T case

[ari]

My rig has a T/C light does this mean it has a 218 or 242 case or either?

 

[BLK HMMWV]

is it by the shifter?
I'd say it has a 4l80e trans and a 242 transfer case

 

[Action]

Is there a TRANS light next to it?

 

[ari]

No trans light its a 3spd trans 6.5 engine at some point it was a 10xx truck as noted in a previous post. What i am wondering is if i have the vampire prone T case or a upgraded model.

 

[ari]

the light is right in front of the shifter.

 

[Action]

you likely do not have an updated 242 if you still have the 3-speed trans. you should have a 218 T/C.

 

[ari]

So i forgot theres a tag on it I do have a 242 T/C. As action said it shoud be a 218 with the 3 spd basically im trying to figure out what im dealing with. my data plates say its a m998 but its not really an m998 it was a m10xx. and there are various up grades like power steering cooler and high back seats and a fairly new looking 6.5 and a smart start system.

 

[ThunderSquirrel]

Mine is a 6.2 with a 3 speed, and it has a 242 in it.

 

[Action]

the updated 242 has a blue band on one of the cooling port tubes on the front side.

 

[ari]

Action do you have a nsn or part number for the updated 242?

 

[Action]

no

 

[Retiredwarhorses]

There are 2 types of 242 for the HMMWV...the 242 was an MWO to replace the 218. I've seen them installed with and without the lock lamp from whom ever installed them. Take a pic of the tailshadt where the drive shaft exits.
the newer style has a 4 bolt tail shaft housing, the early model has a 3 bolt tail shaft housing.

 

[ari]

 

[Retiredwarhorses]

New style....

 

[ari]

So with it being a new style case and the drive shafts seem to be new style too shouldent a 4l80e trans slide right in and bolt up to everything? except for the wiring harness which would need to be made.

 

[86humv]

Your 242 is dated 06, so its probably the good one.
There are two different 242's that can go behind the 3L80 trans....one has a 3 bolt tail shaft, one has 4 bolts.
3 bolt one has a smaller slip yoke.
I've had 3 and 4 bolt T/c's with the blue band on one tube.
The 4 bolt tail shaft T/C is also the one that fits behind the 4L80e trans.
Each one of these T/C's has a different rear drive shaft.

 

[ari]

mine has 4 bolts so it should work if we are talking about the same bolts.

 

[86humv]

It will work on a 4L80E with the proper adapter.
Adapter on the 3L80 won't work on a 4L80E.

 

[ari]

well thats great news one less thing i would need to buy.