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Old 03-20-2008, 10:58 PM
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Default Zirc fitting

Unless I take the shaft off, I can't reach the Zirc on the front U joint of the rear shaft,. I have tried various grease gun fittings and no joy.

I want to replace the zirc with one thats angles so I can get a fitting on it. Will a standard one from NAPA work or is this metric and a specific thread type?
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Old 03-20-2008, 11:34 PM
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No help on the zirc but did you try the needle injector I mentioned over in the MUD thread awhile back? I'm curious to know if it was a complete bust or?? I bought one but I haven't had a chance to use it. For whatever reason I was able to get to that zirc this last time around. I figure my rear springs have settled a bit, decreasing the angle on the drive shaft.

I wonder, could you load up the rear end with enough weight to compress your springs enough to be able to get to that zirc? Maybe hook up the popup real quick?
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Old 03-21-2008, 12:03 AM
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Quote:
Originally Posted by corsair23 View Post
No help on the zirc but did you try the needle injector I mentioned over in the MUD thread awhile back? I'm curious to know if it was a complete bust or?? I bought one but I haven't had a chance to use it. For whatever reason I was able to get to that zirc this last time around. I figure my rear springs have settled a bit, decreasing the angle on the drive shaft.

I wonder, could you load up the rear end with enough weight to compress your springs enough to be able to get to that zirc? Maybe hook up the popup real quick?
It would take maybe what.....10 minutes to unbolt one end of the drive shaft and rotate it to where you can get to the zerk?
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Old 03-21-2008, 08:12 AM
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Originally Posted by Uncle Ben View Post
It would take maybe what.....10 minutes to unbolt one end of the drive shaft and rotate it to where you can get to the zerk?
Maybe the Zerk is tough to get at through the u-joint yoke? Otherwise I'm sorta confused, too.

I just block the front wheels, put the tranny in neutral and jack up one wheel in the back so I can spin the propeller shaft. It's actually kinda nice, I can spin the propeller shaft with my foot by pushing the tire. Front, well having old fashioned manual hub locks and part time case is really nice. :-)
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Old 03-21-2008, 08:52 AM
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Thanks, I have tried the needle nose, I have jacked the rear end up with the truck in Nuetral so I can move the shaft while I am in there. The closest I get is using a 90 degree fitting and it does not slide on fully to work. maybe its the way it was rebuilt but you can't get to the fitting because of the yoke.

I can take the shaft of and thats not a big deal, just while its off thought it would be good to change the zirc so I don't have to take it off next time

So back to my question.
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Old 03-21-2008, 08:55 AM
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Call Burt and ask Scott Rill how they do it. I doubt they remove anything. Time is money. Scott is a super nice guy, extremely helpful and knowledgeable, and therefore in high demand so you may have to wait for a return call. Tell him Bill Morgan sent you and you will only have to wait an additional half hour or so.
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Old 03-21-2008, 09:08 AM
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Trust me, there is no way to grease this zirc while it is on the vehicle, Robbie said try the needle fitting and the angle with the yoke is just so that I can't get it in da hole.. I will be pulling the shaft to grease it this weekend. I would like to replace the zirc while I am there.

The zirc's curent position is a result of the rebuilt I had done.
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Old 03-21-2008, 09:49 AM
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Zirks are sold in metric and SAE, but I'll bet many times an SAE gets screwed forceably into a metric hole. I have installed u-joints 'backwards' such that they are ungreaseable.
I felt like a total moron after I saw what I did.

The only solution is to remove and reinstall the u-joint. On my '66 Mustang, since it saw few road miles and no severe duty, I just left it. On a 'cruiser you 'wheel, you might want to re-orient it so that it can easily be greased. I see Metric zirks sold at chain auto parts stores, so they aren't hard to find.
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Old 03-21-2008, 10:07 AM
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Thanks Steve, If I snatlled one of thos right angle Zirc, I could grease it.
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Old 03-21-2008, 10:47 AM
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Quote:
Originally Posted by Romer View Post
Unless I take the shaft off, I can't reach the Zirc on the front U joint of the rear shaft,. I have tried various grease gun fittings and no joy.

I want to replace the zirc with one thats angles so I can get a fitting on it. Will a standard one from NAPA work or is this metric and a specific thread type?
I had the same problem on my driveshaft. I finally found a metric thread angled zirc at either NAPA or I think ACE hardware. You might want to give it a try.
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