727 rebuild at home

[oldbee]

I made a 727 front clutch spring compressor tool from scraps I had laying around the shop. In the background is a Snap-On snap ring pliers. Expensive, but the phrase buy once, cry once definitely applies...

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That’s what I did way back when. Same pliers, probably never use them myself again.

 

[Geoff 2]

The benefit of the aftermarket book: has tips in it to make the job easier, plus 'tricks' that have been learned over time that can add durability/performance to the trans. These are NOT in the FSM.

 

[dvw]

I

Air checking doesn't make them work any better. It's just a test before it's in the car.

I quit air checking after the first few.

Front clutch on 727 I just lube them well, you can move the piston side to side while a slight push down and they go in easy enough. Clamps seem like a bad idea.

Been doing these 45 years. An old seal will push in by hand. I could count the number of new seals that pushed in on one hand. I used to freeze them with a zip tie around the seal. The clamp method works better. One turn at time on each clamp. As for air checking? It only takes one piston or sealing ring that doesnt seat right and a trans that gets put in the car to change that thinking. I mean it does take all of about 30 seconds if you have a hole in the bench before anything is reasembled in the case.
Doug