12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

slippde timing?

Old Jun 8, 2009 | 08:21 AM
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BAD ASS RAM's Avatar
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Default slippde timing?

could someone explain how the timing slips,i was told it is gear to gear,never seen how it works,thanks.
 
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Old Jun 8, 2009 | 09:16 AM
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I believe the timing slips because they did not torque the nut enough at the factory.
 
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Old Jun 8, 2009 | 09:17 AM
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yeah but what slips,if it was gear to gear and they are keyed i don't see how it slips.i know it does i hear about it all the time,i just would like to know what happens.
 
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Old Jun 8, 2009 | 09:22 AM
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the pump gear is run by the cam gear ... but the pump gear is a tapered fit over the pump shaft meaning its pressed on by the lock washer and nut there is a keyed slot but its not keyed. once the gear is pressed on by the nut it should not slip unless it has oil or dirt on the pump shaft before the gear was put on or the nut was not torqued to the 150 ft/lbs its supsoed to be.
 
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Old Jun 8, 2009 | 09:24 AM
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^^^^ The technical explanation.... ^^^^
 
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Old Jun 8, 2009 | 09:25 AM
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Originally Posted by Dr. Evil
^^^^ The technical explanation.... ^^^^
figured thats what he wanted
 
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Old Jun 8, 2009 | 09:35 AM
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thanks,that's exactly what i wanted,yall guys are great
 
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Old Jun 8, 2009 | 10:30 AM
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i know if you dont clean the pump shaft really good it will slip as well
 
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Old Jun 8, 2009 | 11:04 AM
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Yes, the pump shaft must be cleaned with brake cleaner or electric contact cleaner before torquing....or it will slip.
 
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Old Jun 8, 2009 | 11:14 AM
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brake clean works very well
 
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