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Rough weekend for a cruise

Started by Cadillac Jack 82, October 11, 2015, 11:25:22 AM

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Dan LeBlanc

Walter is on the money.  Before attempting to adjust anything, measure the voltage at the battery with the car running.  You'll find that generators have very little, if any output at idle, so you'll want to be slightly off idle and rev the engine slightly to see where it's at.  You may find that you don't need to adjust anything.

The test you conducted puts the generator at its full output.  You're not measuring the actual regulated voltage of the system that way.
Dan LeBlanc
1977 Lincoln Continental Town Car

Cadillac Jack 82


Walter:

    Yes I need a shop manual but until I get one I'm going to have to rely on the advice of others.  The generator I bought was marked as a rebuilt 1964 Impala rebuilt generator online.  Its a mark for mark identical copy of the one I pulled off my car.  I pulled out the old generator and slid the new one in without any issues.    I'll have a better idea of whats going on when I get home.  I have all the tools to address this I just want to make sure I do it right.
Tim

CLC Member #30850

1959 Cadillac CDV "Shelley"
1964 Cadillac SDV "Rosalie"
1966 Oldsmobile Toronado "Sienna"

Past Cars

1937 LaSalle Cpe
1940 Chevrolet Cpe
1941 Ford 11Y
1954 Buick 48D
1955 Cadillac CDV
1955 Packard Clipper
1957 Cadillac Series 62
1962 VW Bug
1962 Dodge 880
1966 Mercury Montclair
1967 Buick Wildcat Convertible
1968 Chevy Chevelle SS
1968 Plymouth Barracuda
1977 Lincoln MKV

Cadillac Jack 82


Dan:

    Okay cool thanks man.  I was just worried when I had the faint glow of my GEN when at acceleration and when in park.
Tim

CLC Member #30850

1959 Cadillac CDV "Shelley"
1964 Cadillac SDV "Rosalie"
1966 Oldsmobile Toronado "Sienna"

Past Cars

1937 LaSalle Cpe
1940 Chevrolet Cpe
1941 Ford 11Y
1954 Buick 48D
1955 Cadillac CDV
1955 Packard Clipper
1957 Cadillac Series 62
1962 VW Bug
1962 Dodge 880
1966 Mercury Montclair
1967 Buick Wildcat Convertible
1968 Chevy Chevelle SS
1968 Plymouth Barracuda
1977 Lincoln MKV

Dan LeBlanc

Quote from: 57shark82 on October 16, 2015, 01:14:28 PM
Walter:

    Yes I need a shop manual but until I get one I'm going to have to rely on the advice of others.  The generator I bought was marked as a rebuilt 1964 Impala rebuilt generator online.  Its a mark for mark identical copy of the one I pulled off my car.  I pulled out the old generator and slid the new one in without any issues.    I'll have a better idea of whats going on when I get home.  I have all the tools to address this I just want to make sure I do it right.

I may be wrong, but I believe by 1964 Chevrolet was using an externally regulated alternator, not a generator.  I know my 1963 Impala had an externally regulated alternator originally and was converted over to an internally regulated one when it left a previous owner stranded.
Dan LeBlanc
1977 Lincoln Continental Town Car

Walter Youshock

Mine is going for a rebuild tomorrow.  Just had time to look at it during lunch.  It is model 1102099, non air, 30 amp.  If your Delco tag has a different model number...

What's the number of the broken one?

Generator regulator:  air gap .075
Current amp setting:  32

Cut out relay:  air gap .020
Points open: .020
Close at 11.8 to 13.5 v
Adjust to 12.8

Voltage reg:
Air gap:  .075
Volt range:  13.8 to 14.8
Adjust to 14.2

Do yourself a favor:  miss the show or go as a spectator.
CLC #11959 (Life)
1957 Coupe deVille
1991 Brougham

Cadillac Jack 82


Walter:

    Thanks for the specs but I have a feeling I'll be alright.  I'm getting to learn this car but like all old cars they're pretty much the same although they have their different quirks.  I'm really hoping that its just the fact I took my readings from the generator.

