Author Topic: How to service front driveshaft U-joints?  (Read 6357 times)

Offline CruzinHigh

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How to service front driveshaft U-joints?
« on: November 02, 2008, 01:25:57 pm »
The front one that joins to the diff seems easy enough.   But what about those back ones that mate up to the transfer case?  I guess they're ok, but I assume they're the originals and I'd like to get new ones just for safety sake since I am going through the entire driveline.

I should also add that this is an NP 208C

Also, do you need to index the front properly?  I forgot to mark it before taking apart on the front, DOOH!!  :-\


« Last Edit: November 02, 2008, 07:38:47 pm by CruzinHigh »
Mike Carter
1986 Chevy K-10 4x4

8" lift project on the way soon!

Offline 76 k10

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Re: How to service front driveshaft U-joints?
« Reply #1 on: November 02, 2008, 08:56:32 pm »
your gonna have fun getting those out lol

Offline joesgarage71

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Re: How to service front driveshaft U-joints?
« Reply #2 on: November 03, 2008, 05:51:41 am »
 I'd take it to a driveshaft shop and have them replaced. Those are alittle harder but not impossiable see they have hot plastic shot into them to hold the caps in place, heat/press to get them apart, the new joints have clips to install. Mark with a punch before starting(index)
Steve
78' K-20 355/SM465/twin stick 205 6" on 36's
14 bolt FF/big bearing Dana 44 4.56 gears

92' GMC C-1500 454/4L80E/14 bolt

Offline CruzinHigh

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Re: How to service front driveshaft U-joints?
« Reply #3 on: November 03, 2008, 08:20:48 pm »
Thanks Joe.

Think I'll price the job locally but I do have a U-joint / Balljoint tool so I might give it a shot.  The trusty acetylene torch might be helpful too!   ;D
Mike Carter
1986 Chevy K-10 4x4

8" lift project on the way soon!

Offline VileZambonie

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Re: How to service front driveshaft U-joints?
« Reply #4 on: November 03, 2008, 08:23:20 pm »
yes heat around the perimeter will force the plastic out. Make sure you have safety glasses on. They're just like any other u-joint however there is a cv inside the cardan joint. If that's shot now is the time to replace it also.
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Offline dunedigger

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Re: How to service front driveshaft U-joints?
« Reply #5 on: November 03, 2008, 08:30:18 pm »
I've always gotten out of that one, I have had my front shafts lengthened in my trucks when lifted and had them go through the whole thing at that time.  They don't look too fun.

Offline CruzinHigh

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Re: How to service front driveshaft U-joints?
« Reply #6 on: November 05, 2008, 07:26:55 pm »
I've always gotten out of that one, I have had my front shafts lengthened in my trucks when lifted and had them go through the whole thing at that time.  They don't look too fun.

And that brings a good point too, I plan to lift this truck 8" in the next few years, but I don't suppose that will really effect the fact I need to pay attention to the joints and the cardan joint too.  Thanks for pointing that one out too Vile.  I was going to remove the boot there and inspect the guts but now for sure I will just plan a replacement.

Mike Carter
1986 Chevy K-10 4x4

8" lift project on the way soon!