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"What size is this zirk?" and "What is this for?" pics

2023 Views 11 Replies 6 Participants Last post by  AlfieDog, 
AlfieDog
2
Ok, ok I think I get what maintaining an old (1955 Ford 850) working tractor is all about now. When you go to work on one problem you discover or create new ones!! It's the best way to learn if you've got the time and inclination, which fortunately I do.

While brush hogging yesterday, the lynch pin and bolt holding the top link to the rocker arm ran away from home without my permission.:Stop: This caused the top arm to fall into the spinning ORC and break the Zirk fitting.:crybaby:

Question #1: I want to pick up a replacement Zirk on my way to the farm this weekend but don't what size to buy. Can anyone tell the size by the attached picture?

Question #2: Anyone know what that wing-nut looking fitting is for between the oil filter and starter motor?

As always, your help and experience is always appreciated.:trink39:

Joe

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S
The zerks in your ORC should be 1/8" NPT (the larger size).

The "wing-nut looking thing" is a petcock for draining the block (cooling system).
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AlfieDog
Thanks Steve.

I couldn't find a picture in the manual or parts catalog showing the petcock so I was at a loss.

I just called the guy we bought our brush hog from about a year ago and he thinks the ORC is metric. (We bought the tractor from his dad about 15 years ago).

He didn't know the Zerk size off the top of his head so I'm still not sure what size to buy.

Joe
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S
AlfieDog said:
He didn't know the Zerk size off the top of his head so I'm still not sure what size to buy.

Joe
Click to expand...
Got a Harbor Freight close? I buy the zerk assortment from them. Has both sizes (1/4" and 1/8"NPT). The 1/8"NPT is actually the larger of the 2... and that's what my ORC takes... I'd pretty much guarantee you that's what will fit in yours.
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AlfieDog
No Harbor Freight in Missouri but we have similar outlets where I can probably get the assortment pack.

I'm a bit confused: I assumed a metric ORC zerk size would be in mm and not inches.

Thanks again,

Joe
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raytasch
If you can not find an assortment pack just go to a good parts store like NAPA and get one of each diameter size. Figured out how you are going to remove the broken zerk?
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Ken N Tx
raytasch said:
If you can not find an assortment pack just go to a good parts store like NAPA and get one of each diameter size. Figured out how you are going to remove the broken zerk?
Click to expand...
Removing it does not look like a problemm

Remove it and take it with you..:fing32:
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AlfieDog
I unscrewed it after it broke with a ratchet to try to figure out what it was. I should have brought it home with me so I could match it up at the store. :banghead3

I was concerned that someone else might use the tractor and possible cause additional problems if the fitting wasn't screwed back in. (That's what I get for thinking.)

I think I also need to be careful to get the proper thread depth on the new one.
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JohnW
That zerk is a 1/8 pipe thread that is more or less universal to all ORC. Napa or most any auto parts place will have them.
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AlfieDog
Thanks everyone.

I went up to my local Dickey Bub and bought a 3 pack of 1/8" NPT straight grease fittings and I am confident that that will do the trick.

This community has been a great service and I am actually learning a lot. Hopefully I'll be able to return the favor to the the future newbies. :trink39:

Joe
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souNdguy
yep.. without a doubt.. the fitting is 1/8 npt.

whoever told you metric.. you might want to avoid his advice. :(

soundguy
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AlfieDog
Update: I went to the farm yesterday and installed the 1/8" zirk fitting which was the correct size as everyone suggested.

While using the tractor I experienced first hand the surging problem I posted about previously. I'll start a new post about this soon.....

Thanks
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