C15 and C18 On-Highway Engines Inlet and Exhaust Valve Seat Inserts - Remove and Install Caterpillar


Inlet and Exhaust Valve Seat Inserts - Remove and Install
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
A   166-7441  Valve Seat Extractor Tool Group 
B(1)  9U-6898  Valve Seat Driver (Exhaust) 
9U-6897 Valve Seat Driver (Inlet) 
(1) Part of 9U-7530 Engine Tool Group

Start By:

  1. Remove the inlet and exhaust valves.


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 1g01082582

  1. Use Tooling (A) to remove valve seat insert (1) from the cylinder head.

  2. Clean the bores in the cylinder head for the valve seat inserts. Remove any rough areas from the bores.

Installation Procedure


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 2g01079028

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

  2. Use Tooling (B) to install the new valve seat insert in the cylinder head.

    Note: Do not machine the prefinished valve seat inserts in order to correct the valve projection. Excessive valve projection indicates that the valve seat insert is not seated or material was not cleaned from the bottom of the counterbore.

End By:

  1. Install the inlet and exhaust valves.

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