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Thread: Need help with oil pump on 112 grader

  1. #11
    Join Date
    Aug 2013
    Location
    Saskatchewan
    Posts
    19

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    It's just there to throw oil up on the crank or sleeves. Does anyone have any idea why it's there? I thought maybe for steep slopes but dozer goes on steep slopes too

  2. #12
    Join Date
    Jan 2007
    Location
    long island NY, Hancock Ma
    Posts
    2,311

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    curtward----my D2 has a lower sump in the forward part of the oil pan with a secondary pickup tube--so when it goes down a steep slope it picks up the oil for lubrication, going up a steep slope is not a problem as the oil flows to the rear of the oil pan and the main pickup suffices
    Cat 941B, Cat D2 4U, Cat D3B, Cat D4 7U, Cat D6 9U

  3. #13
    Join Date
    Aug 2013
    Location
    Saskatchewan
    Posts
    19

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    Now that I seen old magnets reply makes me think and feel like an idiot. The d4 dozer engine is definitely an early one. (I own 4 of them and can tell by some of the small things that have been changed) that would make sense been a balancer. So I'm screwed? Or could I look for a earlier flywheel

  4. #14
    Join Date
    Nov 2006
    Location
    Corralitos, Ca.
    Posts
    14,523

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    Look for parts from a 3U prior to s/n 3U3332 when the balancer was added.

  5. #15
    Join Date
    Aug 2013
    Location
    Saskatchewan
    Posts
    19

    Default

    Anyone have a part# for that flywheel? Or any leads where I'd find one?

  6. #16
    Join Date
    Nov 2006
    Location
    Corralitos, Ca.
    Posts
    14,523

    Default

    Flywheel assy. part number for the 3Uxxxx is a 4F1768

  7. #17
    Join Date
    Jul 2016
    Location
    Lancaster CA
    Posts
    551

    Default

    machinery trader.com/parts/search/? Has 12 parts dealers with 4F1768
    Cat 12 grader, 8T6995 running and restoring, Cat 12 grader 9K3585. parts machine, Adams leaning wheel Pull grader Mod # 22, ser#438

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