At 06:11 AM 1/10/2015, eric@megageek.com wrote:
>The failure mode was the typical 'loud click, no starter motor movement.
>Battery and charging system was completely checked.
Eric
That is indicative of the burned contacts on the starter
solenoid. The solenoid
is pulling the plunger in, but when the connecting plate hits the "nonburned"
contact, it doesn't touch the "burned" contact. So no power is supplied to the
motor.
>Also, I found out that he had just replaced the pos battery terminal about 2
>weeks prior because it was so corroded. I'm guessing the failing connector
>caused a 'arc' condition in the solenoid.
The battery post failure had nothing to do with the solenoid contact
failure. I've
seen the solenoid contact failure on many different vechiles that
didn' have battery
post clamp issues at the same time. In fact this is the 1st time
I've heard of any
kind of battery/post/cable failure at the same time as the solenoid contact.
It's just usage. Don't know if you remember in the older cars with
distributors and
points, there was a "condenser" / capacitor placed across the
points? This was to
reduce the sparking and errosion of the point. Unfortunately, the
solenoid doesn't
have a capacitor accross it, and because of the starter pulls a lot
more current
than there is across the points. So it's bound to happen.
Many car manufactures sell the contacts for about $12 - 25 and you can usually
replace them yourself. However, for the car repair shop, they just
replace the
hole kitten-cupoodle as it is cheaper. The starter has to come out
either way.
Then you'll pay almost as much to have a mechanic to replace the contact as
the starter costs. What a bummer. But on the good side, you've got all new
innards - bearings, etc.
John
John T. Blair WA4OHZ email: jblair1948@cox.net
Va. Beach, Va Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1106)
75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/www/morgan
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