Generator - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Garage - Tools
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 06-07-2010, 09:22 AM
johnsongrass1's Avatar
Race it, Don't rice it!
Last photo:
Join Date: Jul 2002
Location: Columbia, Mo
Age: 40
Posts: 5,905
Wiki Edits: 0

Thanks: 52
Thanked 402 Times in 328 Posts

I have a US General brand generator given to me that doesn't generate electricity. The engine runs well. At full running RPM I get no power reading at the recepticals. What other checks can I do to get an idea what wrong with it?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 06-07-2010, 05:31 PM
oldschoolrods's Avatar

Last journal entry: Engine Compartment
Last photo:
Join Date: Dec 2003
Location: Lancaster, Pennsylvania
Age: 31
Posts: 806
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The best test to try is flashing the field. Take off the back cover (before doing this take a peak at the windings just to make sure nothing is obviously toasty) then take the leads off the brushes and secure them out of the way, put a set of temporary leads on. The positive brush is usually the one closest to the bearing. Start the engine and then hook your leads to a battery. The generator should come up to close to full voltage. If it does there is a problem in your excitation circuit. Could be a capacitor or a voltage regulator or another problem (hard to say off the top of my head with no print). If it doesn't make voltage while flashing the field then you have a problem with your rotor or your windings. You can check the rotor with an ohm meter slip ring to slip ring.

This applies to brush type, if you have diodes in your rotor one of those could of failed. However they can't be tested in circuit and have to be de-soldered which is kind of a pain so it's best to try and eliminate other stuff first.

If you need any more help feel free to PM me I'm a generator technician by trade.

Good luck and hope that helps

Reply With Quote Quick reply to this message

Recent Garage - Tools posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
AC Generator Problem Torque454 Garage - Tools 8 11-30-2013 08:07 PM
24v jeep generator skeeveman Electrical 5 09-12-2007 03:53 PM
Chevy Alternator from Generator ddove1972 Electrical 5 09-05-2007 03:17 PM
54 Chevy Generator Problems..? Flaco54 Electrical 10 04-09-2007 03:43 PM
Generator trouble barkingspider Electrical 9 01-20-2007 05:45 PM

All times are GMT -6. The time now is 11:23 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.