727 question

JohnnyC

JohnnyC

Member
I purchased a 77 Scout II with a 304/727/20/44f&r combo a while back. The guy who I purchased it from said that the Scout has not ran for a few years and tranny didn't work. When I got the Scout home and got the engine running I noticed that the transfer case was stuck in nuetral and I couldnt budge it out of the gear. I dropped the tranny and put it to the side. I purchased another used tranny and thats what ive been using since. The question I have is how do I tell if the tranny is good? I managed to hammer the shifting rod on the transfer case in to gear (it actually only took a couple light wacks with the rubber mallet), and I cycled through the tranny gears and all of them seemed to work in the correct shifting position. I also dropped the pan (which I noticed the dork sealed with rtv), and besides the tranny fluid being a little darker than normal, it was completely clean. What is/are ways to find out if the trannys good?

Thanks john
 
If ya don't have access to an automatic transmission dyno, then the only way to determine if it's serviceable is to install it and try it out!

When you move the shift lever on the trans, all you are doing is moving a hydraulic spool valve in and out through various positions. The only "mechanical" thing that happens, is that the park rod engages or disengages the parking ratchet on the peripheral of the governor body.

Going through the band adjustment process which you find stickeed at the top of this sub-forum is always a good idea, the amount of slack you find in the bands during adjustment gives an idea as to the service life of the friction material on the bands.

And get all traces of rtv out of the transmission!!
 
That's what I figured. Ok, I'll check out the bands as soon as I get home. I'm gonna try to call a couple of tranny shops and see where there might be a tranny dyno. Thank for the help
 
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