Caterpillar GM4.3L Gasoline Engine Service Manual SN 003103 & up - PDF DOWNLOAD

Page 51

Cylinder Head and Valves

5. If the valve lifters cannot be removed with the MCF-1078 (J 3049), use the J 9290-01 to remove the valve lifters.

2. 3. 4. 5.

Remove the valve rocker arms. Remove the spark plugs. Install the J 23590. Apply compressed air to hold the valves in place.

Valve Stem Oil Seal and Valve Spring Removal

6. Install the valve rocker arm nut. 7. Use the MCF-1089 (J 5892-D).

Tools Required • J 23590 Spark Plug Adapter • MCF-1089 (J 5892-D) Valve Spring Compressor • MCF-1090 (J 38606) Valve Spring Compressor MCF-1089 (J 5892-D)

8. Use the MCF-1090 (J 38606) if clearance does not permit use of MCF-1089 (J 5892-D).

1. Remove the valve rocker arm cover.

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