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Engine Discussion of preventative/corrective maintenance and other technical issues regarding your coach's engine.

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  #1  
Old 12-22-2019
Bruce Bruce is offline
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Default Hydraulic fan

I belong to a few Monaco forums. One of them has a document in their files entitled: Hydraulic fan drive system. I downloaded it and it is a Bluebird factory file. Lost of explanations on how they work and diagnosis. I can ask one of the forum owners if I can share it. But first I want to make sure it is not here already. I am also not sure how to post the document.
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Old 12-22-2019
badandy badandy is offline
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http://www.wanderlodgeownersgroup.co...e%20Manual.pdf ?
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Old 12-22-2019
badandy badandy is offline
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Just post it here - I have dug up everything I could find on here on the LXI fan system.
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Old 12-22-2019
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https://www.youtube.com/watch?v=cKYu4Fg_6Qo
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Old 12-22-2019
badandy badandy is offline
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Wax valve, seems like going backwards.
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Old 12-22-2019
badandy badandy is offline
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And a needle valve because the wax valve won't pull enough air through the cac and a/c condenser? Is the wife going to ride back there and run the screw down when they want a/c? I don't get it, what is the point to this? He could have wired a 12v hydraulic valve into that pilot circuit to just turn the fan max on/off and not have any of these problems.

https://www.surpluscenter.com/Brands...-9-5112-NC.axd

$65 + $10 in adapter fittings.
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Old 12-23-2019
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Randy Dupree Randy Dupree is offline
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The PWM control valve has a 12vdc solenoid on it,which you could just put a simple switch on to turn it on and off.
If you delete the PWM thingie..
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Old 12-23-2019
badandy badandy is offline
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Quote:
Originally Posted by Randy Dupree View Post
The PWM control valve has a 12vdc solenoid on it,which you could just put a simple switch on to turn it on and off.
If you delete the PWM thingie..
Yeah there's that, I was just assuming it didn't work. Throw some Dicor on it for good measure.
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Old 12-23-2019
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Not that this applies directly to the conversation, I thought to mention it to show a different perspective for the wax valve. We use these on reach stackers to control a variable displacement pump. By changing the stroke we increase and decrease fan speed along with engine rpm. All mechanical and very reliable.
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Old 12-23-2019
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Randy Dupree Randy Dupree is offline
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Quote:
Originally Posted by Dave&Beth View Post
Not that this applies directly to the conversation, I thought to mention it to show a different perspective for the wax valve. We use these on reach stackers to control a variable displacement pump. By changing the stroke we increase and decrease fan speed along with engine rpm. All mechanical and very reliable.
Good info Dave,i knew this stuff was on machinery,it had to be.
Tell us more?
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