Author Topic: Oil Pressure Switch - Help  (Read 274 times)

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Nirvana

  • Nirvana - H46 #13
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Re: Oil Pressure Switch - Help
« Reply #7 on: February 05, 2021, 11:57:30 AM »
Matt, last year I replaced both Hitachi alternators with Balmar 100A and included their ARS-5 controllers.  This required extensive and complete new cable runs to support 100A ea., upgrading the isolators and bypassing the stock breakers to upgraded BlueSea 100A breakers as well.

It meant detailing the DC charging system to the Nth degree.

Point being there was no external control on the alternators as you describe save the breakers.  I know it
Ken Sabatini
Nirvana - ‘97 Hylas 46 #13

MattH

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Re: Oil Pressure Switch - Help
« Reply #6 on: February 02, 2021, 01:23:04 PM »
I'm back in the US. Matilda is in Mexico. I ordered a standard switch that is 1/8" and a bunch of adapters. I will post the answer to my question when I determine which is the right one. Heading back to Mexico in late February. BUT. I'm not really sure that the thing is necessary. I believe it's purpose is to keep the alternator from loading the engine and starter on start-up until the the oil pressure is up. My Balmar controller has a built-in delay of about 5 seconds before it starts to load the engine. Any thoughts?

Nirvana

  • Nirvana - H46 #13
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Re: Oil Pressure Switch - Help
« Reply #5 on: January 29, 2021, 12:50:31 PM »
Matt, same engine here.  Any chance you could post a pic of the sensor you are referring to?  Might help identify which one it is and where.
« Last Edit: January 31, 2021, 02:06:51 PM by Nirvana »
Ken Sabatini
Nirvana - ‘97 Hylas 46 #13

joel

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Re: Oil Pressure Switch - Help
« Reply #4 on: January 27, 2021, 10:00:57 PM »
I

MattH

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Re: Oil Pressure Switch - Help
« Reply #3 on: January 25, 2021, 07:27:59 PM »
Thanks for the reply.
Yanmar 4JH3-TE
It looks like 1/4 NPT unless it is metric

Matt
46 #46
Matilda
Puerto Vallarta
« Last Edit: January 25, 2021, 07:39:37 PM by MattH »

joel

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Re: Oil Pressure Switch - Help
« Reply #2 on: January 25, 2021, 07:23:39 PM »
Matt,

Welcome!  Which engine do you have (not that I will have the answer, but someone else might)

Joel
44 # 66
Atlantis
Annapolis MD

MattH

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Oil Pressure Switch - Help
« Reply #1 on: January 25, 2021, 07:03:40 PM »
I am new to the forum. This is my first post. I need to replace the oil pressure switch that is connected to the alternator control circuit. It threads into a little manifold that also feeds the oil pressure send unit. Does anybody know the thread size for this?

Matilda
H46 Hull#46
« Last Edit: January 25, 2021, 07:18:44 PM by MattH »

 

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