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Old 13-10-2016, 17:06   #46
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Re: Hour Meters Have Stopped Working on Both 4JH4AE Yanmar Displays

Thanks boatbod for your input - my question at post #39 was trying to find out if newer tachometers have had this problem sorted, or will I just be putting back same version which will fail with same fault after X time?

Anyone had experience with newer version of Yanmar tachometer ?




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Old 13-10-2016, 20:49   #47
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Re: Hour Meters Have Stopped Working on Both 4JH4AE Yanmar Displays

Replacement tachs seem to behave about the same as the old ones. Newer engines have different panels with a completely different electronic tach. Unfortunately it's not directly compatible.
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Old 16-10-2016, 02:26   #48
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Re: Hour Meters Have Stopped Working on Both 4JH4AE Yanmar Displays

We also have an 4JH4AE and the hour meter stopped working. The trick with cleaning the small flat cable did not help. We have also changed alternators to Balmar with serpentine belts and the Tachometer readings are wrong. (showing 3000 rpm when its really 2300 rpm). So now i am replacing the tachometer with VDO A2C59512390.
Its programmeble so readings will be right and it just seems a bit more modern with more functions.

Will post with the result, about two weeks from now.
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Old 16-10-2016, 22:50   #49
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Re: Hour Meters Have Stopped Working on Both 4JH4AE Yanmar Displays

Please do post your results, I am considering doing the same as you offpist.
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Old 30-10-2016, 15:38   #50
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Re: Hour Meters Have Stopped Working on Both 4JH4AE Yanmar Displays

Today I installed the VDO A2C59512390.
30 minute job, really easy and works well.
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Old 30-10-2016, 15:42   #51
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Re: Hour Meters Have Stopped Working on Both 4JH4AE Yanmar Displays

Thanks offpist, that is very encouraging. Any guidance on potential pitfalls or that might make the installation easier?
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Old 31-10-2016, 02:17   #52
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Re: Hour Meters Have Stopped Working on Both 4JH4AE Yanmar Displays

When you order, make sure its complete with the two connectors and two push buttons.
Fitment thru the panel hole is perfect so no need to adapt anything. The two push buttons are for changing settings and you need to make two 12 mm holes for them.
After that you connect all the wires, just follow the schematics. Instead of cutting the original wires i made an "adapter" wire so installment can easely be reversed.

Last you set the clock and pulses. Mine is correct at 131 pulses but my setup is very custom so yours might be different.

Some benifits over original:
-Can be adjusted for any alternator/belt setup.
-3000 rpm suits 4JHAE better than 5000 rpm.
-LED red light, adjusteble in 10 step brightnes.
-Reseteble trip hour counter.
-Alarm output.
-Built in clock and volt meter (but wont use that much).
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