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Old 10-07-2012, 08:18 PM   #1
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Drive plate

I was taking a look at the propshaft coupling a couple of days ago I noticed a sprinkling of black grains on the transmission kind of like a dose pepper from a shaker. The Cummins and ZF transmission are painted white otherwise I am sure I would have missed it. I am thinking, but not sure, this is associated with the normal wear and tear of the drive plate inside the "bell housing" what do you folks say?
Thanks in advance!
Steve W
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Old 10-08-2012, 12:58 AM   #2
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Black Crumbles

When I had those crumbles on the engine and air intake, I traced the source to the belt pullies. The rust on the pullies were sanding material off the belts, which was being flung around the engine room.

Later, I had an alternator fail. I discovered that it was full of melted black rubber from the belt. The rubber coated the inside of the alternator, causing it to overheat and burn up.
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Old 10-08-2012, 06:19 AM   #3
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The simplest way to loose an alternator is a loose belt.

The slipping belt heats the pulley , which passes the heat to the front bearing, the lubricant runs out , the bearing dies.

Take off your existing alt , duplicate it and bolt the new duplicate on.

Your old operating unit goes in a plastic bag , and then into the box the new unit came in.

Spare mounting and adjusting bolts are never a bad idea.
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Old 10-09-2012, 08:40 AM   #4
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On closer inspection yesterday I found that the material was tiny rust grains that shed from a bracket on the housing /transmission, that made my day!
Thanks to those who replied
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