336D Alternator Upgrade & Lights

California · Dec 29, 2011

Gypsyman, what was the original application for your replacement alternator? I think we've seen this same question before and so far as I know, nobody has posted what widely-used alternator is a replacement for the late 70's, early-80's Yanmars. (The Powershift era).

Just a FYI for anybody researching this in the future: Yanmars earlier than YM336 used the same Hitachi (not Mitsubishi) alternator and matching regulator that Datsun (Nissan) used in 1971~73. The 35 amp Hitachi alternator listed for Datsun without air conditioning is a direct bolt-in, plug compatible replacement for the 15 amp alternator that Yanmar put on YM1900 and YM2000. The 50 amp alternator that Datsun used with A/C bolts in and uses the same regulator, but physically it's a little fatter so it might need a longer adjusting arm and belt. After '73 Datsun used the same regulator for a few more years but went to a different Hitachi alternator. These Hitachi parts are still inexpensive and available everywhere. Tell the counterman you have a Datsun.

I don't know if these early components are suitable for later Yanmars. But if Yanmar continued to use that regulator, then perhaps a later 70's Datsun alternator is the right match. Anybody know?

Gypsyman · Dec 29, 2011

Sound like the same unit. The alternator that I recieved just happened to be a Mitsubishi brand. The alternator and regulator I used were for a 1974 Nissan B210 and quite a few other applications.

grainger12002 · Jan 3, 2012

Another great post,I too will upgrade the alt and improve on the lights, only time I remember is when its cold and the days are short...... Thanks for the post!!!

From CT

Comotoes · Jul 28, 2013

Gypsy, I know this is a stale thread but I was wondering (besides the dandy alternator information) about your cool Cozy Cab top. Did you add that? Which one is it? Is it very functional and did you pay $500 for it?!

Thanks for a great post (2 years later!).