Home > Maintenance & Mods (L322) > torque convertor oil on a gearbox flush |
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viper Member Since: 11 Apr 2015 Location: manchester Posts: 271 |
was speaking to a guy who runs a auto gearbox repair garage today and was asking him about flushing machines. he said a gearbox flush over a simple drain and fill is pointless as the oil in the torque convertor still does not come out and that is usually 50% of the oil
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5th May 2015 7:59pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8189 |
The oil in the TC gets pumped round like the rest of it... it doesn't just take root there..... Pete
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5th May 2015 8:10pm |
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viper Member Since: 11 Apr 2015 Location: manchester Posts: 271 |
thanks for your reply , he was positive that 40% of the oil will stay trapped in the TC due to the small holes in the TC. He was rebuilding one while I was there, he said the flush would push oil through the transmission but so much is trapped in the TC the flush just passes over the holes and inlets , it made sense to me anyway.
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5th May 2015 8:22pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8189 |
You said in your first post that it doesn't come out.... well that's not true it will come out... he maybe correct on how long it takes, he may not be, I've never taken a FF one apart, god knows why they don't put a drain on it... be simple then...
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5th May 2015 8:28pm |
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viper Member Since: 11 Apr 2015 Location: manchester Posts: 271 |
thanks haylands, I guess he was half right and trying to justify why they don't have a flushing machine. as you said more comes out with a flush so maybe that's some from the TC, in truth I bet some stays in the TC
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5th May 2015 8:39pm |
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33CHINACARS Member Since: 14 Apr 2011 Location: Tyrendarra, Victoria, Australia Posts: 381 |
No sure its the same for a ZF box as my GM 5L40E. But I have just rebuilt my auto. First I drained the oil out. Got about 6 litres . Them I just let it sit for a few days with the drain plug out. Eventually got most of the oil out. Took awhile but then I had lots of time. |
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6th May 2015 2:01am |
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