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#4525292 - 09/24/17 10:11 PM hour meter clicking shortly after shutdown?
motor_oil_madman Online   content


Registered: 11/29/09
Posts: 4138
Loc: Houston, Texas
I have an hour meter on my boat that's the original one and is 25 years old. One thing I've noticed is it seems like it continues to log time for like 5-10 seconds or so after I turn the key off. I can hear it clicking, which I'm assuming it's working when it does that, but why does it continue running shortly after I turn the key off? Unless it is stopped and just does that normally since 5-10 seconds isn't enough time to see if it's actually moving.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4525314 - 09/24/17 10:36 PM Re: hour meter clicking shortly after shutdown? [Re: motor_oil_madman]
oilstudent24 Offline


Registered: 08/29/09
Posts: 375
Loc: USA
Is there still a supply of electricity flowing like when you turn off your computer speakers and a couple seconds later it makes a slight pop.

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#4525370 - 09/25/17 01:16 AM Re: hour meter clicking shortly after shutdown? [Re: motor_oil_madman]
03cvpi Offline


Registered: 03/04/07
Posts: 192
Loc: Minneapolis
Very normal if is an hourmeter just like old odometers with individual numbers on a wheel. Many used a small motor that wound up a spring clutch and that will take a second or two to wind down after power is removed. Some newer analog hourmeters had a capacitor before the motor to buffer inrush, this also takes a second or two to discharge. The newer LCD display models simply stop when power is lost.

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#4525478 - 09/25/17 07:33 AM Re: hour meter clicking shortly after shutdown? [Re: motor_oil_madman]
i_hate_autofraud Offline


Registered: 05/19/16
Posts: 494
Loc: Canada

On older Hour meters, 12V is used cycle a solenoid that partially winds a spring,
the timing is a clock mechanism, so it's just running out the spring.

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#4525483 - 09/25/17 07:45 AM Re: hour meter clicking shortly after shutdown? [Re: motor_oil_madman]
motor_oil_madman Online   content


Registered: 11/29/09
Posts: 4138
Loc: Houston, Texas
So is it still logging time For those last few seconds or not?
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4525485 - 09/25/17 07:46 AM Re: hour meter clicking shortly after shutdown? [Re: motor_oil_madman]
motor_oil_madman Online   content


Registered: 11/29/09
Posts: 4138
Loc: Houston, Texas
I guess the nice thing is you can easily check that it's still working.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4525688 - 09/25/17 11:23 AM Re: hour meter clicking shortly after shutdown? [Re: motor_oil_madman]
ShotGun429 Offline


Registered: 12/09/04
Posts: 406
Loc: Dayton,Ohio
yes, those wind down seconds are logged, not a big deal

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