GASKET 8S4187 - Caterpillar

Remove & Install Valve Covers & Spark Plugs
1. Disconnect harness assembly (1) from transformer assembly (2).2. Remove bolts (3) and transformer assembly (2). 3. Remove extension assembly (4) from inside the tube.4. Remove the spark plug from inside the tube.5. Remove bolts (5). Remove valve cover (6) from the valve cover base. 6. Remove the bolt, the retainer and tube (7). If necessary, remove the O-ring seals. The following steps are for the installation of the valve covers and spark plugs.7. Put clean engine oil on the O-ring seals. Install tube (7), the retainer and the bolt.8. Make sure the seal is installed in the groove of valve cover (6). Cut new seals to fit at assembly.9. Install valve cover (6) on the valve cover base and install bolts (5).10. Install the spark plug inside the tube.11. Install extension assembly (4) on the spark plug.12. Install transformer assembly (2) on the valve cover and install bolts (3).13. Connect harness assembly (1) to the transformer assembly. Install a new lock wire.