Agreed but ;
In use it turns out that Tungsten coating is *very* durable so cleaning it on hard to find voltage regulators is an O.K. thing to do .
Brass contacts like in starter , headlight , window and glow plug relays , must _ALWAYS_ be hand polished using metal polish .
-Nate
Bill Wrote :
I am surprised that these files are still offered. I consider them temporary or stop-gap at best.
Points have a thin flash of tungsten, or similar material, that allows them to last longer. Once this is burnt off or filed off, they'll need regular cleaning with the file to keep operating. Nate? Bill in Oregon
From: diesel_mercedes@yahoogroups.com [mailto: diesel_mercedes@yahoogroups.com ] On Behalf Of Bobby Yates Emory
Sent: Saturday, December 28, 2013 4:10 PM
To: diesel_mercedes@yahoogroups.com
Subject: R e: [diesel_mercedes] R E: BEFO R E you pitch your glow plug relay w126 w123
Amazon carries these. If you search for "point file" you will get lots of hits. The least expensive (I think) is this:
(I was surprised that R ockauto did not have them.)
Bobby
On Sat, Dec 28, 2013 at 8:54 AM, <mirakelworkre@...> wrote:
I remember the old cars with contact points in the distributor. those contacts has a special hard coating on them. Filing with something coarse would grind off that coating and they would stop working quickly. A very fine piece of sandpaper (about 600 grit) like auto body shops use was best. I always kept a piece in my glove compartment.. ALWAYS wipe the points clean with a piece of cloth afterwards so grit will not keep contacts from making contact. Electronics suppliers sold special files for contact points back in the day (very fine grit).
--
Toward freedom,
Bobby Yates Emory
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