boatingman_2001
Recruit
- Joined
- May 28, 2004
- Messages
- 5
Hi,<br /><br />Im trying to help my brother solve a voltage overcharging problem with his 1986 Johnson 60 HP, 3 cylinder, Model No. J60ELCDS, Serial No. J7122470. Until recently, after starting the boat the dashboard voltmeter would read around 12.5 - 13 volts. Now it begins normally but climbs quickly and doesnt stop until it reads about 18 volts. Turning on the accessories only drops it a few volts into the 16.5 - 17 volt range. The battery is in great condition, weve tested the rectifier with a DVM and it appears to be ok. We measured the resistance on the stator leads to be about .6 - .7 ohms but we dont know of its a 6, 9 or 15 amp alternator and couldnt verify the measurement with the table in the Clymers manual that we have. Around the same time the overcharging problem appeared, the tachometer began to flake out and bounce all around the place. Ive learned, perhaps too late, that we should never disconnect the battery when the motor is running but we did because we were in the middle of the lake and worried that we would cook the battery. As it turned out we toasted the fish-finder and the newly installed CD player. Even thought the rectifier appears to measure ok could we have damaged it? Possibly the stator or the power pack? What should we be looking for? Please help shed some light on this issue, thanks. <br /><br />Kevin