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Old 29-09-2018, 07:26   #16
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Re: Yanmar 4JH4E and Balmar alternator fit woes

Yes, an alternator is an AC generator, it outputs AC power that is rectified to pulsating DC by diodes.
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Old 29-09-2018, 18:57   #17
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Re: Yanmar 4JH4E and Balmar alternator fit woes

thank you, much appreciated
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Old 30-09-2018, 20:32   #18
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Re: Yanmar 4JH4E and Balmar alternator fit woes

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What I find with all the boats I’ve owned (3) is that modifications away from the manufacturer is necessary. Balmar has never heard of a thing like cutting the bracket to fit an engine yet balmar (dale) who are great people won’t tell you to set the mc614 regulator bulk and absorption amp and time levels to battery manufacturer specs. I first went balmar way.... then Maine Sail told me correct settings and alt worked 100% better. Factor settings on the regulator are 19 minutes bulk, 19 minutes absorption then to float...... my 500 amp bank will never charge listening to that. Now with Maine sails advise I stay in bulk and absorption much longer at higher voltage (to match battery specs) and batteries love it (and so does my cold beer). We on our boats are real world and have to adjust and set things accordingly.


Hi there,

Just wondering what times did you use for bulk and absorption. I find the same, the batteries do not charge fully with the factory settings.

Thanks
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Old 30-09-2018, 21:58   #19
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Re: Yanmar 4JH4E and Balmar alternator fit woes

I will have to check bulk but absorption is 3 hours. And volts has been set to match battery profile.

Greg
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Old 30-09-2018, 23:35   #20
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Re: Yanmar 4JH4E and Balmar alternator fit woes

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I will have to check bulk but absorption is 3 hours. And volts has been set to match battery profile.

Greg


Thanks Greg, much appreciated if u could find the bulk. I know my mains charger uses 4 hours.

Harry
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Old 10-10-2018, 15:43   #21
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Re: Yanmar 4JH4E and Balmar alternator fit woes

Quick update. First, though Balmar was very willing to help, I was amazed that they had never heard of the problem I'm having and so had no real solutions to offer. Peter at PKYS also offered some suggestions but had never encountered this either.

Today while ordering replacement hoses, the Yanmar dealer sent me the parts drawing to be sure I could identify the hoses. There in the drawing was the solution. Yanmar has an optional hose and retaining clip to make more room for the alternator. The downside is you lose the petcock drain. It is surprising all that Yanmar engineering prowess couldn't come up with a solution that preserves the drain. NYSail managed to finesse his original hoses to make more room so that is an option too. It wasn't an option for me because the hoses are still original and twisting where they attach was too risky - which is why I was ordering the replacements in the first place.

One photo shows the Balmar Series 60 slightly compressing the coolant hose. It also shows a second hole in the tensioner arm that is required unless you want to modify the tab on the top of the alternator. Lastly, I had hoped to attach one of the nifty Balmar Universal Belt Buddys for easily adjusting belt tension. It doesn't fit. Balmar offers something that includes a new tensioner arm especially for the 4JH4E, but they were out of stock.

The second attachment is the parts drawing for the hoses showing the optional hose and retaining clip. BTW, the designated retaining clip is critical. You can't reuse the existing retainer clip. It is designed to go around the pipe (so too small) and the designated part has some bushing material to prevent it from chaffing the hose.

For now I am back to the stock alternator but will update the thread when I eventually complete this "quick upgrade kit".

Harry
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Old 11-10-2018, 01:51   #22
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Re: Yanmar 4JH4E and Balmar alternator fit woes

How come it works for NYSail and not for you with the exact same system ? Did you try to twist and slide deeper the hose as he suggested ?


Anyone would advise a good source in europe for the serpentine & pulley kit ? (4JH4-E here)
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Old 11-10-2018, 05:00   #23
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Re: Yanmar 4JH4E and Balmar alternator fit woes

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How come it works for NYSail and not for you with the exact same system ? Did you try to twist and slide deeper the hose as he suggested ?

(4JH4-E here)
Great question. NYSail did his twist and slide thing early on when he noticed basically the same problem with the standard alternator. The problem isn't so pronounced with the standard alternator because the case diameter is slightly less. NYSail was able to finagle more clearance when he replaced his hoses. My hoses have been on too long and I didn't want to force them. These two were not changed by my mechanic when I had the system flushed and the rest of the hoses replaced. I didn't notice that until I got into attempting the upgrade. I will change my hoses soon and so might try both and see what looks best.
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