Transmission case repair

F

Fast31

Member
I had a 1931 gearbox housing with a worn down cluster gear boss. I made a grinding/lapping tool to grind the surface flat and smooth again. I ground the boss back to accept a 1928 thrust washer. Henry skipped those and made the bosses taller at the end of 1928 to cut on cost. Luckily these washers are still available. I worked to get a cluster gear end play of .005” - .017” as per Van Pelt’s Transmission Book. I glued sand paper onto the lapping tool, one on each side, started with 60 grid, followed by 80 and finished with 120. I made a little video to show the details. Check my channel 29FastFord or the link below.

https://youtu.be/dLPqmao-GlM
 

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Interesting, where does one find the measuring tools that are needed for so many things when working on a car? I have some that I found on ebay but generally I don't know what the tool is called, like his inside caliper set. Jackdumb
 
jhowes said:
Interesting, where does one find the measuring tools that are needed for so many things when working on a car? I have some that I found on ebay but generally I don't know what the tool is called, like his inside caliper set. Jackdumb
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Telescoping gauge kit. We have several tool webshops in The Netherlands. I regularly scroll through these webshops, just to look what’s available.
 
So happy to see your post and video. I'm a real fan of doing it yourself. Your solution shows how a little ingenuity and the job can be done without a machine shop. I did something similar on my case. Your solution is far more elegant than mine was. Great post.
 
Fast31,
I'm surely AMAZED by your skills & ingenuity! GREAT Camera skills, also!
Can't even imagine how many hours it took???
Bill W.
 
BILL WILLIAMSON said:
Fast31,
I'm surely AMAZED by your skills & ingenuity! GREAT Camera skills, also!
Can't even imagine how many hours it took???
Bill W.
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Bill, it took me one evening to machine the shaft, lapping disk and the 2 bearings. The cast iron grinds away pretty easy, but so does the sandpaper. So I had to cut off and glue on sandpaper several times. Waiting for the glue to cure took the longest time (and patience).

For me a large part of the Model A hobby is to find or to think up, design and build special tools to do the job right.
 
Fast31 said:
Bill, it took me one evening to machine the shaft, lapping disk and the 2 bearings. The cast iron grinds away pretty easy, but so does the sandpaper. So I had to cut off and glue on sandpaper several times. Waiting for the glue to cure took the longest time (and patience).

For me a large part of the Model A hobby is to find or to think up, design and build special tools to do the job right.
Click to expand...
Fast31,
You're a DEDICATED Man, keep it up!
Find Markus Maurers' website in Zurich, Switzerland, he's made up MANY special tools & fixtures, while restoring his Grandfathers' '29, extended wheelbase, flatbed "A", with a special cab, built by some well known builder there.---There's HOURS & HOURS of GREAT info on his site. The Dog & I communicate with him, OFTEN. He posts GREAT step by step photos of his 14 Year restoration, including very PRECISE INFO/DRAWINGS/DIMENSIONS/ETC, of all the tools & fixtures he builds! Markus should get an "AWARD" for his camera skills, at least.
Bill W.
 
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