I stumbled across this on that auction site. I is expensive, but rare.
https://www.ebay.com/itm/40-52-Ford-truck-pickup-122-4-11-ring-and-pinion-set-NOS-F-2-F-3-1ton/143011019940?hash=item214c1efca4:g:jUEAAOSwCVtb6cZ 8

 

 

Thanks for fixing the link. I think the part number checks out. The 38-39 part numbers are 81Y, the first digit of the prefix is the last digit of the year the part was first used. 81Y dates 1938 introduction, 01Y dates 1940 introduction. I found an old thread where we discussed these part numbers.

 

 

I just pulled the joke off a spare F-2 axle earlier this week and it was tapered and keyed. I found the auction after I got new gears (figures). If the auction goes too high it will still be less expensive to get new gears...

 

 

Pic from 1948/56 catalog: 01Y-4209-A = 1948/52 D (F2), Y (F3), J (F3 Parcel Delivery).

01Y is a 1940 truck part number prefix, but 01Y-4209-A isn't listed in the "Green Bible" (1928/47 Truck & 1928/48 Ford Passenger Car Chassis Parts Catalog).

 

I stumbled on these gears while looking for 6.66 gears for these axles. A good friend of mine is repairing an angle drive on a mid 70s Jeep with a post hole digger. The gears in the angle drive appear to be based on the Timken ring and pinion. We pulled the 4.86 gears out of my spare axle. However my friend would prefer a lower ratio, preferably 6.66. The 6.66 gears were used pre-war in 60 hp and 4 cylinder trucks. I was trying to find the low ratio gears when I found the other end of the gear ratio options.

 

All of the originals were tapered and keyed, so as Bob states in his auction, this is a correct gear set for 1940-52. My new sets have a splined pinion, and my ring gears are drilled and tapped so they just bolt on. You would have to rivet the NOS ring gear on your carrier.
Chuck

 

I have the 01Y 4209A listed in my November '54 catalog for 48-52 D,J,Y applications, but not in the 48-52 catalog.

 

 

This parts catalog is bound paper with green covers, hence the nickname "Green Bible" coined by enthusiasts.

Ford also offered a loose leaf paper version, which is what I have, it's placed in a later red Ford truck 3 ring binder.

The pages have turned brown with age and my catalog is missing the first 24 pages. I got it from Pasadena Ford when they closed in August 2008.

Originally, there were individual year bound catalogs for Ford trucks (1928/47) and cars (1928/48). Later, probably in the 1950's, Ford replaced them all with the bible.

 

 

Ah yes, changing loose leaf pages in parts catalogs, I did this 100's of times.

Ford would send out the new individual pages, then the parts catalogs in binders had to be taken completely apart to insert the pages, a royal PITA!

When Ford introduced microfiche in 1967, the viewer was a POS! The resolution was terrible and when you moved the slide from one page to another, the POS had to be refocused.

One day, the parts manager at Ralph Williams Ford attempted to use it, after a few minutes, he was so PO'd that he picked it up, walked out the door and threw it into the dipsy dumpster!

Ford introduced a new viewer in the 1980's, it was a marked improvement over the huge POS original...as you can see...

 

I'm not sure if it's true or not, but I was told that Ford had a proprietary magnification in their fiche and their cards would only work in the special Ford viewer. I have an old viewer and stacks of PPG paint formula fiche I used for years. I kept it thinking I could also use it with Ford parts fiche, but was told it wouldn't work, so I never pursued it. Do you know if this is correct?