Massey 1655 Not Charging the Battery

NUTNDUN

NUTNDUN

Tractorologist
Staff member
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Good thing is I remembered some things I learned about the charging system on the Onans. Been having issues with the Massey not charging the battery lately. At first I wrote it off as the ammeter not working right because I barely use the thing. After not being able to crank it over the other day I knew the ammeter was right. LOL

So last night pulled it into the garage and used my voltage meter and I had good A/C voltage coming from the stator or whatever it may be called. Checked the voltage coming out of the rectifier and even at full rpm I could only get 3.8 volts. I ordered a new rectifier from Bolens 1000. Just need to charge up the battery some more. Going to take it up to the campsite to level out some stone tomorrow.
 
Shorty said:
Frustrating when you want to quick use a tractor and the battery is dead.....
Click to expand...

You got that right. Always seems to be the case especially when they sit in storage so much. Be cool to have an easy to carry battery pack you can use in all the tractors so you only have to maintain one battery.
 
I know those bolt in, not sure if that is a ground for the rectifier. Might be a connection issue somewhere and you wiggled things enough it started working again.
 
The gauge might have an intermittent short in it?

I've had a bunch that went bad like that. The needle waging back and forth like a happy dogs tail is a sign of an intermittent short or just a worn out gauge. Some will only show between 5amp charge or discharge and won't go any higher or lower. And a fully shorted one will pop fuses, burn up the regulator, and the + terminal on the back of the switch will get hot and melt the connector if it has a plastic terminal plug.

You can test one with a simple test light. The light will flicker on/off or it won't light your 12v test light at all if it's completely shorted.


Does anyone have any experience with rebuilding a regulator/rectifier?

I have 2 16 amp Briggs regulator/rectifiers that went up in smoke and I want to try to heat it up enough to melt the goop off of the board so that I can see what went bad in them and possibly fix them. Can't hurt to have a couple of spares on hand. "just in case" and I'm to cheap to buy a new one just to have it as a spare.

I bought a new one for it and put it in after fixing the stator wire that rubbed through and shorted out on the ring gear. Previous owner had a new Stator and regulator on it put on it but who ever put it in had the washers on the inside of the stator. So it was sitting out a good 1/4" to far. Luckily the flywheel did not rub on the windings much. I found 1 spot on the winding that the coating was rubbed off on. I put some of that liquid electrical tape on it.

Stator is putting out around 32v AC at WOT so my fix worked and the stator is not hurt. I'm getting around 14v DC out of the new regulator.
 
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