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SERIES 638 OIL FILTER ADAPTOR

The oil filter adaptor secures the oil filter element and has a bypass valve which allows lubricating oil to circulate through the cylinder block even if the oil filter element is clogged. A thermostat has been incorporated to direct oil to the oil cooler when the temperature of the oil exceeds 80-84 C (26-27 F). ‪

Replacement of Oil Filter Adaptor

To determine if replacement of the oil filter adaptor is necessary, perform the following procedure. See Figure 28576 . ‪

Flowchart for Replacement of Oil Filter Adaptor

Removal of Oil Filter Adaptor

Remove the oil filter adaptor as follows: ‪

  1. Drain the lubricating oil from the cylinder block. Refer to section .
  2. Remove the oil filter element from the oil filter adaptor.
  3. Remove the oil cooler hoses (inlet and outlet) from the oil filter adaptor.
  4. Remove the oil filter adaptor from the cylinder block using J 42513. See Figure 28580 .

    1.Oil Filter Adaptor Assembly ‪

    8.Valve Body ‪

    2.Washer ‪

    9.Washer ‪

    3.Adaptor ‪

    10.Plug ‪

    4.Seal Ring ‪

    11.Thermostat Valve ‪

    5.Oil Filter Element ‪

    12.Washer ‪

    6.Adaptor ‪

    13.Plug ‪

    7.Valve ‪

    14.Adaptor ‪

    Removal of Oil Filter Adaptor

Cleaning of Oil Filter Adaptor

Clean the oil filter adaptor as follows: ‪

  1. Clean the oil filter adaptor with clean fuel oil.

    To avoid personal injury when blow drying, wear adequate eye protection (safety glasses or face plate) and do not exceed 276 kPa (40 lb/in. 2 ) air pressure. ‪

  2. Dry the oil filter adaptor with compressed air.
Inspection of Oil Filter Adaptor

Inspect the oil filter adaptor as follows: ‪

  1. Visually check the oil filter adaptor for cracked surfaces.
    1. If the oil filter adaptor has cracked surfaces, replace the component. Refer to section .
    2. If the oil filter adaptor has no cracked surfaces, reuse the component. Refer to section .
  2. Visually check the oil filter adaptor for any physical damage.
    1. If the oil filter adaptor has been physically damaged, replace the component. Refer to section .
    2. If the oil filter adaptor has not been physically damaged, reuse the component. Refer to section .

Installation of Oil Filter Adaptor

Install the oil filter adaptor as follows: ‪

  1. Install the oil filter adaptor to the cylinder block. Torque to 60 N m (44 lb ft). See Figure 28580 .

    1.Filter Base Assembly ‪

    8.Valve Body ‪

    2.Washer ‪

    9.Washer ‪

    3.Adaptor ‪

    10.Plug ‪

    4.Seal Ring ‪

    11.Thermostat Valve ‪

    5.Oil Filter Element ‪

    12.Washer ‪

    6.Adaptor ‪

    13.Plug ‪

    7.Valve ‪

    14.Adaptor ‪

    Installation of Oil Filter Adaptor

  2. Install the oil cooler hoses (inlet and outlet) to the oil filter adaptor.
  3. Refill crankcase with lubricating oil and install a new oil filter element. Refer to section .
  4. Run engine to verify repairs.