transmission i.d.

I

IbRamblin

Member
I read all the threads in the trans section and the one from sss almost helped but the numbers didnt match what I got off my trans. Im sure these threads get started all the time and im sorry but heres another one.
I have a 72 with a 345
4 speed manual
reverse is right and down
I pulled these numbers off the side (driver side) of the trans

09.065.905
g/w.m.div

then there was this logo that was an "x" but the four corners were stretched out. It said:

borg warner
x
munci ??????

Something like that but the "x" is stretched horizontilly. The question marks...I dont know what it says
thanks guys I appreciate it. The trasns was diagnosed with bad synchros. If I pulled it out and took it to the shop they would fix it for 3 or 4 hundred. I could have it rebuilt for 1250. Or I could do it myself for the cost of the rebuild kit...couple hundred. What is the skill level required for this type of job? I have or can by the tools and im pretty handy. Alright, thanks again!
 
First, you need a IH service manual for your IH vehicle.

Second, if the engine / trans is original / not replaced; then, a line set ticket should tell you what trans you have...

"being handy" -- there is a lot of leeway in that "definition" -- from replacing a faucet washer / hanging wall paper to rebuilding an automotive engine and having it last 100,000 miles.

You will probably need some "specialized" tools -- snap ring pliers and ??? The manual

afaik, the gears / sychronizers on the mainshaft need to be removed and put back with a press. Maybe I am just remembering a "locked" 4 speed where the mainshaft got "tweaked" enough that the gears could not be pressed off (at least my mechanc was not willing to risk the "schrapnel" flying around his shop). Check the manual...

To me, the most difficult part would be replacing the needle bearings on the countershaft.

I have not rebuilt a transmission before, but I have watched a couple being put back together many years ago.

The other issue is: attention to detail...

Having 1 or 2 pieces left on the workbench is not a "success"...

I do not know that many certified mechanics that can (will be allowed to) rebuild transmissions -- most places send them out to a transmission shop... Where that is all they do.
 
I have the manual. Of course they always make it look like a piece of cake. I know its gonna be harder than those pictures make it look. I think im gonna give it a shot; maybe with a doner trans first so I dont ruin my original. Being a difficult job to do right makes sense since the do send the trans out to trans shops. Thanks for that point. The trans in question is still in my Scout II so further id would probably require removal. Scoutparts.com sells a rebuild kit for a couple hundred. I think im gonna go for it. Ill keep you guys posted. Thanks
 
ibramblin said:
I have the manual. Of course they always make it look like a piece of cake. I know its gonna be harder than those pictures make it look. I think im gonna give it a shot; maybe with a doner trans first so I dont ruin my original. Being a difficult job to do right makes sense since the do send the trans out to trans shops. Thanks for that point. The trans in question is still in my Scout II so further id would probably require removal. Scoutparts.com sells a rebuild kit for a couple hundred. I think im gonna go for it. Ill keep you guys posted. Thanks
Click to expand...

Rebuild kits for these transmissions are a dime a dozen from many sources!!! And rebuild kits are packaged in several different levels at prices all over the spectrum...that is called buyer beware. There were one hell of a lot more of 'em used in forklifts than any IH application.

In the future, please refrain from mentioning the vendor which you made reference to, that is not a cool thing to do when you are asking for technical assistance on this forum which is provided as a customer service for ihon customers.
 
Uhhh, not sure what you are doing...

You stated that your trans was diagnosed with "bad synchros"?

Does that really mean the synchros are bad (there are two -- one for 1-2 and one for 3-4.)?

Or, does it mean that the "blocker rings" for the synchros are bad -- broken / worn out?

I guess I should add that you will not know that until you take it apart...

The "blocker rings" are brass (or something close) and have "teeth" that "mesh" with the synchronizer. You should be able to tell if the teeth are worn by looking at them. You can test if they are cracked by "dropping" them (from an inch or two) on to a piece of flat steel ("flat pad" on a large bench vise will work). If the "blocker ring" is good, it will "ring". If it is cracked, it will sound "flat" (light "clunk"). You May have to repeat the drop a couple times to get a feel for it.

In any case, "standard" rebuild kits only contain bearings, lock rings, spacers and seals -- no synchros, no blocker rings, no gears...

As michael maybe stated, there are many rebuild kits...
 
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Thanks for the help guys. I bought a rebuilt trans that I will be putting in some time this week. I will look into getting the "right" rebuild kit and work on rebuilding my own trans to get the experience. Thanks again to all that helped
 
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