front driveshaft u-joints - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JIMs70GMC** · 05-15-2004, 09:58 PM

Pulled my front driveshaft today to replace the u-joints. Any tips on replacing the u-joints in the double cardian end? Does the "centering ball" and associated parts need to be replaced? Thanks!

DINS 1 · 05-15-2004, 10:34 PM

you should replace the center ball. there is a kit for it. those joints are a pain to get all the parts apart and back together. if you are good at standard u joint then all you will need is some time and you can get the the double joint and center ball all changed out

1969 GMC · 05-16-2004, 12:08 AM

Agreed. It is pretty easy to do, but can take a while. Good luck

**JIMs70GMC** · 05-17-2004, 04:46 AM

I'm calling NAPA today. Thanks!

**JIMs70GMC** · 05-19-2004, 08:03 PM

OK. I got the 3 joints and took the u-joints/double cardian apart. It looks like there's a bearing and a seal, it also has a grease fitting. The seal is gone but the bearing had grease. Which part exactly gets replaced/rebuilt? There's the welded on yoke and the yoke that has the ball which has the bearing and grease fitting. Also there was a little spring that was broke in two pieces.

LONGHAIR · 05-19-2004, 09:42 PM

There should be a kit for the Constant Velosity joint. It will give you those parts. There is more to it than just the joints...........as you have found.

**JIMs70GMC** · 05-20-2004, 06:11 AM

something else: The u-joints, while all spicer 1310 type, have different NAPA P/N and the only difference I see is the grease fitting. The two for the double cardian (379) have the fitting coming out of the center at an angle while at the axle end (369) the grease fitting goes straight in the center. Also I marked the H-yoke but it appears to go either way. If I buy the centering yoke do you think it comes with the small parts?

05-15-2004, 09:58 PM	#1
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	front driveshaft u-joints Pulled my front driveshaft today to replace the u-joints. Any tips on replacing the u-joints in the double cardian end? Does the "centering ball" and associated parts need to be replaced? Thanks! __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

05-15-2004, 10:34 PM	#2
DINS 1 Registered User Join Date: Apr 2000 Location: Webster City, Iowa USA Posts: 572	you should replace the center ball. there is a kit for it. those joints are a pain to get all the parts apart and back together. if you are good at standard u joint then all you will need is some time and you can get the the double joint and center ball all changed out __________________ Wade "DURAMAX BURB" Burb on 2004 chevy 2500HD 4x4 Duramax chassis Long term project 2004 2500HD 4x4 crew cab GMC Duramax 4" lift 35's 79 RS Camaro

05-16-2004, 12:08 AM	#3
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	Agreed. It is pretty easy to do, but can take a while. Good luck __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

05-17-2004, 04:46 AM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I'm calling NAPA today. Thanks! __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

05-19-2004, 08:03 PM	#5
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	OK. I got the 3 joints and took the u-joints/double cardian apart. It looks like there's a bearing and a seal, it also has a grease fitting. The seal is gone but the bearing had grease. Which part exactly gets replaced/rebuilt? There's the welded on yoke and the yoke that has the ball which has the bearing and grease fitting. Also there was a little spring that was broke in two pieces. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

05-19-2004, 09:42 PM	#6
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	There should be a kit for the Constant Velosity joint. It will give you those parts. There is more to it than just the joints...........as you have found.

05-20-2004, 06:11 AM	#7
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	something else: The u-joints, while all spicer 1310 type, have different NAPA P/N and the only difference I see is the grease fitting. The two for the double cardian (379) have the fitting coming out of the center at an angle while at the axle end (369) the grease fitting goes straight in the center. Also I marked the H-yoke but it appears to go either way. If I buy the centering yoke do you think it comes with the small parts? __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

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