1948 CJ2A

You guys can check here that it runs silently 

Thank You all for your words of encouragement. After starting the engine we hit a road block - one of the seals had probably hardened and we got a leak in the engine 

So this is the cup bit that leaked. I don't know the name of this part. The seal had probably become hard because it was not used. There were no leaks from the engine before and this was one part that was not inspected and redone. 

The reason it may be a blessing in disguise is because we discovered rust 

So this had to be cleaned. The images below after removing the rust

We also got the seals 

Thank you for the link to your CJ2A Richie. Looks like it is in good hands.

cheers

Bill

The Seals are in !! 

 Next thing to tackle was the Flywheel 

Some of the teeth showing their life - I thought we would have to find a new one but the mechanic had an ingenious solution 

Wrap the flywheel 

Light it on Fire to heat it after marking it 

Clean it quickly after removing it 

Fit it back 

Rotate the wheel 90 degrees and stop 

I think heating the ring gear to expand it and dropping it on to let it cool to a press fit was a typical way to install ring gears originally as well.  I'd guess it was done off-line, with the assembled flywheel /ring gear being brought to the assembly line as a single part rather than dealing with hot parts needing to cool on an assembly line.

An interesting related story.  When my sons were in Boy Scouts we took a tour of a railroad museum.  They had a "Big Boy", one of the largest steam locomotives ever made (making it one of the largest locomotives ever made, since the diesel-electrics are a lot smaller than their older brothers).  The museum had a film about the making of the Big Boy.  The drivers (the main drive wheels) were about 5 1/2 feet in diameter and had a steel "tire", a steel band that was separate from the wheel, so it could be replaced when it wore out.  The "tire" was installed this same way, heating it up to slip it on and letting it cool.  But they said that the "tire" was about 4 inches too small to fit over the wheel before it was heated up.  They were expanding it that much to install it!

(Anyone driving west on I-80 through Omaha can look up on the hill to the north side of the freeway, just after crossing the Missouri River and see a Big Boy on display in a park, along with one of the largest diesel-electric locomotives.)