Front drive shaft spinning

[laxman21]

On what transfer case does the front drive shaft not spin when the truck is moving? 88 and up trucks.

[MT-2500]

Part time transfer cases.

Most transfer cases in 2W the front drive shaft is not locked in.
But if front axel is locked in the drive shaft will be locked to front rear end.

[laxman21]

Originally Posted by MT-2500

Part time transfer cases.

Most transfer cases in 2W the front drive shaft is not locked in.
But if front axel is locked in the drive shaft will be locked to front rear end.

Isn't the drivers side axle always connected to the front diff causing it to spin the shaft?

I thought a shift on the flys, the front always spun. Didn't know you had to stop to shift to 4x4 on some models.

[MT-2500]

If front axel is unlocked the spider gears spin and not drive shaft.
Shift on the fly is Ford,s with automatic hubs,

[laxman21]

Originally Posted by MT-2500

If front axel is unlocked the spider gears spin and not drive shaft.
Shift on the fly is Ford,s with automatic hubs,

On the fly, I just mean while driving 35 mph.

[MT-2500]

Originally Posted by laxman21

On the fly, I just mean while driving 35 mph.

The good book say you can shift from 2W to 4W at higher speeds but stop or under 3 MPH on a 4W HIGH TO 4W LOW SHIFT.
And do not use 4W on dry payment

But common sense tells me it is not a good idea to shift into 4W at higher speeds.

[laxman21]

Originally Posted by MT-2500

The good book say you can shift from 2W to 4W at higher speeds but stop or under 3 MPH on a 4W HIGH TO 4W LOW SHIFT.
And do not use 4W on dry payment

But common sense tells me it is not a good idea to shift into 4W at higher speeds.

So how does it start spinning the front shaft from 0 to 40 without breakage on the part time?


AThe auto spins all the time...is this from the t-case?

[MT-2500]

Originally Posted by laxman21

So how does it start spinning the front shaft from 0 to 40 without breakage on the part time?


AThe auto spins all the time...is this from the t-case?

Not sure what the question is on the auto spins all time.
what transfer case are you refering to there?
There is many different transfer cases.
For details on and factory information on shifting and operation of transfer cases.
A factory repair manual or
http://www.alldata.com/products/diy/index.html

[j cAT]

Originally Posted by laxman21

So how does it start spinning the front shaft from 0 to 40 without breakage on the part time?


AThe auto spins all the time...is this from the t-case?

since you have an older 4X4 I would slow down before engaging the 4WD HI from 2wd...

since I have the auto mode in my 2000..I put this on when driving on snow/ice or very very heavy rain...I assume it is not damaging since I cannot in any way feel the engagement of the 4WD when slipping..

the only time I use the locked 4X4 hi or low is when I am pulling the boat out / up the boat ramp...

[laxman21]

Originally Posted by MT-2500

Not sure what the question is on the auto spins all time.
what transfer case are you refering to there?
There is many different transfer cases.
For details on and factory information on shifting and operation of transfer cases.
A factory repair manual or
http://www.alldata.com/products/diy/index.html

On the auto 4 button....the front drive shaft spins all the time. Is this caused by the tcase or the drivers side front tire?

Just wondering as I was having a discussion about it.

[MT-2500]

Originally Posted by laxman21

On the auto 4 button....the front drive shaft spins all the time. Is this caused by the tcase or the drivers side front tire?

Just wondering as I was having a discussion about it.

IF FRONT AXEL IS LOCKED IN THE DRIVE SHAFT WILL BE LOCKED IN TURN ALL TIME OR IF TRANSFER CASE IS PUTTING POWER TO FRONT AXEL.

In auto mode the power to front drive shaft is only as needed .

You are jumping from old transfer cases to new auto transfer cases.
They are different.