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Old 08-13-2004, 11:32 AM
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King pin won't take grease

Anyone got a neat trick to resolve this? Application is a 55 Chevy truck. No front end problems..but one side won't take grease.

Thanks,

Keith

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Old 08-13-2004, 02:14 PM
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The grease zerk is likely defective. Replace it and try again.
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Old 08-13-2004, 02:49 PM
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sorry didnt see how old the message was
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Old 08-13-2004, 07:33 PM
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grease

Take the fitting out and try cleaning the hole out with a drill bit by hand. I have used a drill motor, don't drill to deep. If it don't work, what to heck, you goina change them anyway. After you've drill it , replace the fitting, have someone turn the wheel why you keep the pressure on it. lol
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Old 08-13-2004, 07:49 PM
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If all else fails (and space allows), you can buy a tool from Napa or any tool truck for about 15-20 bucks. It's just a tube with a plunger about 1/4" dia. that you fill with grease and whack with a hammer while holding it against the zerk. It will drive grease through the toughest of dried up old grease/dirt.
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Old 08-13-2004, 08:12 PM
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Well I actually can try all of these ideas..Thanks..

Ya know..about 30 years ago..when the JC Whitney catalogs came in the mail every week..I remember a product they had for this.

It was a small cup..with the same thread as a Zerk fitting..You screwed it in where the zerk fitting goes...fill it with your favorite penetrating solution...and it was suposed to free these buggers up..Man I wish I bought one

Thanks all..

Keith
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Old 08-14-2004, 03:42 PM
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slickem

Slickriffs, You can have a pump with penetrating oil. Take an old hand grease pump with a flew-able hose, remove the couple end. if the barrel screws off,do it, pull the stem out and lock it in the grove on the stem to hold it out. Pour in the oil. Holding it up straight, screw the pump back onto the barrel. Be careful not to bump the stem and loose the oil before you get it back together. Now remove the grease fitting and screw on the hose, you'll have to turn the hole pump to screw on the hose. Now start pumping. If it builds up a lot of pressure, you know its stopped up. Again, carefully, I was told that those pumps will develop 3000 psi.

"WHERE THERE'S A WILL
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Old 08-15-2004, 06:19 AM
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Hey Lanier thanks..

Not sure I can picture everything you said..but in general it looks like you can fill the flexible hose with oil...and then screw that in somehow where the zerk went in...It will probably take alot of pressure likely, so I like the idea of screwing it in. Are you using the threads on the end of the flexible hose?

I used to spend time thru business in Gainesville..actually lived on Lake Lanier when I stayed down there. Haven't been down in a year and a half..Hope you guys are getting rain!

Thanks,

Keith

Hey best mech..Sorry I didn't see this post earlier..

Seems like an interesting tool..I'll see if I can find it on the web..


Seems to me one of these techniques will work..

Thanks for the reply..

Keith
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Old 08-16-2004, 01:39 PM
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hey ya think Home Depot would carry Zerk fittings? I need a few but don't want to but a 156 piece assortment.

Thanks,

Keith
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Old 08-16-2004, 01:43 PM
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Check at your auto parts store. They usually carry small packages.
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Old 08-16-2004, 06:02 PM
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had the same problem with a ford. heating up the kingpin assembly good and hot, but not too hot (redhot a no-no) and that will help to liquefy the old grease. If you are brave, try pumping some new grease in while it is still hot, but be careful in case it finds a way out under pressure.
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Old 08-16-2004, 06:41 PM
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Hey Rat,

Ya I thought about heat..I guess the first thing I learned is that it's actually old grease thats clogging it. As I mentioned I can try all of the above..cause they're all different approaches..

Hopefully something will give..So I take it your situation did work out?

Thanks Keith
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Old 08-16-2004, 08:52 PM
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yeah it was part of the routine maintenance!
I made the mistake of not checking what kind of lube was in the gun I borrowed at work. turns out it was some kind of clinging chain lube that basically plugged up the whole kingpin. The heat did work to loosen it up, but it took awhile to work it out of the system. try thinning down a batch of grease as well, (with oil) and pack it in the grease gun. heat up the kingpin area and gently squeeze it in may take a few trys, but do not get carried away with the heat (250 degrees or less). get the wheels up off the ground and work it lock to lock. repeat until you get grease showing around the bearing. If you want to go one step farther, keep pumping in grease until all the old crappy looking stuff is purged. it wont get rid of all of it, but will be better than before without disassembly.
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