| Noise Suppression Capacitor on Blower [message #162450] |
Thu, 08 March 2012 01:33  |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
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Hi All electronics gurus:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=43101&title=bad-connection-2&cat=6030
This is the Noise suppression Capacitor from my Blower motor wiring harness. The harness(or single wire in this case)part number is: 8913700. The capacitor is called a feed through capacitor in the wiring diagram. I'm assuming "feed through" means that the positive electrolytics are wound radially around a conductor that goes through the centre of the capacitor. The Case then is connected to the negative electrolytics and grounded. The fact that the wire is actually a part of the manufacture of the capacitor by going through the centre of the capacitor it has a robust mechanical connection to the electrolytics, and as pigtails they will tolerate more vibration.
As you can see I have a large number of strands broken on each side of this capacitor which is leading to a large voltage drop at the blower and heating at the capacitor and wires.
My Questions:
I suspect A simple repair might be to cut and solder the wires to each side of the capacitor, However: if the wire originally was actually part of the manufacture of the capacitor and a pigtail, the solder joint will be a poor option and wires will break again anyway (There is no good mechanical connection to establish first) What do you think?
Related to this is: Why would the capacitor really need to be feed through and not simply a capacitor to ground (It is anyway.)? Which Links to the next question:
As part of this repair, I would like to increase the wire size to the blower by at least 2 gauges. Basicly the next size larger. Could I simply solder a pigtail onto one end of the capacitor and connect it into the new wire and ground? (Like many other noise suppression capacitors. If not, is there a better size of capacitor that will do this same thing.
Best Regards
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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