Extra lock ring in 4R70W case...
I disassembled a 2003 4R70W for rebuild today and when I pulled the output shaft and ring gear a large diameter lock ring came out with it. Or should I say, fell out when I pulled the shaft/ring gear assembly. This ring is approx 5/32 wide and 1/16 thick and of suitable diameter to have snapped into a grove in the case...except there isn't any grove back there in the case. There is also evidence of the ring having been positioned between the ring gear and the case...as though it had been installed there during assemble...and it has been very lightly rubbing on the ring gear.
I know some AOD's had an extra lock ring back in the ring gear area but I don't know about the 4R70W. Any ideas, suggestions, or experience greatly appreciated. BB |
You did not say what model vehicle, I am not sure if there would be any small changed in the trans vehicle by vehicle.
I googled 4R70W and one of the vehicles listed as containing it was a crown vic, so here is part of disassembly for a crown Victoria. If you list what vehicle you have I can post those instructions on the off chance they are different.
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Here some installation instructions. Once again 2003 crown victoria since you didnt say what vehicle it was from.
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Thank you Scott
I was going to post this evening that I was able to find out the answers I sought. However, This info is very good and, again, I thank you. I've done a couple of AOD's but this is my first 4R70W which came from an '03 Mustang 3.8 and is replacing the AOD in my '66 Mustang. I did discover a problem that me necessitate me using a different case. The forward bearing on the output shaft, behind the the planitary ring gear, is supposed to be pressed into the case but mine came out with the shaft....not good. If the case can't be saved I will disassemble another trans that I have and hope that one is useable.
Anyway, I really appreciate your efforts and I plan to print out this info for my re-assembly. BB |
reverse band support ring
Originally Posted by Bullet Bob
(Post 119930)
I disassembled a 2003 4R70W for rebuild today and when I pulled the output shaft and ring gear a large diameter lock ring came out with it. Or should I say, fell out when I pulled the shaft/ring gear assembly. This ring is approx 5/32 wide and 1/16 thick and of suitable diameter to have snapped into a grove in the case...except there isn't any grove back there in the case. There is also evidence of the ring having been positioned between the ring gear and the case...as though it had been installed there during assemble...and it has been very lightly rubbing on the ring gear.
I know some AOD's had an extra lock ring back in the ring gear area but I don't know about the 4R70W. Any ideas, suggestions, or experience greatly appreciated. BB |
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