2 differant 727's

reuben

reuben

Member
And still no reverse. I am not sure what is going on but it is really starting to piss me off. I could have sworn that when I put the 2nd one in I watch the bull gear go in both directions before I put the t-case and everything on. After I got it all buttoned up there was nothing, no forward or reverse. I am ready to burn this thing to the ground.
 
While trying to find the problem, I un-hooked my cooler lines and fired up the Scout. There was nothing coming out of the ports, now I am thinking it is a tc problem.
 
#1 cause for this condition,....when the torque converter was installed over the input shaft and the reaction shaft support, the pump drive tangs were not aligned with the slots on the converter snout. That in turn broke off the tangs on the pump rotor, resulting in an inop oil pump...no pump, no go.

The inner rotor of the oil pump gear set will have to be replaced, that involves removing the pump from the case.

Check this thread beginning at post #117:

http://www.forums.IHPartsAmerica.com/transmission-tech/588-torqueflite-727-guapo-3.html
 
Ok, tomorrow I will be installing yet another spare tranny and tc. I know why it broke, my own stupidity. I changed the tranny with out removing the tc from the flexplate. I thought it would work, I thought I had it all lined up. But I was wrong. My bad
 
reuben said:
ok, tomorrow I will be installing yet another spare tranny and tc. I know why it broke, my own stupidity. I changed the tranny with out removing the tc from the flexplate. I thought it would work, I thought I had it all lined up. But I was wrong. My bad
Click to expand...

My service manager/mentor in the chrysler dealership where I worked during college (young and stoopid years) taught me the art of building tf727 trannys, circa 1969. After about the third successful build I thought I knew everything about the boxes including how to beat flat rate by leaving the tc connected to the flex plate on some dodge or plymouth. Mentor had warned me to never try that approach...so of course I ignored him in order to try and make a few extra bucks. Ended up costing me about a week's pay for the damage I created and the lost time (I was working on 50% commission, iirc, chrysler flat rate for our dealership was $12 an hour).
 
All back together, the right way. I have foward and reverse, I am glad I did not shear the ears off the pump again, this was my last spare. I guess taking the shortcut of not removing the tc the first time was not really a shortcut afterall.
 
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