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Engine pulley - unused?


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4 replies to this topic

#1 OFFLINE   djc

djc

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  • My C-MAX's Year:2013
  • Current Vehicle:C-max SE

Posted 23 April 2018 - 08:59 AM

When I was swapping summer for winter tires and wheels last week I saw a gear and pulley at the end of the C-max engine.  The gear appeared to have a sensor mounted below it - I am guessing it does ignition timing.  It does seem odd that this was exposed, not covered.  And mounted on the gear was a pulley, but I could find no belt.  Hallucination?  Power take-off for a wood-chipper? Sign this engine is used in other applications?









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#2 OFFLINE   cr08

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Posted 23 April 2018 - 10:14 AM

Basically it is used at what is commonly referred to as a 'Harmonic Balancer'. More or less a dead weight that helps smoothen normal vibrations that come with an I4 engine. Normally this would be combined or be in addition to the crankshaft pulley to power other belt driven accessories. But with our cars all those accessories are electric so nothing that needs to be belt driven. But that harmonic balancer still needs to be there. The gear and sensor are also very likely the crankshaft position sensor as you inferred.


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#3 OFFLINE   stolenmoment

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Posted 23 April 2018 - 10:45 AM

In other words, a flywheel.



#4 OFFLINE   djc

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Posted 23 April 2018 - 11:37 AM

Thanks for info.  I didn't think of that - it didn't look heavy enough to do useful balancing work. 



#5 OFFLINE   jdbob

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Posted 23 April 2018 - 03:43 PM

According to ALLDATA it's called a "Harmonic Balancer - Crankshaft Pulley". The actual flywheel is on the other end of the crankshaft, the end that goes into the transmission.


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