GEAR AS-IDLER 1960028 - 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 valves and the exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install". Note: For information on the reusability of valve seats, refer to Guideline For Reusable Parts And Salvage Operation, SEBF8155.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01133493
Use Tooling (A) to remove valve seat inserts (2) from cylinder head (1).
Thoroughly clean the valve seat bores in the cylinder head. Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
B 1P-0510 Driver Gp 1 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.Note: If the valve seats are replaced, you must replace the valve guides.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g01133494
Lower the temperature of valve seat inserts (2).
Use Tooling (B) to install valve seat inserts (2) in cylinder head (1). End By:
Install the inlet valves and the exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".