COVER GP 2691079 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) 6V-4194 Valve Seat Extractor 1
B(1) 165-5647 Valve Seat Extractor 1
C(1) 6V-4804 Handle 1
D(1) 6V-4192 Shaft 1
E(1) 6V-4199 Lifting Bracket 1
(1) Part of the 166-7441 Valve Seat Extractor Tool GroupStart By:
Remove the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00987231
Illustration 2 g00987198Note: Replace Tooling (A) with Tooling (B) for the removal of the inlet valve seat insert.
Install Tooling (A) in the exhaust valve seat insert.
Install Tooling (C) and Tooling (D) in Tooling (A). Hand tighten Tooling (D). Tooling (A) will expand below the edge of valve seat insert (1).
Illustration 3 g00987225
Install Tooling (E) on the cylinder head under Tooling (C). Hold Tooling (D) while you turn Tooling (C). Remove valve seat (1). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
F 149-6115 Installer 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 4 g00987231Note: Do not machine the prefinished valve seat inserts in order to correct the valve stem projection. An excessive valve stem projection indicates that the valve seat insert is not seated or material was not cleaned from the bottom of the counterbore.
Turn Tooling (F) upside-down and use Tooling (F) and a press to install valve seat inserts (1) in the cylinder head assembly. End By:
Install the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".