Flywheel removal NS 8B & alternator question

[Conchy Joe]

Just bought a boat with a prestine 1993 Nissan 8HP (8b). This is a manual start long shaft sailboat motor. It didn't have an alternator option so I ordered one along with a manual. I now see they recommend a flywheel puller. I have seen suggestion on loosening the flywheel nut and banging on "it" with a brass hammer. "It" MUST be the flywheel (strike from below) and not the flywheel nut (strike from above) right?

About the alternator. A car alternator must always be connected to a battery when the engine is running or it will get damaged. Must the outboard alternator be connected to a battery everytime the motor is running as well?

Thanks in advance.

 

[Conchy Joe]

Re: Flywheel removal NS 8B & alternator question

I have found out the answer to these questions by a Nissan factory rep. and other sources. For those who may be searching and run across this thread, here are the answers from Nissan itself.

Alternator CAN be ran without battery load, just don't let the wires touch each other (From factory).

Also was told on another source don't switch battery load on and off while motor is running. (Not sure if this is correct but sounds good).

Flywheel removal...Tool was on ebay for $88 BIN or best offer, I offered $50 and got it.

Note, tool was advertized as 40HP and up but Nissan repair manual stated that the number of the tool advertised was the correct for the 8 HP as well...and it was!

So, hope this helps! Good luck!

 

[pvanv]

Re: Flywheel removal NS 8B & alternator question

Did you also get a rectifier kit, or only the alternator? If you want to charge, you need to convert to DC, not just the AC from the alternator. The AC output from the alternator is fine for lighting, but not charging.

 

[Conchy Joe]

Re: Flywheel removal NS 8B & alternator question

Oh yeah, I got the rectifier kit too.