Cummins N14 – Cylinder Head – Replacing the Valve Seat Inserts – Inspection

Visually inspect the insert bore for cracks or damage.
NOTE: If cracks or damage are found, it is possible to repair the cylinder head by machining the insert bore for oversize valve seat inserts. Refer to the Alternative Repair Manual, Bulletin No. 3379035.

Measure the valve seat insert bore depth in the cylinder head.

NOTE: If the valve seat insert bore depth does not meet the specifications given, it is possible to repair the cylinder head by machining the insert bore for oversize valve seat inserts.
Refer to the Alternative Repair Manual, Bulletin No. 3379035.

Measure the inside diameter of the valve seat insert bore in the cylinder head.

NOTE: If the valve seat insert bore inside diameter does not meet the specifications given, it is possible to repair the
cylinder head by machining the insert bore for oversize valve seat inserts. Refer to the Alternative Repair Manual, Bulletin No. 3379035.