Mercruiser 470 charging issue

JVboat

Recruit
Joined
Aug 5, 2006
Messages
1
I have a stator type with watercooled voltage regulator. The voltage output stays at about 12.8v, same as battery when not running. when I perform continuity test on stator yellow/ red to yellow red wire 0.6 ohms, y/r to ground infinity both wires, voltage reg infinity each terminal to ground, hook up y/r wires, disconnect purple, place amp meter in line, run engine 1000 rpm no amps, replace purple, disconnnect orange and place amp meter in line, run engine 1000 rpm, no amps. Ground one y/r and get 12.8 amps, ground second y/r get 12.9 amps. According to book everthing should be good. Battery barely being charged. What to check next??
 

nola mike

Admiral
Joined
Apr 22, 2009
Messages
6,014
Re: Mercruiser 470 charging issue

I'm going through the same thing. Stopped testing after realizing that every test ended with "replace voltage regulator". I ended up getting an alt conversion from breezeworks, will be installing on friday...
 

fmalott

Chief Petty Officer
Joined
Jun 28, 2010
Messages
561
Re: Mercruiser 470 charging issue

Your going to ask for help until your eyes pop out there is no solution for the voltage regulator you can buy a new one but it will also fail down the road that's why they made the alternator conversion to solve the charging problem
 

wrestling coach

Petty Officer 1st Class
Joined
Jun 27, 2011
Messages
210
Re: Mercruiser 470 charging issue

I installed this low mount kit from Breezeworks last week in my Grady White. Outstanding kit, wiring harness and instructions. I did, for my application, purchase a slightly shorter belt than the one provided to give a bit more clearance from the doghouse.

Dennis
DSC03163.jpg
 
Joined
Mar 27, 2010
Messages
3,028
Re: Mercruiser 470 charging issue

That alternator came with that fancy chrome pulley? or is that your doing? :p
 

wrestling coach

Petty Officer 1st Class
Joined
Jun 27, 2011
Messages
210
Re: Mercruiser 470 charging issue

That's the way it came from Breezeworks.

Dennis
 

alpharay

Cadet
Joined
Oct 26, 2011
Messages
7
Re: Mercruiser 470 charging issue

is breezeworks still in operation? I can't seem to purchse or contact them and have noticed it's not on ebay anymore. can you give me the specific web address?
 

69bertramsf

Cadet
Joined
Jun 9, 2012
Messages
12
Re: Mercruiser 470 charging issue

I've got 2 3.7 merc.s in my boat bought a marine single wire alt. For mine and used u universal alt. Bracket from advanced auto parts and bent it with a brake only had 95to dollars in the whole thing
 

alpharay

Cadet
Joined
Oct 26, 2011
Messages
7
Re: Mercruiser 470 charging issue

talked with kevin, he said the cart is broken or something. gave me a number to call. just want to make sure its all legit. no desire to loose a couple hunbdred
 

stonyloam

Vice Admiral
Joined
Mar 13, 2009
Messages
5,832
Re: Mercruiser 470 charging issue

Kevin is OK, spoke with him myself when I got mine.
 
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