Case 1845c Alternator buzzer

[mirgard]

Hi
I got a problem...the alternator buzzer keeps buzzing =) i have owned the skid steer for about 6 month and under that 6 month the alternator buzzer did buzz a couple of times when i was using it and it stopped after 5 sec and for about a month now i have had the alternator buzz when i start it but stopped when i rev up but now it wont stop even when i push the throttle to max
do you think the alternator need to be changed or could it be the battery?

 

[DIYDAVE]

could also be a slipping or glazed belt...

 

[mirgard]

Ahh most check that, thanks alot!

 

[mirgard]

Checked the belt and alternator fan is spinning also checked the battery and when the engine is off the load on battery is 12,7V and when i start the engine it is 12,5V in low speed and 12,7V in high speed...

 

[Delmer]

Yes, that sounds like a bad alternator. Is there a shop that repairs alternators near you? An electric motor repair shop might if there's not a place specialized in starters and alternators. It could be something as simple as worn brushes, and I always prefer to rebuild what is there, rather than get a "rebuilt" aftermarket alternator with all new "cheap China" parts. It all depends on local prices though, I suppose.

Did you check the belt tension? You should be able to press the belt in about one centimeter at the middle of the longest span, 2 or 3 centimeters is too loose. Usually you hear squealing when you first start the engine if the belt is slipping.

 

[mirgard]

Thanks Delmer, I have ordered a new alternator, do you guys think its wise to change water pump and fan belt as well when i am already there ?

 

[Delmer]

That water pump is probably cheap, otherwise I wouldn't change the water pump. Yes, change the belt. If you do change the water pump, then try to check it for leaks before you put it all back together.

 

[Hollyrock]

Connections on the main electrical plug can be loose or not making a good connection. Clean them up use a very small amount of copper anti seize on them. Or did a new alternator fix the problem?

 

[heymccall]

There are several trailer plug connections at the rear of the cab, passenger side, that are nothing but bullet connectors in molded bodies. They corrode and/ or lose tension. I've given up on them and replaced them with AMP weather sealed connections, like on a Caterpillar. Also, the nearby fuse holders also rot/ lose tension. I've replaced those also. Had to do that on all 4 1845c machines here. #1 symptom is when starting...takes several attempts to get the starter to engage.