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Thread: Freelander big end bearing help

  1. #1
    Join Date
    Sep 2006
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    WA
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    Freelander big end bearing help

    Hi all,
    I am posting this for a work friend. He purchased a Freelander with the 1.8, 16V motor and has found that the motor has done a big end bearing. It looks like this poor motor never had an oil change in it's life.

    My question is where can he get new big ends from ? I've spoken to a couple of shops and the insist there is a blue/red/yellow dot on the bearing that tells me what it is. All there is on the bearing is a stamped G D then DD then the number LFB10023/Y

    Does the letter Y relate to Yellow ?

    Cheers,

    Peter

  2. #2
    Join Date
    Oct 2009
    Location
    Hunter Valley
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    Here is the procedure to check bearing selection on big ends

    1. Record big-end journal code letters from
    crankshaft rear web.
    First letter is number 1 big-end bearing.

    Record big-end bearing bore code numbers;
    this will be 5, 6 or 7, located on the connecting
    rod bearing cap.
    2. Check crankshaft big-end journal diameters:
    Big-end journal diameter = 47.986 to 48.007
    mm
    Maximum out of round = 0.010 mm
    Big-end journal tolerance:
    Grade A = 48.000 to 48.007 mm
    Grade B = 47.993 to 48.000 mm
    Grade C = 47.986 to 47.993 mm
    Clearance in bearings = 0.021 to 0.049 mm
    Big-end/connecting rod end-float = 0.10 to 0.25
    mm
    3. Select the appropriate big-end bearing shells
    from the table.
    4. Replace crankshaft if outside tolerance.
    Big-end bearings size
    Big-end bore
    Grade A Grade B Grade C
    Crankshaft big-end journals
    Grade 5 BLUE - BLUE RED - BLUE RED - RED
    Grade 6 BLUE - YELLOW BLUE - BLUE RED - BLUE
    Grade 7 YELLOW - YELLOW BLUE - YELLOW BLUE - BLUE
    Colour code on edge of bearing
    Thickness progression:
    YELLOW - Thin
    BLUE - Intermediate
    RED - Thick
    If two bearing colours are to be used, thicker bearing
    must be fitted to big-end bearing cap.

    No the Y doesn't mean yellow LFB10023100L is blue LFB10023200L Red LFB10023300L is yellow.
    What's the condition of the journal like, if the big end bearing has collapsed the crank will be no good.

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