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Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 6:10 pm
by DHort

- 2931886s.jpg (6.56 KiB) Viewed 2939 times
How do you attach this item to your low speed adjusting part, and what should it look like when finished?
Thank u
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 7:08 pm
by RajoRacer
Not any Ford part I've seen ??????????
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 7:30 pm
by John kuehn
The nut adjuster didn’t look right to me either. For curiousity I looked this up and Lang’s sells these for easier adjusting purposes. Maybe a copy of and older aftermarket part?
https://www.modeltford.com/item/3420EX.aspx
New one for me.
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 8:05 pm
by DanTreace
DHort wrote: ↑Thu Aug 22, 2024 6:10 pm
2931886s.jpg
How do you attach this item to your low speed adjusting part, and what should it look like when finished?
Thank u
Believe that extension threads over the end of the flats on the low speed screw, like a cap, to present a hex face for turning.
Maybe useful, if perhaps one old has rounded off flats, but the regular flats help to control half twists at a time for adjustment, maybe some like a hex for using a box wrench or socket
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 8:10 pm
by speedytinc
The way I read Langs description - it replaces the jam nut making it easier to get a wrench on, not so close to the HH casting.
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 8:23 pm
by DanTreace
speedytinc wrote: ↑Thu Aug 22, 2024 8:10 pm
The way I read Langs description - it replaces the jam nut making it easier to get a wrench on, not so close to the HH casting.
That is likely the use, from the photo didn't see a thru hole, figured it was a cap.
Makes sense as sometimes that lock nut is hard to move, as usually only a portion of the open end wrench can grasp it, due to the concave opening there.
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 8:42 pm
by jab35
From the Lang's part description: Slow speed adjusting nut, extended. Style of nut that is extended to make adjusting with a wrench easier.
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 9:55 pm
by RajoRacer
So - that replaces the Ford locknut ?
Re: Addition to low speed adjuster - how should this look?
Posted: Thu Aug 22, 2024 10:23 pm
by Allan
That nut would be a big help when adjusting reverse gear on RHD cars. The original jam nut is very close to the rear face of the bell in the housing. You need a thinned down socket/ring spanner to access it.
Allan from down under.
Re: Addition to low speed adjuster - how should this look?
Posted: Fri Aug 23, 2024 8:08 am
by DanTreace
RajoRacer wrote: ↑Thu Aug 22, 2024 9:55 pm
So - that replaces the Ford locknut ?
Yep, should have looked close at the part number Lang’s assigned.
T-3420 is the adjusting lock nut. Lang’s item number is 3420EX for the special extended lock nut.
Re: Addition to low speed adjuster - how should this look?
Posted: Fri Aug 23, 2024 8:44 am
by Jim Eubanks
A thick washer works just fine.
Re: Addition to low speed adjuster - how should this look?
Posted: Fri Aug 23, 2024 6:10 pm
by Original Smith
Don't use that crap. Nothing is easier than Ford's method, which I've been doing for 60+ years!
Re: Addition to low speed adjuster - how should this look?
Posted: Fri Aug 23, 2024 8:09 pm
by Allan
Larry, it is not uncommon to find the reverse gear adjuster locknut on a RHD car butchered by the use of a cold chisel to lock it on the adjuster. Far from being "crap", this little gem would solve that problem. Obviously, your limited experience on LHD cars differs.
Allan from down under.
Re: Addition to low speed adjuster - how should this look?
Posted: Fri Aug 23, 2024 8:16 pm
by KWTownsend
Use the 15/16" spark plug wrench to loosen and tighten the original jam nut.
Re: Addition to low speed adjuster - how should this look?
Posted: Fri Aug 23, 2024 8:21 pm
by John kuehn
As others mentioned getting a fit to the original nut didn’t always happen. I’ve got a few of the low speed adjusters that the nut were either the shoulders were getting worn down or rounded down. Putting a washer or two under the nut or the longer adjuster nut makes for a better wrench fit. I don’t know if Ford made a tool for that purpose but I use a fairly thin box end wrench for that purpose among others.
Re: Addition to low speed adjuster - how should this look?
Posted: Fri Aug 23, 2024 9:41 pm
by RajoRacer
The later Ford band ratchet tool included the 15/16" end opposite the ratchet end - great tool !