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C7 Industrial Engines Disassembly and Assembly – Inlet and Exhaust Valve Seat Inserts – Remove and Install

Removal Procedure

Table 1
Required Tools
Tool Part Number Part Description Qty
A (1) 6V-4194 Valve Seat Extractor  (2) 1
165-5647 Valve Seat Extractor  (3) 1
6V-4804 Handle 1
6V-4192 Shaft 1
6V-4199 Lifting Bracket 1
( 1 ) Part of the 166-7441 Valve Seat Extractor Tool Group
( 2 ) Use for removal of the exhaust valve seats
( 3 ) Use for removal of the inlet valve seats

Start By:

  1. Remove the inlet and exhaust valves. Refer to Disassembly and Assembly, “Inlet and Exhaust Valves – Remove and Install”.

 

 
NOTICE
Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

 

  1. Use Tooling (A) to remove valve seat inserts (1) .

Installation Procedure

Table 2
Required Tools
Tool Part Number Part Description Qty
B 149-6115 Installer 1
133-9306 Valve Guide 1

 
NOTICE
Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

  1. Lower the temperature of new valve seat inserts (1) .

 

  1. Use Tooling (B) and a suitable press to install the new valve seat inserts in the cylinder head.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.

End By: Install the inlet valves and exhaust valves. Refer to Disassembly and Assembly, “Inlet and Exhaust Valves – Remove and Install”.

 

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