Visually inspect the rocker lever contact pad for wear, cracks, or damage. Visually inspect the valve stem contact areas for damage. Measure both valve stem…

Use solvent to clean the crosshead. Dry with compressed air.  

Refer to the Alternate Repair Manual, Bulletin No.3379035, for procedures to magnetically check for cracks in the intake and exhaust valves.

Use valve vacuum tester, Part No. ST-1257, to inspect the seal between the valve and the valve seat. Install the seal ring, Part No. 3823848,…

Caution: The cylinder head must be thoroughly cleaned after using the magnetic crack detector, Part No. ST- 1166, so that all iron fragments are removed.…

Caution: Do not pressure test the cylinder head with the valves and the valve springs installed. If the cylinder head is assembled, the valve guides…

Use vegetable oil to lubricate the injector sleeve o-rings. Install the o-ring (1) into the groove of the injector sleeve bore. Use an injector sleeve…