Yanmar Hitachi Alternator Wiring Diagram

This topic is now archived and is closed to further replies. Hitachi yanmar alternator machine sensed or battery sensed. 3ym30 12 marine installation manual volume 2 standard alternator data performance curve for 60a alternator figure 7 parameter data yanmar code 128271 77200 alternator model lr160 741 hitachi ic regulator model sa a hitachi battery voltage 12 v nominal output 12 v 60a earth polarity negative earth direction of rotation viewed from.

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Yanmar hitachi alternator wiring diagram. Yanmar 3gm30 wiring archived. Make sure your yanmar engine is cool and the electrics turned off before attempting to wire the alternator. Hitachi lr180 alternator 80amp. Yanmar 60a alternator compass marine inc.

Now i have to find out why the blower doesnt work and why the sparky has disconnected a relay from which a black wire is connected to the alternator above but the orange wire from the relay is cut. Check the rear of the alternator attached to your yanmar engine to find how many terminals it has and their labeling. Youll need to touch parts of the engine. I replaced my yanmar 3gm30f alternator with a balmar alternator and regulator myself.

Reminder this was not the yanmar original. If you have the wiring diagram for the engine its fairly straightforward installation. Alternator demo wiring connection to battery. The 2 small wires shown on the back of the hitachi alternator appear to be related to warning lights rather than switched voltage.

I have the wiring diagram but i cant see anything that looks like switched 12v coming through the harness. Use of forum. Alternator wiring diagram and engine wiring diagram from the yanmar service manual are attached below. If you have a temp compensated alternator or a hitachi alternator on a yanmar you really are in dire need of external regulation if deep cycling a larger battery bank.

You are correct the internal regulator of the stock alternator is not made for a marine deep cycle environment its more along the lines of your car alternator.