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Heavy Duty Diesel Truck Mechanics Forum

For mechanics and owners of shops servicing semi trucks and Class 7-8 vehicles. Repairs, troubleshooting and business advice.

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  1. pushbroom

    Cat Wiring Diagrams

    pushbroom, Jan 13, 2019 ... 2 3
    Replies:
    27
    Views:
    35,131
    Greenlee63
    Feb 13, 2024
  2. pushbroom

    Cummins Wiring Diagrams

    pushbroom, Nov 20, 2019 ... 2
    Replies:
    15
    Views:
    36,522
    gthompson97
    Sep 26, 2023
  3. pushbroom

    Detroit Wiring Diagrams

    pushbroom, Jan 8, 2020 ... 2 3
    Replies:
    25
    Views:
    38,037
    Keepforgettingmypassword
    Sep 14, 2023
  4. Htoric2008

    High oil pressure 120

    Htoric2008, Aug 23, 2013 ... 2
    Replies:
    19
    Views:
    28,424
    lwlevens
    Mar 2, 2022
  5. Guntoter

    Need help understanding "New" codes in Paccar engine.

    Guntoter, Jul 26, 2015 ... 19 20 21
    Replies:
    205
    Views:
    151,523
    Noremorse
    Apr 21, 2022
  6. Ozdriver

    Impossible to find air leak

    Ozdriver, Feb 8, 2017 ... 7 8 9
    Replies:
    88
    Views:
    33,288
    Lowboy456
    Oct 27, 2020
  7. Andreybanyuk

    ISX 15 Knocks under load

    Andreybanyuk, Feb 26, 2017 ... 2 3 4
    Replies:
    31
    Views:
    18,530
    daf105paccar
    Jul 5, 2018
  8. BIEDERMONKEY

    Bad Torque Vibration

    BIEDERMONKEY, Mar 3, 2017 ... 2 3
    Replies:
    28
    Views:
    11,967
    Ironhorse945
    Apr 28, 2019
  9. Hogleg

    Old Style 3 line Vickers PS system

    Hogleg, Mar 8, 2017
    Replies:
    3
    Views:
    867
    BoxCarKidd
    Mar 8, 2017
  10. mitmaks

    Cummins ISX15 crankcase pressure

    mitmaks, Mar 11, 2017 ... 2 3 4
    Replies:
    34
    Views:
    63,963
    LibertyFreight
    Jan 12, 2020
  11. Alex88

    Knocking noise under dash Volvo 780 2017

    Alex88, Mar 12, 2017 ... 2
    Replies:
    14
    Views:
    5,626
    RoadtoEmmaus
    Mar 1, 2019
  12. HopeOverMope

    N14 Diesel in oil? Don't count the fuel pump out

    HopeOverMope, Mar 12, 2017
    Replies:
    9
    Views:
    9,304
    Rideandrepair
    Dec 10, 2018
  13. Capital G

    Coolant abnormally passing to overflow reservoir

    Capital G, Mar 12, 2017
    Replies:
    9
    Views:
    2,593
    strollinruss
    Mar 12, 2017
  14. WyoVac

    3406E Tu-flo 550 coolant flow reroute

    WyoVac, Mar 12, 2017 ... 2
    Replies:
    15
    Views:
    3,261
    WyoVac
    Mar 20, 2017
  15. Admin

    New Forum: Diesel Mechanics

    Admin, Mar 14, 2017 ... 2
    Replies:
    14
    Views:
    2,347
    Heavyd
    Mar 20, 2017
  16. Jimbo2020

    Buzzer forewarning fault

    Jimbo2020, Mar 15, 2017
    Replies:
    0
    Views:
    652
    Jimbo2020
    Mar 15, 2017
  17. cnsper

    Ddec ll programming info needed

    cnsper, Mar 15, 2017
    Replies:
    6
    Views:
    2,160
    Oldironfan
    Jun 25, 2018
  18. JJones205

    94' FLD120 yellow dash lights??

    JJones205, Mar 15, 2017
    Replies:
    1
    Views:
    6,862
    Ristow
    Mar 27, 2017
  19. Nicholaska

    Engine loads up with Raw fuel at idle

    Nicholaska, Mar 15, 2017
    Replies:
    4
    Views:
    7,971
    maggard359
    Mar 16, 2017
  20. free2fly973

    Borg warner s400?

    free2fly973, Mar 16, 2017
    Replies:
    1
    Views:
    1,431
    swaan
    Mar 20, 2017
  21. newfdrvr

    Power steering lines over heating

    newfdrvr, Mar 16, 2017
    Replies:
    9
    Views:
    6,969
    jamespmack
    Mar 19, 2017
  22. cannoncooper

    09 Workstar Maxxforce 10, Parked Regen

    cannoncooper, Mar 16, 2017
    Replies:
    7
    Views:
    2,152
    cannoncooper
    Mar 17, 2017
  23. sloride49

    air to air on 2007 freightliner

    sloride49, Mar 17, 2017
    Replies:
    0
    Views:
    553
    sloride49
    Mar 17, 2017
Showing threads 1 to 20 of 8,716

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