muncheese

What is the Cap, that leads from the return line, for the transmission? Do i Flush from there or fill from there or what...?

jetpuck73

I am pretty sure that is for your A/C.

gDMJoe

CONFIRMING ... that is an A/C line.
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SUPERLOOP

Yep, that's the liquid A/C line coming from the condenser. The transmission cooler lines should be underneath the truck.

muncheese

ok, but i looked for the lines and i see them underneath near the front passenger side, but there is no disconnect where i can flush the return line. where is it?

Melbeachmoose20

It was my understanding that when someone flushes the transmission lines and sump, they disconnect it at the cooler and start the engine. I'm not sure how it works but one of the lines then pumps out old fluid and you put the other line in a bucket full of new fluid and it draws it in, letting the engine do all the work.

I recommend you look at this thread by [MENTION=90306]Especial86[/MENTION], and do what he says by dropping the pan and installing a drain plug and doing a few fluid exchanges.

https://www.f150forum.com/f4/transmi...h-pics-206146/

muncheese

Thank you for the idea of two buckets one with fresh the other for old. i also know that it should pump out 1 quart every 15 seconds or there could be a clog.