Re: H 4 mag coil

Posted by Bob on July 23, 2006 at 13:11:13 from (64.21.249.40):

In Reply to: Re: H 4 mag coil posted by Bob on July 23, 2006 at 13:05:54:

GOOD GRIEF...

I tryed backing ip to correct several "typos", and posted the message THREE TIMES.

Here's the corrected version:

YES, it should "beep". NO, it does not indicate a bad coil.

With the breaker points OPEN, the coil's primary winding is connected to ground at one end, and the points/condensor at the other end, so the meter WILL show conductivity to ground, through the coil's primary winding, to ground.

It is IMPOSSIBLE to accurately evaluate the condition of a coil with an Ohmmeter. Yes, an Ohmmeter will catch a DEAD short, but even one shorted turn in one of the coil's windings will greatly reduce spark output.

Coil are tested with a machine that RINGS them with an AC current, and displays the condition of the coil depending upon how it RINGS (oscillates).

Think of a "good" coil as a bell that rings brightly when struck.

A "bad" coil is much like a cracked bell that gives a dull "thud" when struck, instead of a bight note. A shorted or partially shorted coil acts the same way, electrically, and that is what the coil teater displays as coil condition.

Replies:

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]