Hello . . I am looking for some information on a F-250 transfer case exploding - I heard it is being called the gernade effect - If you have heard of this Please let me know. Thanks

 

Haven't heard that one!!!!!

I guess it goes along with if you don't change the fluid in it ,it will let you down .But you shouldn't be suprised!!!!!

Rich

 

Never heard of this. The ESOF unit is NVG273 (NVG= New Venture Gear) and the manual unit is NVG271. The two units are substantively identical in their maximum torque capacity (7890 lb-ft each) and GVW (17,500# each) [based on manual transmission and diesel engine]. NVG 271's and 273's are also used by Dodge in their HD 2500/3500 line.

 

lb-feet or inches???

 

feet.
If you're interested, you can find the specs on all their T-cases here:

http://www.newventuregear.com/tcases.html

 

The reason I asked this question is because this happened to me and I am really lucky to be alive. Last tuesday night my boyfriend and I were just getting up to 70mph on interstate I-49 when the truck started shaking - almost like we had a flat tire - He took his foot off of the gas and the next thing we knew the front tires locked up and the air bags deployed. The back end of the truck flew up and flipped over the hood. We landed upside down on the cab. The people who were in the truck behind us saw the whole thing and said we were atleast 15 feet in the air. We walked away with just a few bruises and some soreness the next day. It was the most frightening thing I have ever been through. We believe that the transfer case exploded. Half of the case was blown to tiny little pieces. We won't know anything untill the investagation is over. I have before and after pictures of the truck and pictures of the transfer case but the file is to large to upload - If anyone knows how I can get them in my gallery please let me know - I would like everyone's opinion on the picture of the transfer case. We loved our F-250 and we will be getting another one as soon as possible.

Thanks,
Mandy

 

I would definitely like to see the pictures and know the outcome of the investigation.

Thank God you both were able to walk away.

Flipped end over end!! Wow-w-w!:-staun

 

It was really crazy! I will try and get those pics as soon as I can figure out how . . .
I can email them to anyone who wants to see them before I can get them in my gallery . . . just let me know.
Mandy


99 F-250, black crew cab, V-10, 39.5 superswampers, 4inch lift with 2 inch leveling kit, supercharger with chip. It was our baby!

 

Now that is very interesting!
Glad your okay ,and walked away.

The only thoughts or opinion I have about it is the folllowing . I should not be used in any legal case in anyway ,because I have no way of proving it .

I take it this truck had ESOF (electronic shift on the fly)

The shift motor can malfunction and slam the transfercase into 4 lo, seen it happen on an explorer. granted these tranfercases are a little different in size but ,procedure is the same for going into 4 lo.

If it was a manual transfercase the internal chain could have jump off some how and locked it up ,not likely though.

Just my thoughts.

Rich

Again Mandy glad you and yours is okay!

 

thanks for your input. It will be very interesting to see what the investigator will find.

Mandy

 

Thankfully nobody was hurt, that is the important thing.

I can see where they come up with those torque ratings, they are not continuous -hehe

To put pics in your gallery they will have to be reduced in size. Make sure the gallery is marked "HIDDEN". You can find gallery instructions in the User Gallery forum.

 

This sounds like a driveline polevault to me. I've locked my front 38's up on dry pavement and there's no way it would flip the truck over. I think something hit the ground like the front of the rear driveline.

 

I agree, there is no way that just the locking of the front tires would cause the truck to flip. Maybee the rear driveshaft broke off and launced the rear of the truck up.

 

Pictures would show ! and any markings in the concrete highway.

But with a driveline polevault ,why would the transfercase disentigrate ?????

Usually the driveshaft front u-joint breaks and the driveshaft drops down and you get the polevault ???????

Maybe but ???? Oh if the front driveshaft were to drop it would destroy the case ,I guess.

Scary thought

Rich

Rich

 

Wouldn't your hubs need to be locked up too for the front wheels to lock--even if the T-case somehow ate itself? Even then, seems like you'd shear the u-joint on the front driveshaft before you'd endo.

?Maybe? you had the front driveline puke a yoke or a ujoint then submarine on you, which could conceiveably a) make the truck feel like it locked up; b) get the truck airborne and c) disintegrate itself into the T-case in the process. I just made that up but, it sure seems like a lot of things would have to go wrong at once for you to have the accident you describe