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[T3] AT how-to?
OK, I'm buffalo'd here.
Wanting to run a Level-1 Diagnostic on an auto trans, as per procedures in
Bentley.
But Bentley's verbage leaves me with quite a few unanswered questions.
Can anyone who's done this offer a real-world explanation of the whole
vac-pressure testing operation? Alternate methods that have worked for you?
How should these hoses be connected to the test outlets? Are there special
fittings I oughta be looking for, to avoid damaging the connections in the
tranny case? Should I be concerned about the pressure ratings of the hoses
I'm using? And what sort of guages should I be looking for?
Also, there's talk of taking pressure readings & making adjustments with the
main vacuum hose disconnected... and then, later, taking the readings again
under driving conditions, with the hose hooked up. Am I correct in thinking
that readings with the hose off are meant to establish a baseline, because
the setup mimics a "nil" signal from the engine?
And if all this pressure testing reveals that something in the valve body is
shot, would I be better off trying to hunt down & replace the actual broken
bit? Or just getting a whole new unit? Do new/reconditioned AT valve bodies
even exist? The book makes it look like the valve body is 100%
serviceable... by someone with way more experience and a better-outfitted
garage than I have.
Please advise. Thanks.
--timmy
'72 square (4 on the floor, no worries)
'69 square (wife HAD to have the *#$@%* automatic!)
Jax, FL
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