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1130 charging system

Ok I know this is not a old antique question but I need some ideas. We have a 1130 that we use on augers and things like that. It quit charging. I checked the batteries and they are ok after being charged up. I cleaned all the battery cables even the ground to the block. I took the regulator off and had it checked it was bad so I replaced it with a new one. Still no charging, took the alt off and had it checked, it was ok but the bearings were going out of it so I put a new one on. Checked the wires on the regulator to see if there was a break and all was good. Took the regulator off again and had it re checked still ok. It still won't charge what am I missing?

RE:1130 charging system

Dan I will be watching this post to see what answers you get. I haven't got a 1130 but a 44D which has the same problem. I have done all the things that you have done but nothing makes any difference. It still won't charge. I know it has a dynamo (Generator I think you call it) not an alternator but I think the principle is the same. Thanks Alan

RE:1130 charging system

Hey Dan,   Sometimes troubleshooting "over the phone" can be tricky, so bear with me.
First you have to determine if the alternator is not charging or is the system not charging into the batteries.
Get your voltmeter out.  With engine OFF- check voltage of batteries.  Should be close to 12V.   With engine RUNNING (fast idle) check voltage at the larger output wire on the alternator.  Should be around 13.6V    It needs to be greater than whatever you measured at the batteries.
Let me know what you see this far.

Paul


RE:1130 charging system

I have 12.4 volts at the battery and 12.4 volts at the big terminal at the back of the alternator when it is running. It is a new alternator but I suppose it could be defective.
i have a OTC alternator tester and it says the regulator field is open but I had the regulator re checked and it is good.

RE:1130 charging system

Dan,

Can you post a photo of the rear of your alternator?  Is it a single wire, or a three-wire set-up?  I had a charging issue on another "color" tractor recently.  I had 13.5 volts at the battery terminal and the feed terminal on the alternator, but I was only getting 6 volts on the "activation" terminal.  That was not enough to tell trigger the charging mode.  I got a kit for the "resistor wire" to the activation terminal, and that fixed my problem.

I aimed to get out to the barn and see what was on my 1130, but didn't make it out there during today's blustery conditions.  If you might be able to post a photo of the wiring set-up on back of your alternator, or even tell me how may wire system it is, that might enable me to give you some other ideas.

Cheers,

JB

RE:1130 charging system

It has two wires. One is the big red wire and it goes to the battery, it is on the left side of the alt if you are looking at it from the rear. The other wire goes into a plug at the top back of the alt and that wire goes to the field terminal of the external regulator.

RE:1130 charging system

There's a "full-field-test" you can try that by-passes the regulator.  You can look on the internet for diagrams and instructions.  Basically conecting your voltmeter to the alternator output terminal first and then momentarily/briefly  hot wiring the field terminal with 12 volts to kick the alternator in high gear.  By bypassing the regulator you should be able to determine if it's a bad regulator or an open field circuit in the alternator.  Never tried it myself, but have seen guys do it.

RE:1130 charging system

I just took the alt off and had it tested it is working fine. I went over to the Massey dealer and talked to them. They said to check the oil pressure switch because that is where the regulator gets its switched voltage. Now if I can just find a kid with small enough hands to get in there I will check it out.

RE:1130 charging system

Hi Dan,    Checking Alt/Reg - (Delco) ---  Hook a voltmeter Pos. (red) to large Alt. output terminal and Neg. (black) to a good ground.  Voltmeter should read battery voltage.  Start the engine and run it 800 to 1000 rpm.  The voltmeter should now read 13.5 to 14.5.  If not unplug the 4 wire connector from the Reg. ---  Insert a small jumper wire from #3 to F of the removed connector.  If voltage now increases Alt. is working. (volt may go quite high -14 to 17 volts - do not operate this way very long)  If the voltage did not go up, remove F terminal wire from back of Alt. and install a jumper wire from the Alt. F terminal to the Alt. output terminal.  If Alt. voltage now goes up the wiring is bad from the Reg.  If voltage does not increase Alt. is not working or is not grounded.  If voltage increased wiring problem from Reg. to F or #3 terminal at Reg. does not have Battery voltage. (#3 should have battery at all times) ---  For the Reg. to work it must have a good ground and #2 wire must have battery voltage when the engine is running.  #2 is connected to the battery by the Ignition switch on some models or by an engine oil pressure switch on most Diesels.  If #2 does not have battery voltage with engine running the Reg. can not work.  #4 wire may not be used or it may feed the gauges or the Alt. light if one is used.  With Alt. charging the voltage at the Alt. output should be the same as voltage at the battery (not over .2 to .4 volt less at the battery)  If it is over .5 volt lower at the battery there is a wiring problem or ammeter problem.  If Alt/Reg is working correctly you should have 13.5 to 14.5 volts at the battery at  800 or higher rpm.         Jerry

RE:1130 charging system

Found the problem the wires on the amp gauge was rusted very bad. When I tried to take the wires off the stem broke so I put a new gauge in. All back together and still won't charge. My meter says the field is open. I decided to take the voltage regulator off again and have it tested. When I looked at it one of the connections were bent back keeping it from making connection. It is very difficult to see the connector when you plug it in up behind the hood. So I got a mirror out and watched when I plugged it in. All was well and I started it up, yeah it worked. Problem solved. That was a lot of work to figure out. Thanks for all the help.