np208 Is this normal

[marks86]

pinion support question

I have a 1986 k10 Chevy with a 14bolt rear. The guts are out of a m1028(4.56 Detroit) but the housing is from a 1989 suburban. I've read somewhere that the pinion supports are different from the old housing vs the new ribbed style housing. Could this be my rear end problem I've been chasing?

 

[marks86]

I've been trying to track down a bearing noise/wobbling driveshaft issue, which sounds like its coming from my transfer case. I figured I would remove the tail housing and replace the bearing, bushing, and seal. Once I removed the tail housing, the entire tail shaft became loose to the point where I can move it 1/2" in every direction.

Is this normal, or should the tail shaft stay tight even with the housing removed?

 

[86m1028]

Some movement is normal.
The bearing & bushing is there for that reason.

How many mlies are on that case ?
Why not go ahead & rebuild the 208 ?
Check your rear output yoke, u joints & mounts.

 

[marks86]

the TC only has 30k on it, but the tailhousing is off of a different truck(thanks to GL) with 140k so I think I should just start by replacing the bearing/bushing/seal

 

[marks86]

np208 Loose Slip Yoke

I noticed a small amount of up and down play in my slip yoke of my 208, so I pulled the tailhousing and replaced the bearing/bushing/seal that's in there. Put it all back together and still a small amount a play. Found the U-joint to be bad, so I replaced that and still I have a loose slip yoke.

Could it be the slip part itself is worn down and making it loose?

 

[detroitmuscle1986]

I just had the same issue with my M1028A1. It turned out that the drive shaft was a few inches too short.

 

[FMJ]

If the truck is lifted, and you use the stock length driveshaft it will have some wobble.

 

[marks86]

I just had the same issue with my M1028A1. It turned out that the drive shaft was a few inches too short.

how much slip was showing when it was to short? I just had my driveshaft cut down two inches and rebalanced because I installed a 12v cummins and nv4500

 

[detroitmuscle1986]

I want to say there was roughly 6 inches of slip yoke showing. It was in the TC a little more than an inch if that gives you a better idea.

 

[marks86]

I want to say there was roughly 6 inches of slip yoke showing. It was in the TC a little more than an inch if that gives you a better idea.

That could be exactly my problem, I will look into it hen I get home, thanks