Drive shaft '91 L-98
#1
Racer
Thread Starter
Drive shaft '91 L-98
Anyone pulled the drive shaft on an L-98? I want to replace the U-joints. I know I need to drop the back half of the exhaust. Manual says to remove the driveline support also. Is it really necessary?
#2
I think you will have to remove that driveline support otherwise you wouldn't be able to move the diff back enough to get the shaft out. I chose not to change my drive shaft u joints during my overhaul, because, these stay in a straight line and don't flex very much at all so the wear would be very minimal. I did however change my half shaft u joints and put in brute force forged steel joints.
#3
Le Mans Master
The driveline support (C-beam) will have to be moved over but not completley removed. This means removing all of the bolts (could possibly leave 1 on the tranny end) and pushing it to one side to get the shaft out.
You do not have to move the diff - the shaft will safely slide into the tranny far enough to get everything apart. Putting the C-beam back is a real PITA but it will eventually go into place with enough messing around.
You do not have to move the diff - the shaft will safely slide into the tranny far enough to get everything apart. Putting the C-beam back is a real PITA but it will eventually go into place with enough messing around.
#4
Racer
Member Since: Feb 2002
Location: Benoni Gauteng
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Originally Posted by Dale1990
The driveline support (C-beam) will have to be moved over but not completley removed. This means removing all of the bolts (could possibly leave 1 on the tranny end) and pushing it to one side to get the shaft out.
You do not have to move the diff - the shaft will safely slide into the tranny far enough to get everything apart. Putting the C-beam back is a real PITA but it will eventually go into place with enough messing around.
You do not have to move the diff - the shaft will safely slide into the tranny far enough to get everything apart. Putting the C-beam back is a real PITA but it will eventually go into place with enough messing around.
#5
Racer
Thread Starter
Thanks
Thanks guys. I already replaced the half shaft joints. One of them was in really bad shape. That cleared up a vibration I'd had for a while. Don't feel anything in the propeller shaft U-joints but I already bought them so I'm going to replace them anyway. Didn't think you needed to move the diff. the slip joint on the tranny should handle that ok. Does on most vehicles anyway. I was just hoping I'd be able to do it without disconnecting the support. I've heard other guys describe it the same way (PITA) you did.
Any comments on the sealer the manual recommends applying to the mating surfaces? If you used one what did you use?
Any comments on the sealer the manual recommends applying to the mating surfaces? If you used one what did you use?
#7
Originally Posted by wsherrard
Anyone pulled the drive shaft on an L-98? I want to replace the U-joints. I know I need to drop the back half of the exhaust. Manual says to remove the driveline support also. Is it really necessary?
It's easy, no need to make a big job out of it by removing the driveline support also.
#8
Race Director
Originally Posted by Mr6spd
No!!! You don't have to remove or even touch the drive line support! Remove the rear u-joint bolts, slide the drive shaft slightly forward, and then you can move the back of the drive shaft to the driver's side. Then just slide it out the back.
It's easy, no need to make a big job out of it by removing the driveline support also.
It's easy, no need to make a big job out of it by removing the driveline support also.
#9
Racer
Thread Starter
Thanks Mr6spd! I was hoping someone would say that. I didn't take the straps off and try it but it looks like the thing should do exactly what you suggest. I'll give it a shot this week end. Mine is a 6 speed also.
#12
Safety Car
Originally Posted by black85vette
sealer on the bolts? what does it do? why is it needed?
#13
Safety Car
Originally Posted by 87SAM
With that said, I have not used it because it’s such a tight fit getting that thing back in there that I figured most of the sealant would be pushed out anyway.