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Old 09-20-2016, 02:48 PM   #1
Mini-Skoolie
 
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Location: Hendersonville, TN
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Year: 1997
Coachwork: Thomas
Chassis: 1T8
Engine: Cummins 5.9
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5.9 Cummins Tach stuck

Well, Cummins is new to me. 1997 Thomas. The tach is stuck in a position that it doesn't move. Any ideas?
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Old 09-20-2016, 03:44 PM   #2
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Join Date: Jul 2014
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Year: 1998
Coachwork: Bluebird
Chassis: TC2000 RE
Engine: 8.3l Cummins
Rated Cap: 78
The tachometer is driven off the alternator terminal (usually "w") and is not mechanical. Look to see if the electrical connection still works, or maybe the gauge is dead.
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Originally Posted by TN Redneck View Post
Well, Cummins is new to me. 1997 Thomas. The tach is stuck in a position that it doesn't move. Any ideas?
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Old 09-21-2016, 07:38 PM   #3
Mini-Skoolie
 
Join Date: Sep 2016
Location: Hendersonville, TN
Posts: 40
Year: 1997
Coachwork: Thomas
Chassis: 1T8
Engine: Cummins 5.9
Rated Cap: Dunno, big though.. Hauls
So if my alternator didn't work, the tach wouldn't either? Might have a charging problem...
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Old 09-21-2016, 10:44 PM   #4
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This may or may not apply. I've had luck with stuck meters being re set by using a powerful magnet to sweep the meter back into the zero position. A strong magnetic field will do the trick without even removing the gauge from the dash.

Jack
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Old 10-06-2016, 12:45 PM   #5
Mini-Skoolie
 
Join Date: Sep 2016
Location: Hendersonville, TN
Posts: 40
Year: 1997
Coachwork: Thomas
Chassis: 1T8
Engine: Cummins 5.9
Rated Cap: Dunno, big though.. Hauls
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Originally Posted by ol trunt View Post
This may or may not apply. I've had luck with stuck meters being re set by using a powerful magnet to sweep the meter back into the zero position. A strong magnetic field will do the trick without even removing the gauge from the dash.

Jack
Well, changed out the alternator, and no luck. Going to try the magnet trick, if that don't work, guess I need a new tach. Don't want to travel without one.

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