Dumb question about transfer case and driveshafts

[scjarena]

I have a M211 which is a project and I've never driven it yet. It has one of the rear driveshafts off going to the rear end. I started the truck up but it won't move. I assume the other drive is needed coming from the transfer case. Is this correct? Thanks

 

[hippiedude]

Sounds like you may have a transmission issue ...... Should drive missing one rear drive shaft .............. Is the drive shaft between the transmission and the transfer case inplace ??? Tim

 

[hippiedude]

Down load the TM`s from JATONKA`s site ..........

 

[Gunner0311]

Front Shaft?

Is the front driveshaft in place?

Even with no power to the rear shafts, the sprag should engage and send power to the front wheels and you could drive away.

But as was asked above, you need the shaft between the transmission and the
transfer case in working order....

Good luck and have fun. These are great trucks, once you get the repairs made....

 

[hendersond]

Is that little flat lever under the seat by your right heel up or down?

 

[scjarena]

Heres the story: previous owner removed or torched driveshaft so the truck could be moved. The short drive shaft is in place between transmission and transfer case. The front drive is removed and the driveshaft to the second rear axle is removed. The flat lever on the floor is pulled up for engaged. I start the engine, small lever on shift tower is forward and then I move larger shifter either into low or high nothing happens. Am I missing something? While running and in gear, I notice the driveshaft turning between the trans and TC, so I'm thinking either the other driveshafts need to be hooked up, the TC is broken, or ?? Thanks

 

[poppop]

Sounds like broken transfer uless the shifter is out of adjustment and its not really engaged. With the transmision turning move the transfer shifter up and down and see if you find a place where it grinds. Don't force it just move easily.

 

[OMP1973]

So whats the small lever on the shift tower?


Matt

 

[scjarena]

So whats the small lever on the shift tower?

I think I have the REB shift kit.

 

[nattieleather]

Let me see if I'm following you correctly. You have NO drive shafts between the transfer case and the axles? If that's correct then yea your not going to move. You need at least one drive shaft in order for the truck to roll. If I miss read what you said then please disregard.

 

[scjarena]

No, there is one going to the first rear end.

 

[Gunfreak25]

Which driveshaft is there? E or D?

GMC 6X6 MECHANICALS

Driveshaft E will move the truck as it powers the middle tandem (axle).
Driveshaft D will not move the truck, it just powers the pillow block for the rear tandem.

Also. Are the rear outputs on the Tcase moving at all? If not, i'll bet the linkage for the IN OUT needs to be adjusted. With wear, the length of pull that the shifter shaft needs will increase. Or it will just spin in Neutral.

 

[hippiedude]

I know PDFs are had to deal with ... this guy on e-bay (milman61) has Tm 9-8024 for $30.00 .. Item # 350268102109 ..... Sounds like some ajustment issues ..........as long as you have the short shaft between trans. and tcase and one (1) complete rear drive shaft it should move ................. Buy the TM ....it`s a must have and a good price .............. Good luck ............ Tim

 

[scjarena]

Thanks for the tips. I do have driveshaft E in. I'll be checking the TC linkage since this truck was sitting for a long time so the linkage is sticking and needing oiling and the TC lever had been sitting in the disengaged position for a long time. Thanks

 

[hippiedude]

The T case uses a cable ( I`m pretty sure ) could very well be the issue ........

 

[Gunfreak25]

You may be thinking of the M35's, Tim. The GMC's all have mechanical linkage for the transfer IN/OUT shifter rod.

 

[scjarena]

Well, looks like everything looks good so far. While under the truck I oiled more of the linkage, while messing with the TC, I noticed the TC lever finally moved up and felt like it engaged in gear. I started the truck and put it gear and it jerked forward a little, but I need to work the brakes and a lot of other stuff before I attempt to drive it.

 

[scjarena]

Oh, by the way, if anyone has any driveshafts for sale, I'm looking for driveshafts, D and E, the two coming off the back of the TC. Somebody torched the splined end so they could roll the truck. If I can find the correct splined end, I could reweld in, a new splined end.