Checking transmission operating pressures 87 S4 4spd auto
#1
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Checking transmission operating pressures 87 S4 4spd auto
When you remove the fittings and screw the test gauges into the various test ports on the side of the transmission case will fluid come out or is there some sort of check valve with a certain cracking pressure (ie. higher than ambient) that will open when the primary pump is operating/turning?
thanks.
anyone BTDT??
thanks.
anyone BTDT??
#2
Nordschleife Master
Tony,
I found when I removed the bolt of the test port only a dribble came out from a car that was sitting from the overnight. After I ran the test and detached, it ran out more briskly. Also I was doing the test on a failed dead transmission. My operating pressure was 50 % of what it should have been.
Craig
I found when I removed the bolt of the test port only a dribble came out from a car that was sitting from the overnight. After I ran the test and detached, it ran out more briskly. Also I was doing the test on a failed dead transmission. My operating pressure was 50 % of what it should have been.
Craig
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thanks. I have a transmission pressure tester that i ordered on line..it has a bunch of different fittings to go on the end. Did you find anything out of the ordinary as far as thread size etc. Its obviously a very common MB transmission so i would assume this tester has the correct fittings with it.
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http://www.arizonatools.com/fluid-pr...ail/STATU4APB/
#9
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thanks. I have a transmission pressure tester that i ordered on line..it has a bunch of different fittings to go on the end. Did you find anything out of the ordinary as far as thread size etc. Its obviously a very common MB transmission so i would assume this tester has the correct fittings with it.
Bertrand, I had bought the exact one Mike had posted above. Worked like a charm in my old failed transmission. Worked well on my refrigerator too. I like the two scales the gauges can measure to. The numerous fittings it comes with will work on all we would come up with.
#11
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The fittings are 10 x 1.0mm, in the transmission case. It appears like those are included in that kit, from what I can see.
The passages do not have check valves, but leakage is minimal, Tony.
#12
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Mine is similar to this...cant find the exact link for it though.
http://www.arizonatools.com/fluid-pr...ail/STATU4APB/
http://www.arizonatools.com/fluid-pr...ail/STATU4APB/
That should work quite nicely, too. You actually do not need to "read" more than one pressure at the same time, anyway.
Couple notes above^^^^^, for you.
#13
Vegas, Baby!
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Tony, did you buy the tranny from my wrecked S4?
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Will this work?
Found this at HF:
It reads as only an oil pressure tester; does that matter? It's got the M10 X 1 male fitting.
It reads as only an oil pressure tester; does that matter? It's got the M10 X 1 male fitting.