I will get right to it.

My 1963 ford F100/223 with 3 speed on the tree, (top loader) has an issue I and my transmission guy ( yes he has been in business for 35 years and has worked on these before) and I can't figure out.
The parts diagram I have only show a 3 speed over drive. It looks like the same transmission, but the overdrive unit bolts onto the rear of the tranny. (like to get one of those but that's a different story.) The diagrams are from 1963 Ford Truck complete parts catalog, and the 1961 Ford shop manual with the addendum for 62 & 63.

The problem is the truck doesn't down shift from 3rd to second Grinds alot but no shiftee to 2nd unless you down shift to 1st and then up to second (keeping the clutch in from 3 to 1 to 2, then releasing. He took it apart and ordered new parts for it. Now it seems the splash washer(?) makes it so you can't get the spring clips that hold the primary shaft and gears in place. So e installed everything without it.

What happens is the the primary shaft slides forward a little, which allows the brass synchro 33 tooth rings not to engage and grind away, and it won't down shift into second. Up shifting from 1st isn't an issue.

Anyone have this problem and/or know a solution? I put more pics up in my garage mostly of the outsdide of the tranny with the identifying #'s.

There are a few of the truck as I was working on it. I taught myself to weld, Grind and paint on this truck, so it is far from perfect but we love it as a daily driver, and not worry about dings and dents.


Any Help with the tranny issue would be appreciated, or information about getting the overdrive!

Thanks

 

You have to have all the washers, bearings and parts right or it won't work
I rebuilt a tranny the parts guy sold me 2front bearings and could not tell the difference unti I compared the old to the new just an 1/8" different get
an exploded view from service manual or parts book/cd
Or buy another tranny I like having a parts tranny good to compare

 

^ 1963/87 Ford type 3.03: There is only one input & one output shaft bearing. ^

C3AZ-7025-C .. Input Shaft Bearing: 3.1493" O.D. x 1.5745" I.D" x .706" wide // C3AZ-7025-B .. Output Shaft Bearing: 2.8343" O.D. x 1.3767" I.D. x .666" wide.

Introduced in 1963 F100/250 (used thru 1986): Ford type 3.03 3 speed manual all syncromesh transmission. Also used in myriad 1963/80 cars, 1965/87 Econolines, 1966/77 Bronco's.

Also available (as an option) for 1961/64 F100: Borg-Warner T-86 3 speed manual with overdrive, 1st gear is non syncromesh.

See pic: Ford type 3.03 has 1 brass synchronizer blocker ring (7107) on the 1st gear syncro, 2 brass synchronizer blocker rings (7107) on the 2nd/3rd gear syncro.

When these brass rings wear, the truck grinds when attempting to put it into gear, the trans can also pop out of gear.

1st gear syncro blocker ring is different than 2/3 syncro blocker ring. Parts should be EZ to find for this trans.

 

Here are some pictures of my tranny #'s. Iwill send more. The syncro still have slop in them. The Tansmission guy tells me he used those part #'s Number dummy sent. I am headed down to mic the parts.

Could this not be a 63?

 

here are some pictures of the gears and shafts with measurements, number dummy's sizes were right on and they matched the dimensions for the bearings in this tranny. The output shaft measures 15", I thought I read they were supposed to be 17.5".

Any Thoughts or Ideas? should I replace the whole 7124 assembly?

When assembled in the transmission housing, the 2nd and 3rd synchro blocker rings don't completely engage.



the gear to the left is from something else.

 

HEF-F = 1963 F100/250 223 I-6 Ford type 3.03 3 speed manual all syncromesh transmission / Transmission Parts List # 70.1N

3 pics from 1957/63 truck catalog: Left upper, Right and Left lower. Left upper pic, scroll down to transmission parts list 70.1N

 

Thanks Number Dummy! I will compare and count all teeth/spline. the spline/clutch teeth seem to be right 31 helical and 33 synchronize block ring with 3 slots. Guess I will look also for a missing washer.

 

Not that you need to know ANY of this information, but you may wish to know: the transmission housing (group no. 7006) was cast "2K2", or "1962 October 2". The clutch housing (group no. 7505) was cast "2K8", or "1962 October 8". This latter housing was cast by the Cleveland Foundry, represented by a cast-in "F" within a "C". These dates are not inconsistent with part numbers beginning "C3" or 1963, and they would not be inconsistent with a truck assembled October '62 or later.

