I have noticed recently that when lights etc. are turned on that my fuel guage reading drops, I had thought it might be the voltage regulator, but in the rain yesterday I noticed that with lights on and braking the indicators failed to work.
The battery is new and reads 12.8v across the terminals. Alternator output (2000 revs no load measured at the battery terminals) 13.8v dropping to 13.5v on idle. On load the output drops to 13.5v at 2000 revs, 13.1/13.2v at idle.
Looks like I need to look at the alternator.
Question is how are the brushes attached? Are they on a screw terminal or welded/soldered?
EDIT: I have now seen videos on line showing they are screwed - so I'll get some brushes and replace those first.
Alternator issues
Re: Alternator issues
Right, alternator brushes now replaced. Cheaper than a new alternator.
I did the job without removing the alternator from the car, and once I had the socket sizes (supplied by my assistant - see first picture) the job was fairly simple.
Now have 14v output and more importantly 13.8v under load at about 2000 revs. Also the indicators work with lights, HRW and fan on under idle.
Helper was useful for retreiving the screws dropped under the car.......
I did the job without removing the alternator from the car, and once I had the socket sizes (supplied by my assistant - see first picture) the job was fairly simple.
Now have 14v output and more importantly 13.8v under load at about 2000 revs. Also the indicators work with lights, HRW and fan on under idle.
Helper was useful for retreiving the screws dropped under the car.......
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Re: Alternator issues
Hi Phil,
Another clue to failing brushes is that the IGN warning light may come on dimly at low engine revs.
It sounds like you sorted your issue by changing the brushes.
Cheers,
Mike.
Another clue to failing brushes is that the IGN warning light may come on dimly at low engine revs.
It sounds like you sorted your issue by changing the brushes.
Cheers,
Mike.
(South Oxfordshire)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)
Re: Alternator issues
Yes, thanks Mike.
Had a good run and test today prior to picking up the granddaughters, this was probably the issue when I bought a new battery earlier this year......
Had a good run and test today prior to picking up the granddaughters, this was probably the issue when I bought a new battery earlier this year......
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