ADAPTER 7S8842 - Caterpillar

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Remove rotocoil assembly (9), valve spring (5), valve spring (4), and washer (8) from valve (7).
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Remove valve (7) from cylinder head (2).
Repeat Step 1 through Step 5 to remove the remaining valves.
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Use Tooling (B) to check valve spring force. Refer to Specifications, "Cylinder Head Valves" for the correct valve spring force.Inlet and Exhaust Valve Seat Inserts
Note: Combustion surface and valve seat insert bores must be free of contaminants and debris.
When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.
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Insert Tooling (C) in the bore of valve seat insert (10).
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Slide the lower slide to lock Tooling (C) in place.Note: The valve seat insert may break during removal. Ensure that all fragments of the valve seat insert are removed.
Attach Tooling (D) to Tooling (C) and remove the valve seat insert (10).
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Lift Tooling (C) off the cylinder head (2) and slide the lower slide to unlock Tooling (C).
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Slide the collets of Tooling (C) and valve seat insert (10) back. Then remove valve seat insert.Inlet and Exhaust Valve Guides
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Use Tooling (E) and a suitable press to remove inlet valve guides (11) and exhaust valve guides (12) from cylinder head (2).Adapter
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Use Tooling (F) to remove adapter (13).
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Remove O-ring seal (14) and washer (15) from adapter (13).Bridge Dowels
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Use Tooling (G) to remove dowels (16) from cylinder head (2).