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What’s broken? Rear differential lock is intermittent now

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by bonder45, Jan 9, 2022.

Page 1 of 2
  1. Jan 9, 2022 #1
    bonder45

    bonder45 Road Train Member

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    Well, a driver decided to throw the inner axel / power divider when the rear wheels were spinning.

    Big oaf…. *sigh*

    What exactly is broken now because the diff lock is intermittent now. Sometimes it works and other times not.

    What exactly am I looking at getting replaced?
     
    bonder45, Jan 9, 2022
    bonder45, Jan 9, 2022
    #1
    Brettj3876, D.Tibbitt and singlescrewshaker Thank this.
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  3. Jan 9, 2022 #2
    singlescrewshaker

    singlescrewshaker Road Train Member

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    The driver
     
    singlescrewshaker, Jan 9, 2022
    singlescrewshaker, Jan 9, 2022
    #2
    jsnell, pup, S M D and 11 others Thank this.
  4. Jan 9, 2022 #3
    bonder45

    bonder45 Road Train Member

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    Well I knew that, he’s now fired.
     
    bonder45, Jan 9, 2022
    bonder45, Jan 9, 2022
    #3
    D.Tibbitt, singlescrewshaker and LameMule Thank this.
  5. Jan 9, 2022 #4
    bad-luck

    bad-luck Road Train Member

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    Sounds like the power divider is damaged
     
    bad-luck, Jan 9, 2022
    bad-luck, Jan 9, 2022
    #4
    BoxCarKidd, D.Tibbitt and singlescrewshaker Thank this.
  7. Jan 9, 2022 #5
    bonder45

    bonder45 Road Train Member

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    I’m not familiar with rear ends - it’s something that can be pulled out of the rear end and replaced?
     
    bonder45, Jan 9, 2022
    bonder45, Jan 9, 2022
    #5
    BoxCarKidd, singlescrewshaker and D.Tibbitt Thank this.
  8. Jan 9, 2022 #6
    Nss

    Nss Light Load Member

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    Pull drain plugs and check for debris
     
    Nss, Jan 9, 2022
    Nss, Jan 9, 2022
    #6
    singlescrewshaker and D.Tibbitt Thank this.
  9. Jan 9, 2022 #7
    kwcam

    kwcam Light Load Member

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    Front diff most likely broke the ring holding the spider gears of the power divider section. can be replaced without pulling the whole diff out if not to damaged.
     
    kwcam, Jan 9, 2022
    kwcam, Jan 9, 2022
    #7
    D.Tibbitt Thanks this.
  10. Jan 9, 2022 #8
    bad-luck

    bad-luck Road Train Member

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    Baltimore, Maryland
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    The power divider is attached to the front rear. The do sell a power divider kit, however the carrier (the gears inside of the rear) may be damaged as well. The extent of the damage can only be fully determined when the rear is taken apart.
     
    bad-luck, Jan 9, 2022
    bad-luck, Jan 9, 2022
    #8
    singlescrewshaker and lwlevens Thank this.
  11. Jan 9, 2022 #9
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Personally I would just have the P/D section pulled off first and check that out.
     
    BoxCarKidd, Jan 9, 2022
    BoxCarKidd, Jan 9, 2022
    #9
    rogermunn1, lester and singlescrewshaker Thank this.
  12. Jan 11, 2022 #10
    noworrez

    noworrez Light Load Member

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    Could also pull an oil sample before complete disassembly. But what everyone else has said is spot on.
     
    noworrez, Jan 11, 2022
    noworrez, Jan 11, 2022
    #10
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