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Ford 9N, 2N & 8N Discussion Forum

Grease Fitting Size?

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8N'r

08-10-2006 13:06:57

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I need to replace the grease zerk on the arm that the leveling box resides. I have an 8N. Does anyone know the correct size for this zerk? Are all the grease zerks for the 8N the same size? I know you can buy them by the bunch and are relatively inexpensive-- Thanks---Tim (WI)

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don b

08-11-2006 06:54:05

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

Just a little note on the grease zerks.The original zerks on the 8ns DID NOT HAVE THE SPRING LOADED BALL IN THEM,just straight thru zerks. don b

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Tim PloughNman Daley

08-11-2006 03:37:12

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

8nR-
Russ is correct. There are two types of pipe threads-straight and NPT (tapered). The tapered is designated by the ID (inside diameter) of the pipe fitting, not the thread size. For example a 1/8 NPT has a tapered thread of 27 per inch. The straight pipe thread is 28. 1/4-20 is a NC thead standard thread- different animal. The slope of taper is 3/4" per foot. Take off old fitting and take to your local tractor yard \/dealer and he can match it up. HTH.

Tim Daley (MI)
*8NI55I3*

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Russ SoCal

08-10-2006 18:57:43

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

At the risk of causing information overload, Tim, I'll mention that the Master Parts Catalog calls for "fitting, lubricator 1/4"-28."
Russ

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FLAcharlie

08-10-2006 17:59:21

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

not to guess WHY your zerk(s) need replacing, but I'll comment anyway that when I got my 8N, really all the zerks seemed "no good", would NOT take grease. I found though that if I stuck them with the point of my jacknife, it freed them up, and now all my zerks work just fine. Just a thought.

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8N'r

08-10-2006 18:06:20

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Re: Grease Fitting Size? in reply to FLAcharlie, 08-10-2006 17:59:21

Charlie---just the one by the leveling arm needed to be replaced. Somehow the end got broken off and I finally was able to get it loose. All the others seem to be in good working order----Tim (WI)

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8N'r

08-10-2006 17:56:24

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Thanks to All---Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

Thanks guys---I will pick up some of each size. It won"t hurt to have a few xtra--Tim (WI)

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Dan

08-10-2006 17:09:52

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

I just measured them, and one size has 1/2" diameter threads, and the other ones have 3/8" diameter threads. I do not have the actual packages like I thought, just in bags.

HTH,
Dan

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Dan

08-10-2006 17:10:30

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Re: Grease Fitting Size? in reply to Dan, 08-10-2006 17:09:52

Sorry - make that 1/4" and 3/8"...

Dan

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Hobo,NC

08-10-2006 14:39:15

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

1/4 for the arm, next size up izz a 1/8 NPT

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Ross Pugh(NC)

08-11-2006 07:46:38

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Re: Grease Fitting Size? in reply to Hobo,NC, 08-10-2006 14:39:15

Hobo, buddy, I gotta rag you on this one. Are you sure the next size UP from 1/4 is 1/8???? I think you may have you numbers reversed!!

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Hobo,NC

08-11-2006 08:57:43

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Re: Grease Fitting Size? in reply to Ross Pugh(NC), 08-11-2006 07:46:38

All I know izz I have my fit'ins baged and marked, small'izz size izz marked 1/4 X 28 STR. next big'er size izz marked 1/8 NPT
I git'em at a mill supply house that has all size'izz by the thou'zin and mark the bags before I reach in the bin and git me a hand full. Tecknical'ly I kin only read the bag and not a Zerk-X-Perk. Even if I were I prob'bly would fergit Zerk 101 and revert back to read'ing the bag.

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Dan

08-10-2006 13:12:07

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:06:57

I replaced all of them on my tractor - and they are not all the same size. The zerts on the tie rod ends are smaller than say the front spindle housing. Also, there are angled zerts like the clutch linkage. If memory serves me, there are only two common sizes. I got a pack of the small, a pack of the bigger, and a pack of the mixed with angles. I replaced every one with these packs. Oh, and get the SAE, not the Metric versions.

Dan

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8N'r

08-10-2006 13:22:59

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Re: Grease Fitting Size? in reply to Dan, 08-10-2006 13:12:07

Dan--searching the archives, I only found 1 size mentioned that was a 1/4"-20 and it wasn't location specific. What is your best guess for this 1/4"-20? Small, medium or large? I am getting supplies put together today for visiting my 8N this weekend. I will get a bag of each--thanks. Tim

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Dan

08-10-2006 14:00:52

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:22:59

I wan't to say the two sizes were 1/4" and 3/8" - but don't hold me to it. I can check when I get home, as I have the packages in my garage.

Dan

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Dan

08-10-2006 14:00:49

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Re: Grease Fitting Size? in reply to 8N'r, 08-10-2006 13:22:59

I wan't to say the two sizes were 1/4" and 3/8" - but don't hold me to it. I can check when I get home, as I have the packages in my garage.

Dan

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wayne,Az

08-10-2006 15:02:15

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Re: Grease Fitting Size? in reply to Dan, 08-10-2006 14:00:49

I think the ones you are calling"smaller" are 1/4 inch x 28 thread..The ones you call "larger are 1/8th inch Npt. Wayne

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gahorN

08-10-2006 20:00:01

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Re: Grease Fitting Size? in reply to wayne,Az, 08-10-2006 15:02:15

I was working on several pieces of equipment that needed zerk fittings, and was shocked to see what they sell for at TS, NAPA, etc. Four fittings cost anywhere from $2 to $4.25. Bought 'em anyway in disgust. Was in the Chinese Tool store (Harbor Freight)the next week to look around and bought a large assortment of zerks of various sizes/thread-pitch etc, and the price was $4 for about 50 of them. DOH!

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