T-case clunk

[jode]

My BW QT Problem (has been clunking under torque off the line and while 4 wheelin) may finally be solved!
I thought it was the chain...replaced it...nope
thought it may be the tranny, but the tranny people (like the fifth "people" I have taken it to) say it may be the splined shaft in the reduction unit!
I am gonna pull a reduction unit off a junker on saturday to find out. Wish me luck. Has anyone ever had a prob with the reduction unit shaft? Am I way out in left feild and wasting my time by taking this guys advice? ANyone....?

[Joe H.]

The input shaft from the tranny to the QT is a ten-spline unit. Over time, those splines wear and give a little more clearance. There's nothing you can do about it short of replacing the shaft. I had the same issue on my dearly departed '78, and I just lived with it.

Just to be safe, check your QT mounts and u-joints, especially that big CV b*st*rd at the rear of the front driveshaft. It's a bear to lube, but it's the thirstiest of all of 'em.

[jode]

There has been "living with" this prob for long enough. Up till yestiddy I could avoid the clunk (which makes my spine chill to hear) by taking it super-easy on the throttle off the line. Yestiddy it started the clunk when I punched it at 30 mph or so. It is getting bad :( soon gonna leave me stranded.

I have access to a differnt case. The ? is do I try the reduction unit swap? Or is it a mightaswell swap the whole thing (T-case) issue? If I pull the whole T-case, then I will see the tranny splines to make sure they are OK right?
AnyQT masters think that a worn red. unit splineshaft would cause clunking even when the red.unit is NOT engaged?

PLease help!