Shifting a freightliner century

Discussion in 'Trucking Schools and CDL Training Forum' started by Luke700, Jan 11, 2021.

  1. Luke700

    Luke700 Bobtail Member

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    new driver here for me the hardest gears are 1-5 why is it when I’m in gear the truck be shaking so much ? What’s the best advice for shifting those lower gears? Best rpm etc etc 14L Detroit
     
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  3. LDLWells

    LDLWells Heavy Load Member

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    If the truck is shaking it's called a freightshaker for a reason. Are you lugging the engine?

    What's the rpm when it's shaking?
     
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  4. Luke700

    Luke700 Bobtail Member

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    Yeah think I’m lugging it sometimes ill have to go into 4th instead of 3rd I guess because my speed is too high for 3rd i don’t know. How fast are you suppose to shift those lower gears
     
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  5. LDLWells

    LDLWells Heavy Load Member

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    Depends on the transmission. I'll assume ten speed. If I remember right and I probably don't those Detroit 60s liked a little higher rpm. Don't upshift when you're at 1300, bump it up to 17 or 18
     
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  6. Luke700

    Luke700 Bobtail Member

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    Yeah 10 speed. Alright I’ll give it a try thanks
     
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  7. Brandt

    Brandt Road Train Member

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    Don't shift at high RPMs you will never get it in gear. You want the exact opposite. You shift at 1,000 RPMs or less, in low range. You do this because you don't have to match the gears and it stop all that shaking. You don't need 500HP to get rolling from a stop.
     
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  8. Luke700

    Luke700 Bobtail Member

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  9. truckdriver31

    truckdriver31 Road Train Member

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    why you shifting less then 3rd anyway. you can start off higher. the jerking is from you starting off too low
     
  10. truckdriver31

    truckdriver31 Road Train Member

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  11. HiramKingWilliams

    HiramKingWilliams Medium Load Member

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    On flat ground.....my rig likes 1,300-1,500 for gears 1-6, and 1,500-1,600 for 7th. 8th-10th aren’t as picky.
     
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