Hi,
Just wondering how I can align the reaction shaft to the front pump body without special tools ?
Working on a mid 70's 727 . Jim

i cut up an old converter and made my own alignment tools.
other than that, it's just the "poke the converter into/on the shaft and spin it around until it fully seats" deal ?
sorry i can't offer more.

Bob, Ok Thanks ,
I will drop both the pump body an R,shaft onto the convertor and spin it and slowly tighten the 6 bolts I have the seal in place so I'm guessing that will help center it .

You don’t need the converter.

The 727 pump housing has a countersink in it to accept and pilot the reaction shaft support.

Do NOT use the converter bolts to help pull the converter into the pump You will be sorry when it cracks the drive tangs and later fails while your driving it
If you use the pump out of the trans to align the gear and rotor it may, will, move while installing it back into the trans
I learned a long time ago to install the converter with the trans out of the car with the trans input shaft pointed straight up and align the drive tangs either at 12 and 6 o clock or at 9 and 3 o clock and try and center it, the pump drive gear equally in the pump drive rotor so you can align the drive grooves in the converter hub the same way and then lowered it into the front pump and slightly turn the converter a little at a time both ways until it drops down the first time and then again, without pulling it up out of the first engagement, slowly turn it again until it drops all the way in
In the car it is a lot harder to hold the converter centered on the input shaft and make it align perfectly on the shaft, it can be done but it is way easier out of the car
I've install converters in the other brand trannies a lot easier than any 904 or 727, Ma Mopar screwed the pooch on this design
Good luck

Like I said earlier, you don’t need special tools or the converter. You must be thinking of the 904/998/999 transmissions that need the large band to align the pump housing and the support. W/o that tool most guys just slide the pump and support in to an empty case then tighten the bolts.

Transman , Thanks for your answer
I know there is a step cut in the pump body for the reaction shaft to locate, but on mine its not a tight fit and there is wiggle room. maybe just being to critical.

Is this what you are looking for? https://www.tsr-racing.com/chrysler-a727/tools-52.html

There will be some discernible movement, maybe a thou or less...it's not supposed to be a snap fit.

You are correct about the wiggle room but the bolts once in place should minimize that.

As many times as I was in the the transmission plant I never saw any tooling used to do this. We never used anything either in the Reman plants. Never had any issues.

this is how my dad does it. he has several of these that he acquired over the years. he said that they were on new and reman trans.

These were designed to serve two purposes only - for production. They serve the same purposes in the field.

Dust shield for storage and transportation and to align the inner pump rotors in the vehicle assembly plant.

You will notice two wings that align with the slots in the plug. In the plant they orient those wings to match the converter slots.
Back in the day the converter was shipped on the engine. They oriented the such that the trans and the engine could end married.