either all 4 tires locked up or only the
> front 2. If all 4 locked, then I suspect the transfer case blew up.
> If only the front 2 locked then the front differential blew up.
>
> If the transfer case blew, then could the front/rear differential,
> drive shaft, etc be damaged? (I already expect the tires to be flat
> spotted).
>
> If only the front differential blew up.. would there be any damage to
> anything other then the front axel?
>
> (Needless to say, it was damned scary going from 65-0 without being
> able to do anything about it.. highway patrol, highway helper, tow
> truck driver and jeep service guy were all amazed I didn't flip/roll
> it.. geez..)
>
> Thanx,
> Mark
>
> (First time I've posted here.. been reading the group for the last 4
> years.. all sorts of great tips!)

 

Your sun and planetary gears let go:
http://www.----------.com/BrokenCase01.jpg
God Bless America, ßill O|||||||O
mailto:--------------------

fray wrote:
>
> On Tuesday I brought my Jeep (01 Sahara) in for service. Standard
> stuff, change the transfer case fluid, check the breaks, oil change,
> and adjust the 4x4 lever. (Previously if you pulled back to the 4x4
> high location it would be in neutral.. you had to be in the middle of
> the position to be in 4x4 high..)
>
> After picking up the jeep I drove around (all different speeds) for
> 15-20 miles. No out of place noises nothing.
>
> Yesterday after lunch I was driving on the freeway (it had been
> raining, but luckily had stopped). Just turned on the cruise control
> to 65 MPH.. and suddenly "_BANG_", "screeetch".. Something broke at 65
> MPH and the wheels locked up! 65-0 in about 10-15 seconds.. dead in
> the middle of the freeway with on coming traffic going 65-80 MPH!
>
> Luckily I avoided getting rear-ended and was able to get highway patrol
> there within a few minutes. When loading the jeep onto the flatbed we
> put the transmission and transfer case into neutral. The rear tires
> "lurched" and turned.. the front fires wouldn't turn at all. Had the
> jeep towed back to the dealership (15 or so miles away).. ($500+!
> dealership picked up the invoice on that...)
>
> I'm still waiting to hear what went wrong and whats broken..... but I
> was wondering, if anyone has any idea what the hell happened.... and
> what I need to look out for (damage wise).
>
> My suspicion right now is either all 4 tires locked up or only the
> front 2. If all 4 locked, then I suspect the transfer case blew up.
> If only the front 2 locked then the front differential blew up.
>
> If the transfer case blew, then could the front/rear differential,
> drive shaft, etc be damaged? (I already expect the tires to be flat
> spotted).
>
> If only the front differential blew up.. would there be any damage to
> anything other then the front axel?
>
> (Needless to say, it was damned scary going from 65-0 without being
> able to do anything about it.. highway patrol, highway helper, tow
> truck driver and jeep service guy were all amazed I didn't flip/roll
> it.. geez..)
>
> Thanx,
> Mark
>
> (First time I've posted here.. been reading the group for the last 4
> years.. all sorts of great tips!)

 

Ok, I just got a call from the dealership.

It turns out they had checked the fluid in the front differential and
umm.. didn't exactly make sure there was enough left in there after
they checked it.

The front pinion bearing grenaded.. they said they're going to replace
all of the bearing is the front axel. Is there anything else I need
to look out for?

(They said they checked everything else over, and only the front wheels
locked up on it, the transfer case/rear end looks fine.)

 

Ok, I just got a call from the dealership.

It turns out they had checked the fluid in the front differential and
umm.. didn't exactly make sure there was enough left in there after
they checked it.

The front pinion bearing grenaded.. they said they're going to replace
all of the bearing is the front axel. Is there anything else I need
to look out for?

(They said they checked everything else over, and only the front wheels
locked up on it, the transfer case/rear end looks fine.)

 

Ok, I just got a call from the dealership.

It turns out they had checked the fluid in the front differential and
umm.. didn't exactly make sure there was enough left in there after
they checked it.

The front pinion bearing grenaded.. they said they're going to replace
all of the bearing is the front axel. Is there anything else I need
to look out for?

(They said they checked everything else over, and only the front wheels
locked up on it, the transfer case/rear end looks fine.)

 

The front u-joints, axle bearings and seals and ring and pinion just all
took a major 'hit'.

So did the front output bearing and seal in the t-case.

The twist when the pinion jammed up against the ring gear must have
caused some severe stress if no damage showing....

I would be asking about a warranty period on it if they chose to use any
of the old guts of the front end.

My $0.02,

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

fray wrote:
>
> Ok, I just got a call from the dealership.
>
> It turns out they had checked the fluid in the front differential and
> umm.. didn't exactly make sure there was enough left in there after
> they checked it.
>
> The front pinion bearing grenaded.. they said they're going to replace
> all of the bearing is the front axel. Is there anything else I need
> to look out for?
>
> (They said they checked everything else over, and only the front wheels
> locked up on it, the transfer case/rear end looks fine.)

 

The front u-joints, axle bearings and seals and ring and pinion just all
took a major 'hit'.

So did the front output bearing and seal in the t-case.

The twist when the pinion jammed up against the ring gear must have
caused some severe stress if no damage showing....

I would be asking about a warranty period on it if they chose to use any
of the old guts of the front end.

My $0.02,

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

fray wrote:
>
> Ok, I just got a call from the dealership.
>
> It turns out they had checked the fluid in the front differential and
> umm.. didn't exactly make sure there was enough left in there after
> they checked it.
>
> The front pinion bearing grenaded.. they said they're going to replace
> all of the bearing is the front axel. Is there anything else I need
> to look out for?
>
> (They said they checked everything else over, and only the front wheels
> locked up on it, the transfer case/rear end looks fine.)

 

The front u-joints, axle bearings and seals and ring and pinion just all
took a major 'hit'.

So did the front output bearing and seal in the t-case.

The twist when the pinion jammed up against the ring gear must have
caused some severe stress if no damage showing....

I would be asking about a warranty period on it if they chose to use any
of the old guts of the front end.

My $0.02,

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

fray wrote:
>
> Ok, I just got a call from the dealership.
>
> It turns out they had checked the fluid in the front differential and
> umm.. didn't exactly make sure there was enough left in there after
> they checked it.
>
> The front pinion bearing grenaded.. they said they're going to replace
> all of the bearing is the front axel. Is there anything else I need
> to look out for?
>
> (They said they checked everything else over, and only the front wheels
> locked up on it, the transfer case/rear end looks fine.)

 

> It turns out they had checked the fluid in the front differential and
> umm.. didn't exactly make sure there was enough left in there after
> they checked it.

Are they going to fix this free of charge? by their own admission they
----ed up. Call the shop back right away and talk to the boss, make sure
you get him to put in writing that due to their carelessness you almost died
when you diff blew while on the highway doing 60 mph. If he won't do this,
talk to the owner and repeat all the conversation to him/her. If they still
won't fix for free let them know you will be talking to a lawyer tomorrow
morning after which you will be contacting the news media, your state
vehicle safety board and other legal factions.

Snow..