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Hynautic engine control system drain

 
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Majorminer



Joined: 12 May 2010
Posts: 2

PostPosted: Wed May 12, 2010 9:47 am    Post subject: Hynautic engine control system drain Reply with quote

I need to drain my entire engine control system, I believe my fluid is contaminated, Steering fluid was used to top off the resevoir vs Ethylene Glycol. The system is working fine but it is way past due for service.
Can't find more ethylene Glycol, all anyone seems to have is Propylene Glycol. So to change it out the whole system needs to be drained.
Will just opening the drain on the resevoir drain everything? Would not seem that the lines would be purged of old fluid.
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MikeW
Senior Member


Joined: 01 May 2006
Posts: 680

PostPosted: Wed May 19, 2010 6:41 am    Post subject: Reply with quote

Hello, drain the reservoir, fill with Propylene Glycol and pressurize the system. You will need to bleed the system at the engine and transmission until you get fresh Glycol at the actuators. Cool
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Majorminer



Joined: 12 May 2010
Posts: 2

PostPosted: Wed May 19, 2010 10:10 pm    Post subject: hynautic engine controls Reply with quote

Thanks, I drained it, took the resevoir all apart, found a large amount of jelly substance in the bottom plugging the sight tube and filter. Cleaned it all out, replaced with appropriate fluid and all is good.
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