I have 2000 379 low air leaf so this great illustration is for low air leaf on or after 4/5/04 correct? I still think 15.88 is to much thats what my book says but rtc nashville said start a 11 3/4
Peterbilt / 6NZ Vibration
Discussion in 'Trucks [ Eighteen Wheelers ]' started by jaysolomon, Sep 22, 2010.
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sorry i looked at your image again it again and it says 8.50 before 04.
hmmm dunno what to do -
it says measure from bottom of frame rail to bottom of air bag bell. so i have 15 - 16 in that.
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That .88 can make all the difference in the world. After replacing the levelingf rod on my Volvo, and putting it back in the same hole, I had a droning noise that would come and go, as well as an occasional growl out of the transmission. Lowering the suspension 1/2 inch did the trick... No more noise.
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and yes it could be the driveline too .... when you let out of it the noise goes away because there is no torque or stress going to it .... could also be in the clutch ...IE throw out bearing.
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Had the same problem took it to the shop but they could not find anything day next day same vibration but much worse come to find out bad u joint seems that the u joint was bad but needle bearing had gotten down in to end of cap and thus you could not feel any slack in u joint .
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My Question to original poster,If you put little pressure on the clutch pedal under load ,do you still feel the vibration? if not change the spring -
the vib i get is going down road with or without load. if i turn wheel to left very little it does it and if i cut back to right it stops.
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if you have an 18 speed its your input shaft is worn
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