[Farmall] Farmall not starting---still!

[szabelsk at gdls.com]

Assuming that you are supposed to have 6v at the points and not 12v (???), 
the only way you would have 12v is if the resistor is shorted out. Are you 
sure it's in the circuit properly? Are the resistor leads touching 
together or are both touching some thing else? Normally I put a small 
piece of insulation sleeving on each lead (assuming you have a resistor 
with leads) to ensure they don't short out. If the resistor is open 
circuited, you should get nothing at the points.

Have you checked to make sure the points are not shorted? You could be 
getting voltage to the points going right to ground instead of through the 
points.

The condenser is actually a capacitor rated at a higher value than what it 
is intended to be used for, however they can short out internally without 
any visual sign. The condenser's main job is to build up a charge and 
release that charge at the right time to provide the higher power you need 
for the ignition system. The release is triggered by the opening/closing 
of the points. Think of it as another power source for your ignition 
system. 

As far as the coil(s) it should not be damaged.  You can check them by 
doing resistance measurements.

Carl Szabelski





ebony51 at frontiernet.net 
Sent by: farmall-bounces at lists.antique-tractor.com
08/03/2009 11:29 AM
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Kirk Rinne <krinne at windstream.net>
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Re: [Farmall] Farmall not starting---still!






Okay, I tried something else.  I put my voltmeter on and I am getting 12+ 
volts running from the coil to the points.  Now, I would have thought the 
resister was supposed to take that down to 6 volts.  So, do I have a bad 
resister?  And would that have friend my coils (both of them)?  And would 
it have damaged the condenser?

Larry



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