MP15, MP20, MP30 and MP40 Multi-Processors Wear Plates - Inspect/Replace Caterpillar


Wear Plates - Inspect/Replace
`
1.1. Inspect the Wear Plates
2.1. Replace the Wear Plates


Inspect the Wear Plates

------ WARNING! ------

Personal injury or death can result from sudden work tool movement.

Sudden movement of the work tool can cause injury to persons near the work tool.

To prevent injury or death, make sure that the area around the work tool is clear of personnel and obstructions before operating the work tool.

----------------------

  1. Clean the work tool.

  1. Place the work tool in a horizontal position. Open the jaws of the work tool.

  1. Lock the jaws in an open position. The following procedure describes maintaining the jaws in the open position.



      Illustration 1g01943988

      MP15, MP20, MP30 and MP40

      Clamp GP for the hydraulic cylinder

    1. In order to hold the movable jaw in the open position, install clamp gp (1) onto cover (2) . The clamp gp (1) must be installed behind guide block (3) for the cover. Refer to Table 1 for the part numbers of the clamp gp.

      Table 1
      Clamp GP  (1)    
      Sales Model     Part Number    
      MP15     200-2959    
      MP20     200-2960    
      MP30     200-2885    
      MP40     200-2961    
      ( 1 ) Part of the maintenance kit



    Illustration 2g02150387

    MP15 CC and MP15 CR

    Wear plates installed on different sales models.




    Illustration 3g02150388

    MP20 CC, MP20 CR, MP30 CC, and MP30 CR

    Wear plates installed on different sales models.




    Illustration 4g02150390

    MP15 PP, MP20 PP, MP30 PP, MP40 CC, and MP40 CR

    Wear plates installed on different sales models.

  1. Inspect wear plates (K, L, M, P) for excessive wear or damage. If the wear plates have excessive wear or damage, the wear plates must be replaced.

    Note: New wear plates contain cracks, due to the hardness of the material. Cracks on new wear plates are not caused from wear or damage.

Replace the Wear Plates

  1. Clean the work tool.

  1. Place the work tool in a horizontal position. Open the jaws of the work tool.

  1. Lock the jaws in an open position. Refer to , "Inspect the Wear Plates" for more information.



    Illustration 5g02151830

    MP15 CC and MP15 CR jaw sets

    Wear plates installed on different sales models.




    Illustration 6g02151832

    MP20 CC, MP20 CR, MP30 CC, and MP30 CR jaw sets

    Wear plates installed on different sales models.




    Illustration 7g02151833

    MP15 PP, MP20 PP, MP30 PP, MP40 CC, and MP40 CR jaw sets

    Wear plates installed on different sales models.

  1. Remove teeth at jaw location (Y) .

  1. Grind away the welds in order to remove the wear plates (K, L, M, P) . The existing wear plates can only be removed by grinding off the wear plates.

  1. Grind the surface of the end plate (Z) . The surface should be clean and free of rust.

    ------ WARNING! ------

    Personal injury can result from flame cutting or welding on painted areas.

    The effect of gasses from burned paint is a hazard to the person doing the cutting or welding.

    Do not flame cut or weld on painted areas.

    ----------------------



    Illustration 8g02463121

    MP15 CC and MP15 CR jaw sets

    Wear plates installed on different sales models.




    Illustration 9g02463122

    MP20 CC, MP20 CR, MP30 CC, and MP30 CR jaw sets

    Wear plates installed on different sales models.




    Illustration 10g02463123

    MP15 PP, MP20 PP, and MP30 PP jaw sets

    Wear plates installed on different sales models.




    Illustration 11g02463124

    MP40 CC, and MP40 CR jaw sets

    Wear plates installed on different sales models.

