I bought a new 2019 389 and it has a driveline vibration between 55-65 mph. It's worse when you decelerate. It's got the 2050 torque drive line spl250 spicer. I noticed the intermediate shaft is 3 or 4 notches out of time but after looking at others it seems they come this way. I believe they should have used 2 hanger shafts instead of 1 cause the 2 shafts in the truck are super long.
The throw out bearing is also making a bad grinding squealing noise when double clutch so I shot some grease in it with no change.
I was wondering if anyone else has experienced these issues with there new 389.
I got it at Peterbilt dealer for them to figure it out under warranty.
2019 389 driveline vibration
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by jake744, Aug 12, 2018.
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Vibrations at that speed can be wheel end related.
Wheel miscounted, tire, rim, brake drum out of round.KB3MMX Thanks this. -
KB3MMX Thanks this.
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Now got to figure out why throw out bearing sounds like #### when you double clutch. Man I would hate for them to pull my transmission on my new truck with 1,000 miles on it.KB3MMX Thanks this. -
iam an owner operator by the way with a 379 -
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speedyk Thanks this.
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