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Cat 2ws issue

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by WREN, May 1, 2021.

Page 2 of 4
  1. May 2, 2021 #11
    WREN

    WREN Medium Load Member

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    @LameMule yes the crankcase tube. The blowby doesn't look that bad but it's definitely oily under there. I haven't held it at 1800 in neutral yet.
     
    WREN, May 2, 2021
    WREN, May 2, 2021
    #11
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  3. May 7, 2021 #12
    WREN

    WREN Medium Load Member

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    Jul 17, 2017
    Florida panhandle
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    Ok, check all injectors and they seem to be fine. Checked all 3 ujoints and replaced 1 questionable one. 1800 rpms in neutral feels fine.

    Still has the violent shake in 5th and some in 6th. If I really ease the rpms in 5th it's not bad at all, but it has to be real easy.

    All drive tires need replaced, but that wouldn't cause a violent shudder in just one gear I dont think
     
    WREN, May 7, 2021
    WREN, May 7, 2021
    #12
  4. May 7, 2021 #13
    Bean Jr.

    Bean Jr. Road Train Member

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    Does it do it at the same speed in a different gear?
     
    Bean Jr., May 7, 2021
    Bean Jr., May 7, 2021
    #13
    AModelCat Thanks this.
  5. May 7, 2021 #14
    LameMule

    LameMule Road Train Member

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    Might take a good look at the carrier bearing/center support as well as any slip yokes.
     
    LameMule, May 7, 2021
    LameMule, May 7, 2021
    #14
    Bean Jr. Thanks this.
  7. May 7, 2021 #15
    WREN

    WREN Medium Load Member

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    Florida panhandle
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    I'm leaning towards maybe the trans since it's those 2 gears
     
    WREN, May 7, 2021
    WREN, May 7, 2021
    #15
  8. May 7, 2021 #16
    AModelCat

    AModelCat Road Train Member

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    Doubt it. Not unless you're seeing the same issue on the corresponding gears on the low side as well since they share the same path of power through the main box.

    @Bean Jr. has a great suggestion. Help determine if speed or RPM related.
     
    AModelCat, May 7, 2021
    AModelCat, May 7, 2021
    #16
    Bean Jr. Thanks this.
  9. May 7, 2021 #17
    LameMule

    LameMule Road Train Member

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    I changed out a carrier bearing in a Toyota and re-installed the driveline out of time, the thing felt like it had square wheels.
    Sometimes things appear just fine but most certainly are not.
     
    LameMule, May 7, 2021
    LameMule, May 7, 2021
    #17
    Bean Jr. Thanks this.
  10. May 7, 2021 #18
    WREN

    WREN Medium Load Member

    378
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    Jul 17, 2017
    Florida panhandle
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    So, skipped 5th gear. 4th to high range and into first gear position and its still there
     
    WREN, May 7, 2021
    WREN, May 7, 2021
    #18
  11. May 7, 2021 #19
    John E.

    John E. Light Load Member

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    Apr 4, 2021
    New Brunswick
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    Could possibly be your Jack Shaft. They can cause nightmares also.
     
    John E., May 7, 2021
    John E., May 7, 2021
    #19
  12. May 7, 2021 #20
    WREN

    WREN Medium Load Member

    378
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    Jul 17, 2017
    Florida panhandle
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    doesn't have one
     
    WREN, May 7, 2021
    WREN, May 7, 2021
    #20
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