No charge

[Goat 2141 5]

Have a 520h it will charge the battery how can fix it.  

[RandyLittrell 3,827]

Your gonna have to give us more to go on. I recommend checking all your grounds first. Don't just tighten them, undo them, use a small wire brush to clean them and then put a little dialectric grease on the connection. If still no go after that, I sure somebody smarter than me can help!! 

 

 

 

 

 

Randy

[Pollack Pete 2,273]

Are you sure the battery is good and fully charged? Gotta start out with a good battery.

[FatJackDurham 318]

I had the same issue. I replaced the rectifier and it fixed the problem, but you should also check the fuse between the rectifier and the battery.

 

Check Fuse: use a voltimeter, test the battery voltage - should be 12+. Then, leaving one lead on the negative terminal, check the voltage on the center spade of the rectifier, with everything still connected. IT should be the same voltage. If not, your fuse or fuse connectors are suspect.

 

If the fuse checks out, you can try replacing the rectifier. If that doesn't work, dunno.

Edited August 22, 2018 by FatJackDurham

[Goat 2141 5]

5 hours ago, RandyLittrell said:

Your gonna have to give us more to go on. I recommend checking all your grounds first. Don't just tighten them, undo them, use a small wire brush to clean them and then put a little dialectric grease on the connection. If still no go after that, I sure somebody smarter than me can help!! 

 

 

 

 

 

Randy

Ty will Checkit out 

[Goat 2141 5]

3 hours ago, Pollack Pete said:

Are you sure the battery is good and fully charged? Gotta start out with a good battery.

Battery is new

[Goat 2141 5]

3 hours ago, FatJackDurham said:

I had the same issue. I replaced the rectifier and it fixed the problem, but you should also check the fuse between the rectifier and the battery.

 

Check Fuse: use a voltimeter, test the battery voltage - should be 12+. Then, leaving one lead on the negative terminal, check the voltage on the center spade of the rectifier, with everything still connected. IT should be the same voltage. If not, your fuse or fuse connectors are suspect.

 

If the fuse checks out, you can try replacing the rectifier. If that doesn't work, dunno.

Were is rectifier at . All fuse are good ty for the help

[FatJackDurham 318]

58 minutes ago, Goat 2141 said:

Were is rectifier at . All fuse are good ty for the help

 

Rectifier is on top of the engine, attached to the sheet metal shroud, just in front of the battery. Looks like a flat rectangle with three prongs in a row. The prong on the right will have a double connector, be careful not to break it. The rectifier is held in by a single bolt. Take the bolt out, slide the rectifier towards the bolt hole about an 1/8th of an inch, and it will come right out.

 

Here is an example on Ebay, with some pictures, but you can get them for cheaper on amazon. 

https://www.ebay.com/itm/Voltage-Regulator-Rectifier-For-Onan-Engines-P216-P218-P220-191-1748-191-2277-/331722291941

 

Be sure to test the middle prong with the wire STILL ATTACHED and the negative battery terminal for voltage. Even though the fuse is good, the fuse holder may have corroded terminals in it. I had to replace one recently on my 416-8 which was preventing it from charging. Also, with the engine running set your voltimeter to Alternating Current and put your probes on the two side terminals, one on each side, at the same time. Your A/C voltage should be around 35 volts plus or minus. 

 

Also, download and consult both the demystify guide.  In the "glossary" section, it describes all the electrical components and how to test them. In the 520H section, it will have an electrical diagram.

 

Edited August 22, 2018 by FatJackDurham