Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


Previous Thread
Next Thread
Print Thread
Rate Thread
#391683 07/04/17 04:01 PM
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
The other day I tried a section of road that had just been repaved. I was blistering along at 55 when the amp gauge centered itself. I thought that that fancy diode cutout had just done its job. After a while it started to show a discharge. I remembered the last time I had charging issues the resistor on the switch had burned out. It was that again. Any ideas?


Best Regards, Pat
Filling Station - Chevrolet & GMC Reproduction Parts


Filling Station


Joined: Nov 2001
Posts: 29,847
Tech Advisor
ChatMaster - 25,000
Offline
Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,847
When you were driving at 55 how many charging amps was the amp meter showing when the generator was working?

laugh wink beer2


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
It was right at the top if I remember well.


Best Regards, Pat
Joined: Nov 2001
Posts: 29,847
Tech Advisor
ChatMaster - 25,000
Offline
Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,847
Right at the top???? Do you mean 20 amps charge? If so, your generator output was way too high so you might have burned out the generator armature. Your generator should be charging no more than 10 amps max.

laugh wink beer2


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
I'll check that again. Is it possible that third brush has moved?


Best Regards, Pat
Joined: Nov 2001
Posts: 29,847
Tech Advisor
ChatMaster - 25,000
Offline
Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,847
If the third brush was tightened down, it probably didn't move.

laugh wink beer2


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
Towards the block is down right?


Best Regards, Pat
Joined: Nov 2001
Posts: 29,847
Tech Advisor
ChatMaster - 25,000
Offline
Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,847
Towards the block decreases the output and towards the fender increases the output. Check your shop manual.

laugh wink beer2



The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
I think I've got it. This is at fast idle with the choke on.

[Linked Image from i1176.photobucket.com]

Last edited by Pat S; 07/05/17 11:10 AM.

Best Regards, Pat
Joined: Nov 2001
Posts: 29,847
Tech Advisor
ChatMaster - 25,000
Offline
Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,847
Driving down the road at 55, the max. output should be about 10 amps.

So, what did you do to correct the issue.....re-adjust the third brush?

laugh wink beer2


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
Yup.


Best Regards, Pat
Joined: Nov 2001
Posts: 29,847
Tech Advisor
ChatMaster - 25,000
Offline
Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,847
Is the screw that holds the third bush in place now tight?

laugh wink beer2


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
It is and it was. I guess I hadn't set it low enough the last time.


Best Regards, Pat
Joined: Jan 2002
Posts: 1,869
Pat S Offline OP
ChatMaster - 1,500
OP Offline
ChatMaster - 1,500
Joined: Jan 2002
Posts: 1,869
Found out today that this episode had boiled the battery, or perhaps it had been boiling for a while. Anyhow with a new battery, charging at 10 amps I should make it through the summer OK.


Best Regards, Pat
Joined: Nov 2001
Posts: 29,847
Tech Advisor
ChatMaster - 25,000
Offline
Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,847
Good Luck!

laugh wink beer2


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"

Link Copied to Clipboard
Support The VCCA!

Enjoy the forum? Become a VCCA member! The World's Best Chevrolet and GMC Club!


Member Photos
1964 Chevrolet Impala SS
1964 Chevrolet Impala SS
by DreamChevy, February 17
My 1933 Chevy 2 Dr. Sedan
My 1933 Chevy 2 Dr. Sedan
by 1939Chevy1, November 24
Back on the road 79 years later
2 1927 Chevrolet Trucks
2 1927 Chevrolet Trucks
by 1927TRUCKS, June 7
Who's Online Now
1 members (ScottCrawford), 63 guests, and 23 robots.
Key: Admin, Global Mod, Mod
Newest Members
Jayhicks, Tomvanhouten, Dads29Chevy, Tractorman, JEC51
18,307 Registered Users
Today's Birthdays
aristech, RalphL, tonysk
Forum Statistics
Forums58
Topics59,069
Posts429,046
Members18,307
Most Online1,133
Jan 22nd, 2020
 

Notice: Any comments posted herein do not necessarily reflect the official position of the VCCA.

Powered by UBB.threads™ PHP Forum Software 7.7.5