Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Checking driveline angles

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Collie, Aug 25, 2019.

Page 1 of 2
  1. Aug 25, 2019 #1
    Collie

    Collie Guest

    Want to check driveline angles in triaxle truck peterbilt.
    I will use a digital angle finder.
    What to look for and what is procedure. How many degrees is acceptable from trans to front diff. Then front diff to rear diff. Thanks you
     
    Collie, Aug 25, 2019
    Collie, Aug 25, 2019
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Aug 25, 2019 #2
    jamespmack

    jamespmack Road Train Member

    19,791
    213,287
    Mar 25, 2014
    OH
    0
    angles_semi5.jpg
     
    jamespmack, Aug 25, 2019
    jamespmack, Aug 25, 2019
    #2
  4. Aug 25, 2019 #3
    jamespmack

    jamespmack Road Train Member

    19,791
    213,287
    Mar 25, 2014
    OH
    0
    I have a better worksheet someplace
    I'll try and find it. Check spicer website. I have to use it everytime because honestly never have had to measure more than a few in my life yet.
     
    jamespmack, Aug 25, 2019
    jamespmack, Aug 25, 2019
    #3
  5. Aug 25, 2019 #4
    Collie

    Collie Guest

    aw man thanks i appreciate it
     
    Collie, Aug 25, 2019
    Collie, Aug 25, 2019
    #4
  7. Aug 25, 2019 #5
    pushbroom

    pushbroom Road Train Member

    1,777
    7,253
    Sep 1, 2012
    0
    Eaton driveline angle analyzer is the best tool, however it is 500$ or so. There is other free online calculators.
    If its a tri drive it is probably air trac. Air trac should be 4.5 on both front diffs then 9 on the rear.
    Any reasons as why you are checking angles?
     
    pushbroom, Aug 25, 2019
    pushbroom, Aug 25, 2019
    #5
    Dino soar, spsauerland, jamespmack and 1 other person Thank this.
  8. Aug 25, 2019 #6
    jamespmack

    jamespmack Road Train Member

    19,791
    213,287
    Mar 25, 2014
    OH
    0

    That's is a steep price, dont recall but I thing for about 100 bucks I bought a magnetic digital angle finder. But you have to do the math on paper.
     
    jamespmack, Aug 25, 2019
    jamespmack, Aug 25, 2019
    #6
  9. Aug 25, 2019 #7
    Goodysnap

    Goodysnap Road Train Member

    3,694
    8,948
    Jul 12, 2017
    0
    Yup ^^^^^^^^^^^^^

    Engine/trans angle is 1-2 degrees.

    Make sure you set ride height to spec before measuring angles.
     
    Goodysnap, Aug 25, 2019
    Goodysnap, Aug 25, 2019
    #7
    Dino soar and pushbroom Thank this.
  10. Aug 25, 2019 #8
    Collie

    Collie Guest

    yup air trac.
    I fiddled with my leveling valve.
    I used peterbilts printout to adjust the valve measuring ride height by measuring tire height and all that. I went off spec and my truck has always rode at 10" . Peterbilt says it should be about 11".
    11" is way to high and creates driveline noise. At 10" it is quiet. I checked it not once but twice. I even checked at the centerline of axle tube to bottom of frame to connfirm peterbilts method.
    So just checking driveline angles as well.
     
    Collie, Aug 25, 2019
    Collie, Aug 25, 2019
    #8
  11. Aug 25, 2019 #9
    Collie

    Collie Guest

    truck has lift axle. no drive. just 2 rear diffs
     
    Collie, Aug 25, 2019
    Collie, Aug 25, 2019
    #9
  12. Aug 25, 2019 #10
    pushbroom

    pushbroom Road Train Member

    1,777
    7,253
    Sep 1, 2012
    0
    Lift axle doenst matter. It gets set by itself. Truck is a tandem drive for calculation purposes.
     
    pushbroom, Aug 25, 2019
    pushbroom, Aug 25, 2019
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 2