BODY AS- 2672068 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 166-7441 Valve Seat Extractor Tool 1 Start 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 g01082582
Use Tooling (A) to remove valve seat inserts (1). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
B 1U-9170 Valve Seat Driver(1) 1
9U-6898 Valve Seat Driver(2) 1
(1) INLET
(2) EXHAUST
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g01079028Note: 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 (B) to install the new valve seat inserts 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".