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02-07-2021, 03:54 PM | #1 |
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Grease fitting size for 1937 ford spindles
What is the correct size grease fitting for 1937 ford spindles.
Thanks Mike |
02-07-2021, 10:41 PM | #2 |
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Re: Grease fitting size for 1937 ford spindles
I would thing 1/4-28 thread size
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02-08-2021, 06:56 AM | #3 |
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Re: Grease fitting size for 1937 ford spindles
I can confirm 1/4 - 28 (UNF)
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02-08-2021, 08:25 AM | #4 |
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Re: Grease fitting size for 1937 ford spindles
according to the parts book it is 1/8 pipe thread
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02-08-2021, 08:42 AM | #5 |
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Re: Grease fitting size for 1937 ford spindles
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02-08-2021, 08:58 AM | #6 |
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Re: Grease fitting size for 1937 ford spindles
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02-08-2021, 09:20 AM | #7 |
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Re: Grease fitting size for 1937 ford spindles
Kurt is correct, they are pipe threads, not 1/4-28 keeping in mind that the fitting has seal against leakage. They are so close to one another that it is easy to mistake one for the other.
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02-08-2021, 09:41 AM | #8 |
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Re: Grease fitting size for 1937 ford spindles
they are Ford #353043-S7 which is 1/4-28 1/2" tall according to the Green Book, but in the 1928-38 catalog it lists 1/8" npt for 37-38 and 1/4-28 for 34-36
As David Says, they are close as 1/8" NPT is 1/4-27 so you can actually managae to install the wrong one and it'll still somewhat work |
02-08-2021, 03:24 PM | #9 | |
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Re: Grease fitting size for 1937 ford spindles
Quote:
1/8 pipe and 3/8-24 are the one that are close. I just finished putting kingpins in a pair of 37 spindles and they are 1/4-28. I have 3 more sets and they are 1/4-28. Compare a 1/8 pipe fitting and a 1/4 bolt to see the difference. Bill |
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02-08-2021, 03:33 PM | #10 | |
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Re: Grease fitting size for 1937 ford spindles
Quote:
Bill |
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02-08-2021, 03:35 PM | #11 |
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Re: Grease fitting size for 1937 ford spindles
I know my 32 spindles are 1/8 pipe but my 39s are 1/4-28. So at some point in between Ford made the change.
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02-08-2021, 04:26 PM | #12 |
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Re: Grease fitting size for 1937 ford spindles
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02-08-2021, 04:53 PM | #13 |
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Re: Grease fitting size for 1937 ford spindles
I know my 32 spindles are 1/8 pipe but my 39s are 1/4-28. So at some point in between Ford made the change
35 Fords have 1/4 28 NF grease nipples, so change must have occurred then
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02-08-2021, 06:02 PM | #14 |
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Re: Grease fitting size for 1937 ford spindles
As far a a grease fitting sealing because of a taper, the 1/4-28 fitting are tapered, even though the threaded hole is not. If you look close at a 14/-28 grease fitting you can see the slight taper. They are supposed to tighten at the last thread and seal, at least seal enough so that grease doesn't squirt out.
The 1/8 pipe ones are also tapered, just like a pipe fitting would be. As others have said 1/8 pipe is much bigger than 1/4 inch. |
02-08-2021, 07:20 PM | #15 |
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Re: Grease fitting size for 1937 ford spindles
My bad, I guess I was thinking of the '32-'34 fittings which are 1/8" pipe threads.
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02-08-2021, 07:29 PM | #16 |
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Re: Grease fitting size for 1937 ford spindles
Oh lord, it sounds like I need to buy both!!! I should have pulled them out before I had the axle cleaned up and painted. As always thanks, this site is awesome!!
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02-09-2021, 10:04 AM | #17 |
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Re: Grease fitting size for 1937 ford spindles
I looked thru all my individual chassis parts catalogues to clarify the issue. They didn't. The 1/8" pipe grease fitting is listed as 353027-S7 and then its called 353047-AS7 and eventually 353043-S7. But it is eventually listed as being used for 33-34, 37, 38-48.
The 353034-S7 1/4" x 28 grease fitting seems to have been used on some 34 spindles and on all 35-36 spindles. God Bless Henry and his Merry Men!!! |
02-09-2021, 10:49 AM | #18 |
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Re: Grease fitting size for 1937 ford spindles
I have found nothing but 1/8" NPT on each and every 39-40 spindle I have ever worked with.
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02-09-2021, 04:33 PM | #19 | |
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Re: Grease fitting size for 1937 ford spindles
Quote:
Kube, I've got 2 sets in front of me and 1 set I just installed on the axle, all 37-41 round back spindles. All have 1/4-28 threads I just put the grease fittings in last night 1/4-28 stainless fittings. Bill |
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02-09-2021, 05:47 PM | #20 |
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Re: Grease fitting size for 1937 ford spindles
1/8-27 NPTF specs, thread dia is listed as .390
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