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post #11 of 20 Old 15th July 2016, 01:47 PM
B767capt
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Originally Posted by georstan View Post
Didn't change the slave, technician didn't recommend it, he has rarely seen them fail, but at this point IDK, only had 1 error message today in heavy traffic, other than that everything else seems fine
They fail a lot and you can't tell by looking at them. Fluid starts to bypass the internal seal and the calibration can't be done after a clutch change. They have also been know to spray hyd fluid all over your new clutch and ruin it. Cheap 300.00 insurance IMO since it has rubber inside that deteriorates over time. It's a wearable part that only be changed when the transmission is out.

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post #12 of 20 Old 15th July 2016, 05:24 PM
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Originally Posted by dr_dirtg View Post
can you elaborate on this a little? is that an external leak? will you see the trany all wet in hydraulic fluid? or internal?


Hi

I'm not mechanically savvy but from what I understood it was internal and could not see fluid anywhere.


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post #13 of 20 Old 16th July 2016, 05:24 AM Thread Starter
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hmm.. i wonder how to check if there is an internal leak or not. what did your mechanics do to fix it?
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post #14 of 20 Old 16th July 2016, 05:37 AM
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Originally Posted by dr_dirtg View Post
hmm.. i wonder how to check if there is an internal leak or not. what did your mechanics do to fix it?


They hooked it up with the diagnostic, activated the pump and monitored the pressure which dropped abnormally quick on the SMG pump. It refused to hold pressure as a good working unit normally would.


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post #15 of 20 Old 18th July 2016, 05:32 AM Thread Starter
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Originally Posted by B767capt View Post
They fail a lot and you can't tell by looking at them. Fluid starts to bypass the internal seal and the calibration can't be done after a clutch change. They have also been know to spray hyd fluid all over your new clutch and ruin it. Cheap 300.00 insurance IMO since it has rubber inside that deteriorates over time. It's a wearable part that only be changed when the transmission is out.
This internal seal is that one of the orings that come with the new pump itself?
I am awaiting my new pump from ecs... hopefully my pressure dropping fast will be resolved with a new pump and seals/o rings.

I checked my pressure and it goes up to about 60bar but then goes down to about 45 within approx 2 min. I imagine this is a internal leak?
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post #16 of 20 Old 18th July 2016, 04:44 PM
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My faulty pump would hit 100bar then drop immediately every 5 seconds and hold at 40. The new one hits 100 bar or slightly more and takes a lot of time before dropping in pressure


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post #17 of 20 Old 19th July 2016, 02:44 AM Thread Starter
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This is exactlly what I wanted to hear - so my pump is definetely no good. Too bad ecs just told me to wait till aug 6 for them to get it.
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post #18 of 20 Old 19th July 2016, 04:25 AM
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Originally Posted by lyallf View Post
My faulty pump would hit 100bar then drop immediately every 5 seconds and hold at 40. The new one hits 100 bar or slightly more and takes a lot of time before dropping in pressure


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Interested where are you getting this info?

Normal pressure should be 75 bar, max is 90 bar for adaptions and such..

You can see this info in INPA.. From most cars i have seen, while engine running, the pressure drops slowly until around 50's bar where the pump starts up again to bring it back up to mid 70's again.

There is a function in DIS that you can check the hydraulic health of your unit.
SMG accumulator leak down test and SMG pump pressurization time test

Last edited by 5soko; 19th July 2016 at 04:25 AM.
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post #19 of 20 Old 19th July 2016, 07:00 AM
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Originally Posted by 5soko View Post
Interested where are you getting this info?

Normal pressure should be 75 bar, max is 90 bar for adaptions and such..

You can see this info in INPA.. From most cars i have seen, while engine running, the pressure drops slowly until around 50's bar where the pump starts up again to bring it back up to mid 70's again.

There is a function in DIS that you can check the hydraulic health of your unit.
SMG accumulator leak down test and SMG pump pressurization time test


Hi

Like I said I not at all mechanically handy so I'm just stating what I saw when my car was linked to a diagnostic touch screen and mechanic activated the pump and I heard it prime and could see the pressure figure and how it decreased on the screen.


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post #20 of 20 Old 19th July 2016, 12:33 PM
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Quote:
Originally Posted by lyallf View Post
Hi

Like I said I not at all mechanically handy so I'm just stating what I saw when my car was linked to a diagnostic touch screen and mechanic activated the pump and I heard it prime and could see the pressure figure and how it decreased on the screen.


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Gotcha, was just interested where you collected the data..
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