TUBE AS 8D4007 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     9S-3095     Puller Handle     1    
B     6V-4194
(1)     Valve Seat Extractor     1    
1U-9167
(1) Valve Seat Extractor     1    
( 1 ) For use with Exhaust Valve Seat
( 1 ) For use with Intake Valve SeatStart By:
Remove inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".
Illustration 1 g01137634
Use Tooling (A) and Tooling (B) to remove valve seat inserts (1) .Installation Procedure
Table 2
Required Tools    
Tool     Part Number     Part Description     Qty    
C     4C-6372 (1)     Valve Seat Driver     1    
364-4009 (1) Valve Seat Driver     1    
( 1 ) For use with Exhaust Valve Seat
( 1 ) For use with Intake Valve Seat
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g01137637
Note: 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.
Lower the temperature of new valve seat inserts (1) . Use Tooling (C) to install valve seat inserts (1) into the cylinder head.End By: Install the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".