Regards,

Steve

 

What year trucks were being assembled in October of 1962? 1963's! So the C3AR & C3TR casting number prefixes pictured in post 4 are apropos.

The 1963 part numbers along with the vehicles were introduced in September of 1962, as 1963 production began in August 1962.*

And, some of the 3.03 parts were also used on the previous (1953/62) Borg Warner T-86 3 speed that did not have a 1st gear syncro.

For example, the TAAK 7505-B bell housing casting number was first used in 1953.

*August 1962 serial number ranges: 320,000-325,000 = 1962 all trucks/Econolines / 325,001-329,999 - 1963 all trucks/Econolines.

 

Bill,

I very, very carefully chose the term "not inconsistent" because "consistent" might imply to many that ONLY such dates were consistent with a C3 prefix part number whereas MANY, MANY dates, in '62, in '63, and even in subsequent years could be entirely consistent with the C3 prefix.

As you well know, a C3 prefix part could be produced any time from September-ish '62 until production of that part ceased. I don't randomly choose terms such as "not inconsistent" or avoid a term such as "consistent"!

I have none of your tremendous experience with parts, but I WAS an English major!

Regards,

Steve

 

Thanks Steve!

 

Well, I made a list of all the possible suspects that could be wrong, or missing or worn to the degree of malfunction.

This week I will go over to the tranny shop and see if anything was left out, or worn that could cause the High to intermediate syncho ring not to engage all the way. a wrong part will be harder for me to tell.

I wish there was a used 3.03 3 speed locally I could get to compare. But have not found one. I am thinking that if this next inspection doesn't find anything- I will just order a complete rebuild kit and replace everything. The guy at the tranny shop says I can come in anytime and he will direct me in making sure everything comes apart goes together as it should and has given me my money back from where he rebuilt it 6 months ago.

I will keep you posted- in the meantime if you think of anything I should look for.....

 

Some 3.03 applications: 1963/64 Galaxie & Fairlane V8 / 1963/65 Falcon V8 / 1963/83 F100 / 1963/86 F250 / 1965/66 Mustang V8 / 1965/67 Econoline 240 I-6 / 1965/67 Fairlane.

1965/71 Galaxie/LTD / 1966/70 Falcon / 1966/77 Bronco / 1967/73 Mustang / 1968/71 Fairlane/Torino / 1969/87 Econoline / 1970/77 Maverick/Comet / 1975/80 Granada / 1975/86 F150.

 

OK I got my tranny back and trying to make sure I am not yanking this out in another 250 miles.

Hopefully someone here is an expert on these 2 speeds.

I double checked all the part 3's and they seem to be the right ones, and there didn't seem to be any missing.

Anyone with any suggestions or comments would be greatly appreciated



There is about 1/4" movement of the Synchro rings





Last Time ths was rebuilt, 250 miles ago, the syncro blocker ring for the intermedita & high gear got chewed up, and I could no longer down shift to second, it would just grind. I could down shift into 1st.

 

I have this transmission that a local Transmission shop who is very respected in the business, but evidently doesn’t have much manual experience, tried to rebuild and now there is too much space at the blocker rings so they come out of the dog ears and spin freely. There is about ¼’’ at each blocker ring for play. What was happening after he rebuilt it is when you down shift from 3rd it goes in hard into 2 second, and as you drive it, it starts to grind and by 250 miles you can’t even get from 3rd to second, it just grinds away. I can down shift from 3rd (while leaving the clutch in) to 1st then up into 2nd. Right now I have the input and output shafts in without the bottom gears or forks, in order to examine it and see it something is worn, missing or out of place. The local shop has replaced the input and output bearings, & the blocker rings- I replaced the dog ears and springs. I checked the bearing dimensions and they are correct for that tranny unless somewhere the tag was changed and it isn’t a HEFF.

To me a 52 YO wanna be mechanic, it seems either:
1) the hubs/gears have all worn just enough to give this extra slop
2) there is a spacer washer or something missing- I have the blowup of the tranny and this does not seem to be.
3) the blocker rings need to be wider with a deeper cut for the dog ears
4) longer dog ears (Haven’t completely been able to visualize whether this would actually be a solution)
5) it is the wrong hub & slider. The teeth and spline counts match up but I don’t have the dimensions of the length of the hub.
6) the obvious that we have completely over looked.

Please let me know if you have any ideas or advice. Prior to bringing it to be rebuilt, it shifted fine was loose, and sometimes would be hard getting into gear but didn’t grind.