240 General: - voltage regulator question

microflight · Sep 6th, 2006, 02:35

I have a 1979 240 and it is not charging. Is the voltage regulator built into the altanater.
Thanks
Jeff

Alec Dawe · Sep 6th, 2006, 19:21

Normally with the 240 its the brush gear that has worn down so much that you don't get a charge, its simple to replace, can be usually done with the alternator in the car. Often its as cheap to buy the complete new brush holder and voltage regulator unit in one piece, rather than just the brushes, as I think you have to solder the brush wires, which can damage the voltage regulator if you're not very careful.

Last time I did a brush holder and regulator unit in the country, I think it cost me about£9.00.. say $20.00 ish.

Its tha black plastic and alloy thingy on the back of the alternator, held onto the alternatir casing by two screws. If you are doing it with the alternator in the car, I think that you don't even have to disconnect the alternator wiring. Make sure you disconnect the battery tho!!!!

Clifford Pope · Sep 7th, 2006, 13:34

I think what the questioner might be meaning is that some early models of alternator did not have a built-in voltage regulator, but had a separate unit bolted on to the wing. I don't know whether any of these still survive (I used one on my previous car, an 83, pulled from a 77 model), or whether like for like replacements have been possible. Probably in those circumstances it is better to find a seconhand alternator of the modern kind, replacing the brushes if necessary.

Alec Dawe · Sep 7th, 2006, 13:47

Quote:

Originally Posted by Clifford Pope

I think what the questioner might be meaning is that some early models of alternator did not have a built-in voltage regulator, but had a separate unit bolted on to the wing. I don't know whether any of these still survive (I used one on my previous car, an 83, pulled from a 77 model), or whether like for like replacements have been possible. Probably in those circumstances it is better to find a seconhand alternator of the modern kind, replacing the brushes if necessary.

COR!
I didn't even know that any were built with a separate voltage regulator, you lives and learns.

Clifford Pope · Sep 8th, 2006, 08:25

Described in Haynes. The regulator is mounted near the radiator overflow bottle, with a plug-in cable from the alternator.

Sep 6th, 2006, 02:35	#1
microflight New Member Last Online: Nov 14th, 2007 20:45 Join Date: Sep 2006 Location: orlando	voltage regulator question I have a 1979 240 and it is not charging. Is the voltage regulator built into the altanater. Thanks Jeff

Sep 6th, 2006, 19:21	#2
Alec Dawe Former Support Team Last Online: Jan 26th, 2024 11:26 Join Date: Jan 2006 Location: Nr Norwich	Normally with the 240 its the brush gear that has worn down so much that you don't get a charge, its simple to replace, can be usually done with the alternator in the car. Often its as cheap to buy the complete new brush holder and voltage regulator unit in one piece, rather than just the brushes, as I think you have to solder the brush wires, which can damage the voltage regulator if you're not very careful. Last time I did a brush holder and regulator unit in the country, I think it cost me about£9.00.. say $20.00 ish. Its tha black plastic and alloy thingy on the back of the alternator, held onto the alternatir casing by two screws. If you are doing it with the alternator in the car, I think that you don't even have to disconnect the alternator wiring. Make sure you disconnect the battery tho!!!! __________________ Alec. (My other car is a WD 2-10-0)

Sep 7th, 2006, 13:34	#3
Clifford Pope Not an expert but ... Last Online: Today 08:24 Join Date: Dec 2001 Location: Boncath	I think what the questioner might be meaning is that some early models of alternator did not have a built-in voltage regulator, but had a separate unit bolted on to the wing. I don't know whether any of these still survive (I used one on my previous car, an 83, pulled from a 77 model), or whether like for like replacements have been possible. Probably in those circumstances it is better to find a seconhand alternator of the modern kind, replacing the brushes if necessary.

Sep 8th, 2006, 08:25	#5
Clifford Pope Not an expert but ... Last Online: Today 08:24 Join Date: Dec 2001 Location: Boncath	Described in Haynes. The regulator is mounted near the radiator overflow bottle, with a plug-in cable from the alternator.

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