alternator

  1. Gregory Beach

    Seized bearing on pinion stud

    Hello, there! Just replaced both alternators and the port side presentation suggested some hardware replacement. First was the pulley - it was seized pretty well, but I was able to pop it off. Now I find the bearing seized on the pinion stud and I cannot get it off for the life of me. It's...
  2. Delta Ron

    1990 vintage alternator, self-exciting or not?

    Hi folks, our 1990 express cruiser has the 2 454's. I'm installing a new battery isolator, on the package it states "this isolator will not with self-exciting alternators. My question is, do i have self-exciting alternators on our boat?? I put new alternators on 2 years ago. I have pics of the...
  3. F

    Wiring diagram 1993 440 sundancer

    I have a big issue with my charging system. Does anyone know where to get a wiring diagram for a 1993 440 sundancer ?
  4. C

    Cat 3116 alternator

    Can someone tell me the OEM part number for the Cat 3116 alternator. Also if anyone knows the new alternator part number. I ordered a new one and it wasn’t even close even though it said it fit my motors
  5. Bryan Innes

    Charging issues

    I am having an issue with the port alternator charging. If running on its own it’ll run at 13.4 volts but when I fire up the starboard engine it spikes and stays between 15.5-17 volts depending on RPM. The starboard motor never really goes over 13.4 volts. Both alternators tested good. Both...
  6. M

    Seized Alternator due to failed sea water pump

    Horrible squeal upon starting engine (at home on the trailer). Last month I replaced the sea water pump that had been leaking out the front seal/ pulley (spraying salt water all over the front of the engine. As I feared, the salt water got into the alternator, corroding and seizing the unit...
  7. 1

    Voltage problem

    Took my '97 SR 330 DA for a shakedown ride. Everything great for 45 min's. Slowed to idle for no-wake zone and port engine shut off. I could restart it, but the only way to keep it running was to goose throttle and keep rpm's above 1600. Cursed. Turned around. Limped on 1 screw. Restarted port...
  8. 1

    Intermittent Voltage/ charging/ idling problem

    Took my '97 SR 330 dancer for a shakedown ride. Everything great for 45 min's. Slowed to idle for no-wake zone and port engine shut off. I could restart it, but the only way to keep it running was to goose throttle and keep rpm's above 1600. Cursed. Turned around. Limped on 1 screw...
  9. muskokamarc

    1987 Cuddy Cruiser Alternator Issue - Thoughts?

    Hi everyone, I've been having issues where my boat (1987 Sea Ray Cuddy Cruiser, Inboard 230HP 5.0L V8 Mercrusier) will die when out on the water, turn over when I try to start it, but wont start. I believe it's the alternator because when I get towed back in, and charge the batteries, it...
  10. Gyroe1970

    V belts for 87 230 weekender 5.7

    For the love of pete I can't find out what the right part numbers are for the 2 v belts on my 5.7 omc engine. Im replacing the alternator and the water pump. Can anyone point me in the right direction? I ve been on several websites and there are so many part numbers to different ones I cant...
  11. E

    No output from new alternators

    Due to sub 12 volt readings on my voltmeters checked battery voltage with engine running. Only 12 volts. Getting only 11 volts at alternator output. Removed alternator and shop verified alternator bad. Bought two new alternators since voltage readings on port also low and now have no output...
  12. G

    wiring diagram 1996 SeaRay 210 Signature and alternator question

    Does anyone know where I can get the wiring diagram that includes the numbering tags on the wires? I changed alternators and the one I put in is from an older boat. It had a post that the choke wire which is purple/yellow attached to. I ran it to another wire that goes 12+ when the engine starts...
  13. N

    Hot Alternator on Shore Power

    I just purchased a 2004 240 Sundancer. I brought the boat home and connected the shore power to my house to charge the batteries and have power while I cleaned it out. Initially the voltage of both batteries were about 11.6v, after about 24 hours of charging they now read 13.6v. While I was...
  14. ranfot

    upgrading alternator on '86 270 sundancer

    Hi All, I have '86 270 Sundancer with Dual Mercruiser 262 4.3L engines. I'd like to upgrade both 55A alternators to 100A or higher. Can someone let me know the part number or which car has alternator with higher amps that will fit the engine. Thanks.
  15. markrinker

    65 watt alternator from Mercruiser 350 MAG MPI

    65 watt alternator for Mercruiser 350 MAG MPI This is a low hour (~150 running hrs on boat when removed) used alternator from a '98 model year Mercruiser 350 MAG MPI powered boat. I had it professionally checked/cleaned and then kept it for a spare over the course of seven seasons and two...
  16. 8

    alternator charging issue

    Does anyone know what alternator came on a 1987 V6 175 Mercruiser? Alternator make and amp output? I've got twin v6's charging 3 batteries, 1 engine charging 1 battery and the other engine charging 2 batteries. The 2 battery bank is getting a high charging rate. i'm wanting to add a battery...
  17. 8

    alternator charging issue

    Does anyone know what alternator came on a 1987 V6 175 Mercruiser? Alternator make and amp output? I've got twin v6's charging 3 batteries, 1 engine charging 1 battery and the other engine charging 2 batteries. The 2 battery bank is getting a high charging rate. i'm wanting to add a battery...
  18. K

    Voltmeter bouncing, electronics "resetting"

    I have a new problem with my electrical system that I could use a little advice troubleshooting. This is my 2nd season with the boat and have not had this problem before. My charging system says that the batteries are in trickle mode and they seem to both hold a charge. However, I need to...
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