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What is "sonnax"?

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Old 01-11-2015, 04:40 PM
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Default What is "sonnax"?
I was informed i should do a "sonnax" upgraded main pressure valve to avoid transmission troubles in the future?
I have not been able to find more information about this...
Thanks for the advice in advance.
 
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Old 01-11-2015, 04:46 PM
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Sonnax is a company that makes transmission rebuild kits and other transmission related things.

Transmission - Sonnax
 
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Old 01-12-2015, 10:59 AM
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This is to avoid issues with the A-drum breaking due to uncommanded pressure spikes. There is an updated pressure regulator valve that replaces the original and fixes the issue.

A search for "ZF5HP24 A drum failure" should get you more info, as well as this PDF...

http://jagrepair.com/images/AutoRepa...0ZF5HP24-1.pdf
 
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