2 Piece Drive Shaft - No coming apart....

[CalgaryBiker007]

Hello. I have a 1977 GMC 1500. The carrier bearing is shot. I removed the 2 piece drive shaft from the truck. The issue is, the 2 piece drive shaft is not separating apart. It pulls out most of the way but something seems to be stopping it from coming apart. Can anyone tell me why and how to separate the shaft into 2 units so I can remove the carrier bearing. Is it the grease nipple? Does it need to be removed for the shaft to separate?

 

[Honky Kong jr]

Hello. I have a 1977 GMC 1500. The carrier bearing is shot. I removed the 2 piece drive shaft from the truck. The issue is, the 2 piece drive shaft is not separating apart. It pulls out most of the way but something seems to be stopping it from coming apart. Can anyone tell me why and how to separate the shaft into 2 units so I can remove the carrier bearing. Is it the grease nipple? Does it need to be removed for the shaft to separate?

Is there a sheet metal nut at the end of the female part of the shaft? If so you will need to remove that and it should just pull apart. I would mark either part so when you put it back together it will be phased correctly if not it will shake your teeth out and damage your output shaft and pinion seal.

 

[Old77]

Thread moved to the proper section

 

[CalgaryBiker007]

Awesome. Thanks so much. My brother actually told me the same thing. Mystery solved and job done. Thanks so much Honky Kong jr. If anyone in future is searching and comes across this thread, I made a brief video on what it takes to change the bearing to hopefully help others. Good note above as well about orientation. My drive shaft splines were both actually indexed, though I did not know that when disassembling so I marked the orientations at either end of each spline to be sure it went back together the same way. After it was apart, I saw it was indexed so it can only go together 1 way. A nice surprise.

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[Honky Kong jr]

Glad it all worked out. I know about the double spline but wanted to cement the fact that it needs to go back the same way. Also just in case some one before you modified the shaft, its better safe then sorry I always mark them. Some times redundancy isn't a bad thing.