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Discussion Boards > Active Subjects > Messages as Posted > Diesel Fuel Lubrication Engine Additives Forum

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 02-18-2004, 07:47 Post: 77199
wigglybridge

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 Stripped Grease Fitting

SO, before y'all helped me get my chains...

... I managed to pull a dumbo, and slid sideways into one of my buildings, stripping out a zerk fitting.

There wasn't much 'meat' left to get it back in, but I tried re-tapping it. Unfortunately, the part I was tapping had been bent slightly and I didn't know the layout inside, and encountered another part with the tap. Didn't cause any damage, but didn't tap adequately either. Tried again at the right angle, but now there's not enough meat to hold.

I would guess I'm not the first guy on earth who's done this -- is there some kind of standard repair? Knowing zero, my imagination is thinking some kind of sleeve of soft material that a new zerk would basically "self-tap", expanding the material into the hole at the same time.

Any suggestions?






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 02-18-2004, 07:54 Post: 77200
Chief



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 Stripped Grease Fitting

Not sure if I am following your description but it sounds to me like you broke off the zirk fitting part protruding out of the treaded hole. Are you sure you got all of the zirk fitting removed? If not you may need to use and easy-out to remove the threaded sleeve of the zirk that may still be broken off inside the hole. If the threads were damaged; you might try cleaning them up with a tap.






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 02-18-2004, 08:03 Post: 77201
shortmagnum

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 Stripped Grease Fitting

If you did just strip out the threads you can usually find a zerk with larger thread diameter. Auto parts stores or tractor supply would have them.






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 02-18-2004, 08:14 Post: 77203
DRankin



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 Stripped Grease Fitting

I am trying to imagine which grease fitting you wanged on a 4110..... they are all pretty well protected.

Was it on the loader?






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 02-18-2004, 08:17 Post: 77204
ScooterMagee



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 Stripped Grease Fitting

Zerks are available in several sizes. The common ones are 1/8" NPT and 1/4" NPT, these require a pipe tapped (tapered threaded) hole. There are also 1/4"-28, 5/16"-24 and 3/8"-24, these have straight threads and would require a standard tapped hole. Any or all of these should be available at auto parts stores, farm stores or a fastener supplier.






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 02-18-2004, 08:20 Post: 77206
wigglybridge

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 Stripped Grease Fitting

Chief, the fitting pulled out completely and cleanly, in fact I have it and it's like new, the threads on it still have some paint on them (not sure WHY they were painted the same color as the blower).

Unfortunately, the threads on the part I'm trying to tap INTO are all buggered now.

Magnum, thanks for the tip -- my hardware store only had zerks about the same size in US and metric. I'll check a few auto stores this morning.






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 02-18-2004, 08:27 Post: 77209
wigglybridge

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 Stripped Grease Fitting

DR, sorry I wasn't clear, it was the *blower* I snagged on the building and took the fitting out of.

Scooter, thanks for the dimension info! Part of my problem then is that the hardware I took the zerk into didn't know this. It is now obvious that it was the NPT type, tapered thread. They gave me a 1/4-28 tap.

Guess I'll see if I can get a few of the sizes at the auto store. Thanks again!






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 02-18-2004, 08:42 Post: 77210
AC5ZO

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 Stripped Grease Fitting

You still have a few options.
If you cannot retap the threads due to metal being stripped out, then there are also zerks that will drive into straight holes with a hammer.

Another option would be to clean the grease out of the remaining threads and use a good epoxy like JB Weld to bond the original zerk back into place. You can always get the zerk out by fracturing the epoxy or by heating it till the epoxy softens.

If you still have some threads and the zerk just won't tighten in the hole, there are some Loctite retaining compounds that will fill gaps. These will work if you know how to use them, but I would probably prefer the epoxy because it is easier to control where it goes. (and keep it out of the bearing.)

If the location is at a place where you can weld, you can make a little flat plate and weld it over the stripped out hole. The plate would have a hole tapped in it for a smaller size zerk. You can protect the threads during welding with carbon paste, antispatter spray, or other chemicals. Make sure that the bearing housing is disassembled and clean before you weld on the new metal plate. (I have made these before in the form of little cups with the zerk protected down inside. That way, the zerk will not be hit again.)






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 02-18-2004, 08:43 Post: 77211
DRankin



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 Stripped Grease Fitting

Two clues: Painted and intact. The paint most likely came from seepage when the item was painted.

If the is room for paint to seep around the threads, it was never securely in place to start with..... and the intact nature of the fitting goes to support that conclusion also.

I am betting the hole was oversized to start with ( or the zerk was undersized). Is it possible to disassemble the part in question?

Sometimes it is easier to drill a new hole and start all over again with parts that have known dimensions.






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 02-18-2004, 09:05 Post: 77213
Murf

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 Stripped Grease Fitting

As Dr mentioned, if the zerk was in the carrier bearing on the side of the unit it will come off easily. In fact it might be less grief to replace the end plate than to try fiddling around with it for long.

Other than that the JB Weld sounds like the best bet as long as it's warm enough for it to setup properly.

I have also had good luck in the past with lining a stripped zerk hole with silver solder, which is MUCH harder than normal lead solder, and then chasing the threads out with a 4 way zerk tool. If it is in a bearing though you will need to disassemble it so that you don't melt the seals.

Best of luck.
Best of luck.






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Discussion Boards > Active Subjects > Messages as Posted > Diesel Fuel Lubrication Engine Additives Forum

Thread 77199 Filter by Poster:
AC5ZO 2 | blizzard 3 | Chief 1 | DRankin 2 | jeff r 1 | Murf 4 | ScooterMagee 1 | shortmagnum 2 | wigglybridge 10 | yooperpete 1 |




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