  1. Remove the paint from the end plate (Z) . Remove the paint from the surface to be welded.

    Table 2
    Sales Model     MP15 CC, MP15 CR     MP20 CC, MP20 CR     MP30 CC, MP30 CR     MP15 PP     MP20 PP     MP30 PP     MP40 CC, MP40 CR    
    (A)  (1)     44 ± 2 mm (1.73 ± 0.079 inch)     N/A     N/A     N/A     N/A     N/A     N/A    
    (B)    
    18.5 ± 2 mm (0.728 ± 0.079 inch)    
    N/A     N/A     N/A     N/A     N/A     N/A    
    (C)     N/A    
    18.5 ± 2 mm (0.728 ± 0.079 inch)    

    18.5 ± 2 mm (0.728 ± 0.079 inch)    

    15 ± 2 mm (0.591 ± 0.079 inch)    

    13.5 ± 2 mm (0.532 ± 0.079 inch)    

    15 ± 2 mm (0.591 ± 0.079 inch)    

    23.5 ± 2 mm (0.925 ± 0.079 inch)    
    (D)     N/A    
    18.5 ± 2 mm (0.728 ± 0.079 inch)    

    18.5 ± 2 mm (0.728 ± 0.079 inch)    

    15 ± 2 mm (0.591 ± 0.079 inch)    

    13.5 ± 2 mm (0.532 ± 0.079 inch)    

    15 ± 2 mm (0.591 ± 0.079 inch)    

    23.5 ± 2 mm (0.925 ± 0.079 inch)    
    (E)     N/A    
    45 ± 2 mm (1.772 ± 0.079 inch)
    (2X)    

    45 ± 2 mm (1.772 ± 0.079 inch)
    (2X)    

    40 ± 2 mm (1.575 ± 0.079 inch)    

    40 ± 2 mm (1.575 ± 0.079 inch)    

    40 ± 2 mm (1.575 ± 0.079 inch)    

    50 ± 2 mm (1.969 ± 0.079 inch)    
    (E1)     N/A     N/A     N/A    
    40 ± 2 mm (1.575 ± 0.079 inch)    

    40 ± 2 mm (1.575 ± 0.079 inch)    

    40 ± 2 mm (1.575 ± 0.079 inch)    
    N/A    
    Wear Plates (K)     318-1731     N/A     N/A     N/A     N/A     N/A     N/A    
    Wear Plates (L)     N/A     226-3798
    (2X)    
    317-0894
    (2X)    
    N/A     N/A     N/A     N/A    
    Wear Plates (M)     N/A     N/A     N/A     321-9947
    (2X)    
    307-6065
    (2X)    
    317-3705
    (2X)    
    321-9877
    (2X)    
    Wear Plates (P)     N/A     N/A     N/A     235-0916     307-6066     317-3706     321-9877    
    ( 1 ) Measure to the top of the wear plates

    Note: New wear plates contain cracks, due to the hardness of the material. Cracks on new wear plates are not caused from wear or damage.

  1. Tack weld the new wear plates (K, L, M, P) to the end plate (Z) of the jaw. Check for proper positioning. Refer to table 2 and illustrations 8, 9, 10 and 11 for dimensions and part numbers of the wear plates (K, L, M, P) .

  1. Preheat the surface of the end plate (Z) to 150 °C (302 °F) to 200 °C (392 °F).

  1. In order to weld the wear plate (K, L, M, P) , use welding material AWS A5.18: ER70S-6.

  1. Cool the weld slowly to room temperature. Wrap the weld in an insulating blanket in order to allow the weld to cool over several hours.

    Note: Replacing the wear plates should be performed at the end of the day. Replace the wear plates at a time when the weld will have plenty of time to cool. The weld should have plenty of time in order to cool before the jaw set is placed back into operation.

  1. Remove all debris from the welds.

  1. Install teeth at jaw location (Y) . Refer to , "Crusher Tooth and Ripper Tooth-Replace" for the proper procedure.

  1. Paint the welded area with primer. Allow primer to dry.

  1. Paint the welded area with a final coat of paint. Allow the paint to dry.

  1. Remove the clamp gp (1) . Refer to , "Inspect the Wear Plates" for more information.

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