Transmition Removal

[BMIC]

Tim, I don't have any history of the jeep so I have no idea of any recent attempts to rebuild the transmission. The only indication of any problem was the pronounced bang followed by a rattling sound I experienced a few weeks ago. Given the limited miles I had on the jeep (8 to 10) it is possible a few had been loose all along and the bang was one (of 7 that I found) that finally got caught in the gears.
I have asked the shop rebuilding it to give me his thoughts on where and why it failed and will pass on the info as I get it.
"Old Style Case" is interesting as the rebuilder mentioned that not all 3A transmissions flowed oil to the transfer case. Can anyone tell be the markings?

[Ryan_M]

the rebuilder mentioned that not all 3A transmissions flowed oil to the transfer case.

If nothing else it's encouraging that your rebuilder knows this. Sounds like you found the right guy for the job.

[athawk11]

the rebuilder mentioned that not all 3A transmissions flowed oil to the transfer case.

If nothing else it's encouraging that your rebuilder knows this. Sounds like you found the right guy for the job.

Agreed.  A very good sign.

I looked at my cases.  I don't know if this is a clue, but neither T-90 has the cast #4 or the Q (?)  Where this 4 and Q are, I have one small #2...concave, not raised lettering.

Both T-90 cases have the full date on the date tag.  12-4-50  and 5-10-48.  Yours has, what appears to be, just the month and date...no year.

The two TC cases I can look at:  Both have the C18-15-10 8 that you show, but one has raised letters, the other has concave letters.  Neither have the raised G.  The case with the concave numbers also has a concave S, but much lower on that same face.

I know, I haven't helped at all, but it's interesting none the less.   Just wanted to throw out the differences.  Maybe we can get a few more guys to chime in.

Tim

[Bob W]

What are the stamped assembly dates?

[athawk11]

Bob, On my two TC cases...tough call.  Pretty hard to see.  I think I'm seeing R8-5 on the case with concave part number.  On the case with raised part number...A7-9

BMIC, you might find this on the same face shown in your photo, but lower down under the part number.  It's a small tag that looks like the 10-30 tag on your T-90 case.

[Bob W]

R8-5 doesn't fit the expected pattern. A7-9 January 7, 1949.

[BMIC]

The only other markings I can find is the 9 25 cast in the attached picture. I do remember seeing some stamped numbers on top of the transmission under the shift tower plate. I'll get a picture this morning and see if that gives any further clue to the case style and age.

[BMIC]

I stopped at the shop that is working on my transmission this morning to see if there were anymore identifying numbers stamped or cast into the case. On the top of the case there are the letter/numbers L 62 3, that makes no sense to me but maybe to Bob W?
The shop is a one man operation and to the novice it looks like total confusion. Although Bob (owner) has not got into the transmission yet he said the problem was clear. On a recent rebuild not all the bearings were seated when the shaft was inserted and were at the bottom waiting to be picked up into the gears. After he wiggled the shaft and revealed the play that became obvious. I know Tim, Ryan, and others have highlighted that issue many times previous.
Interesting picture attached, my trans/TC on a bench between a Lotus head and a MGB block. I could walk around this shop all day....

[athawk11]

Really sounds like you've got this thing in the right hands.  Wish I could find a shop like this.

When inserting my output shaft, I used a ton of Vaseline to hold the roller bearings in place, but what seemed weird...while trying to insert the output shaft in to position, the end of the shaft seemed to have a magnetic quality.  It would occasionally bring the roller bearing back out with it while I was positioning the shaft.  Because of this, I lost a couple bearings to the bottom of the case.  I grabbed them, stuck them back in and loaded them with more Vaseline.  I can see how someone might have done this without noticing they lost a bearing or two.

Tim

[Bob W]

L 62 3

November 6, 1952

[1955CJ-5]

L 62 3

November 6, 1952

Explain please...

November is the 11th month

"L" is the 12th letter..

Did they not use the "I"?

The shop that did my engine was like that....chaos to anyone but the owner. I loved to just walk around and look at things....

[Bob W]

L 62 3

November 6, 1952

Explain please...

November is the 11th month

"L" is the 12th letter..

Did they not use the "I"?

Typically the letters I and O are not used in coding systems because they look too much like the numbers 1 and 0.

Excluding the letter "I" makes November the 11th letter. The next one or two digits is the day, 6th in this case. Then comes a single digit for the year. 2 could be 1952 or 1962. The last digit is still an unknown to me. Seems like it is always a low numeral.

[Ryan_M]

The last digit is still an unknown to me. Seems like it is always a low numeral.

Any chance it could be 1st, 2nd, or 3rd shift?

[Bob W]

That's certainly a possibility.

[BMIC]

Transmission rebuilt and installed. With the help of my son (it is a 2 man job) we installed the Trans/TFC and hooked back up the clutch, drive shafts, speedometer and e-brake. Sunday morning I drove it on the street for the first time to the local coffee shop to get the "professional opinion" of the local guys. Nothing carries more respect than an old Willy's Jeep.
Transmission felt great, worked great. A mental punch list of things to do: Steering has just a little too much play, Speedometer bouncing wildly, and replace fuel tank sending unit.  Timing and some carb adjusting.