PISTON 1838972 - Caterpillar

Table 1
Valve Seat Insert    
New Inlet Valve     New Valve Seat Insert     Former Inlet Valve     Former Valve Seat Insert    
161-4280     163-9063     113-6180     169-6862
(1)    
161-4280     163-9063     7W-8064     7W-8065    
161-4280     163-9063     101-3198     130-9004    
( 1 ) The 169-6862 Valve Seat Insert can be reused with the new 161-4280 Inlet Valve, if the valve seat insert meets reusability guidelines. For information on the reusability of the valve seats, refer to Guideline For Reusable Parts And Salvage Operations, SEBF8218, "Specifications for Cylinder Head Assemblies 3114, 3116, and 3126 Engines".Note: The new valve seat inserts must be machined after installation in order to recess the valve head. Dimension X in Illustration 1 must be 1.59 .46 mm (0.063 0.018 inch) after machining.
Illustration 1 g00696046