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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Transfer Cases and Front Drivelines => Topic started by: timl1978 on August 05, 2011, 12:21:12 pm

Title: 1985 K-10 Front Driveshaft Grease Seal
Post by: timl1978 on August 05, 2011, 12:21:12 pm
Anyone know the part number for the seal that goes in the area shaded in the photo?  I believe it retains the grease over the splines...
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: Irish_Alley on August 05, 2011, 08:14:28 pm
I have never seen a seal. Might be wrong but I know I just grease till new grease comes out the splines where u circled
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: 1979C20 on August 05, 2011, 10:00:05 pm
From experience with the slip yoke in the middle of my 2 piece drive shaft, there is an oring inside of the dist cap on the female end of the drive shaft. That is what retains the grease. It slips onto the male end, you put the male in into the female end, and the dust cap threads onto the female end on the tip. I can post pics probably tomorrow if you need. But I believe the part you need is a Dust Cap.
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: timl1978 on August 06, 2011, 06:03:02 am
From experience with the slip yoke in the middle of my 2 piece drive shaft, there is an oring inside of the dist cap on the female end of the drive shaft. That is what retains the grease. It slips onto the male end, you put the male in into the female end, and the dust cap threads onto the female end on the tip. I can post pics probably tomorrow if you need. But I believe the part you need is a Dust Cap.

In the picture to the left the thing with the horizontal lines threads onto the male portion of the slip yoke.  The seal was within the cap.  It wasn't an o ring per se, more like a plastic or hard rubber seal...at least from what I could make of what was left of it.
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: Blazin on August 06, 2011, 07:37:48 am
Buddy of mine made a new one for his truck out of jute carpet padding. It works pretty good. It not so much a seal as it is to keep dirt etc. out of the splines. When you grease them a little come out past. I have never seen and O ring in one but I'm sure if you got one that fit snug inside the cap it would work.
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: mpullen66 on December 10, 2011, 03:13:05 pm
I was replacing the carrier bearing on my drive shaft and noticed the same thing. It appears there was a plastic or rubber seal under the cap. I went to the parts store and they looked at me like I was stupid. Any ideas?

I have an 87 2wd lwb 700r4
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: 1979C20 on December 10, 2011, 05:40:42 pm
Finally got a picture. I forgot about this thread. I guess it wasnt an oring.....
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: Irish_Alley on December 11, 2011, 03:02:17 am
never seen one like that i have seen a shock boot type of cove before
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: rustymitchell on December 11, 2011, 05:22:32 pm
Check this link out from northern drivetrain:  http://www.northerndrivetrain.com/category/cat_misc_DustCapAssys.html.  They list the Spicer part numbers and sizes when you click on the part details.  I'm not sure which one it is you need but I'd put my money on the third from the bottom.  My truck had splined cork seals on the drive shafts but there's not much left of them now!  Once you get slop in your splines these where out quick.
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: mpullen66 on December 16, 2011, 12:04:12 pm
Went to the local chevy dealership today. There is a seal under the cap. OEM part number 7827942.  $13.00 bucks!
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: 78 Chevyrado on December 17, 2011, 04:12:22 pm
anybody know if that seal is the same as the one on a 2-piece rear driveshaft for a '78 3/4 ton?  I need one too.
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: mpullen66 on December 19, 2011, 07:55:20 pm
I would think its the same part
Title: Re: 1985 K-10 Front Driveshaft Grease Seal
Post by: bake74 on December 21, 2011, 06:50:57 am
I was replacing the carrier bearing on my drive shaft and noticed the same thing. It appears there was a plastic or rubber seal under the cap. I went to the parts store and they looked at me like I was stupid. Any ideas?

I have an 87 2wd lwb 700r4

     The other place to check would be a drive line shop, I bet they deal with them a lot.