    Honestly I'm the type that'll do whatever it takes to get to a show.  I've already paid registration...meeting up with 5 guys and their rides...so failure is not an option for me
Tim

CLC Member #30850

1959 Cadillac CDV "Shelley"
1964 Cadillac SDV "Rosalie"
1966 Oldsmobile Toronado "Sienna"

Past Cars

1937 LaSalle Cpe
1940 Chevrolet Cpe
1941 Ford 11Y
1954 Buick 48D
1955 Cadillac CDV
1955 Packard Clipper
1957 Cadillac Series 62
1962 VW Bug
1962 Dodge 880
1966 Mercury Montclair
1967 Buick Wildcat Convertible
1968 Chevy Chevelle SS
1968 Plymouth Barracuda
1977 Lincoln MKV

Cadillac Jack 82


Also the generator I have is another rebuilt one and its an exact copy of the one I pulled off so maybe it was done by the same company.  I'm 100% sure that it was a bearing failure that killed the last one.  I also peaked inside and the brushes look old and worn (from the old unit).  I guarantee the last one failed due to wear and age.
Tim

CLC Member #30850

1959 Cadillac CDV "Shelley"
1964 Cadillac SDV "Rosalie"
1966 Oldsmobile Toronado "Sienna"

Past Cars

1937 LaSalle Cpe
1940 Chevrolet Cpe
1941 Ford 11Y
1954 Buick 48D
1955 Cadillac CDV
1955 Packard Clipper
1957 Cadillac Series 62
1962 VW Bug
1962 Dodge 880
1966 Mercury Montclair
1967 Buick Wildcat Convertible
1968 Chevy Chevelle SS
1968 Plymouth Barracuda
1977 Lincoln MKV

Cadillac Jack 82


All fixed!  Patience is a virtue and it paid off tonight!  Slowly adjusted my voltage regulator and I'm at 12.35-12.40 volts with all accessories on (radio, heat, lights).  When all accessories are off I hit up to 13.10 but it really doesn't go higher than 13.22 or so when at 2500-3000 rpms.  Thanks for all the help fellas.  Maybe I will see some of you tomorrow.  I'll be cruising in with 2 1954 Buicks, a 1959 Lincoln, and a nice 1956 Cadillac!
Tim

CLC Member #30850

1959 Cadillac CDV "Shelley"
1964 Cadillac SDV "Rosalie"
1966 Oldsmobile Toronado "Sienna"

Past Cars

1937 LaSalle Cpe
1940 Chevrolet Cpe
1941 Ford 11Y
1954 Buick 48D
1955 Cadillac CDV
1955 Packard Clipper
1957 Cadillac Series 62
1962 VW Bug
1962 Dodge 880
1966 Mercury Montclair
1967 Buick Wildcat Convertible
1968 Chevy Chevelle SS
1968 Plymouth Barracuda
1977 Lincoln MKV

Glen

To a point I disagree with Walter and Dan.  The problem is the battery acts as a ballast and pulls the voltage down to its own level so the voltage reading will be more what the battery is charged to than the charging voltage.  If you have 15 volts at the generator and a lower voltage at the battery you have resistance in the wiring and the battery is drawing significant current with the accompanying voltage drop in the wire.   To get a proper measurement you need to let the battery charge up and the charging current to drop down to almost nothing.  But that won’t happen if the voltage too high.  In a circuit with high current flow the most accurate measurement of the source voltage would be at the source. 
My recommendation is to do a preliminary adjustment of the voltage regulator measuring at the generator and after the battery has stabilized check the voltage again.   If the battery is properly charged the voltage at the battery and the generator will be the same.  Any change in the adjustment will need some time for the battery to adjust itself
Glen Houlton CLC #727 
CLCMRC benefactor #104