Cummins ISX11.9 CM2250 – Service Manual 002-004   Cylinder Head

Remove thirty-eight M15 and seven M10 cylinder head capscrews in the sequence shown.

Install cylinder head lifting bracket, Part Number 4919361. Use the eight M10 capscrews that are included in the cylinder head lifting fixture kit, Part Number 4919360.

Tighten the capscrews.

WARNING  This component or assembly weighs greater than 23 kg [50 lb]. To prevent serious personal injury, be sure to have assistance or use appropriate lifting equipment to lift this component or assembly.

CAUTION  Place the cylinder head on wood blocks to prevent damage to the combustion face.

CAUTION  Immediately upon removal of the cylinder head, plugs must be installed into all of the oil passage drillings in both the cylinder head and the cylinder block. The plugs are necessary to prevent debris from entering the lubricating system during the repair. Failure to insert oil passage plugs can result in connecting rod bearing failure, crankshaft failure, or both.

Use a hoist or hydraulic arm to remove the cylinder head.

Remove the cylinder head gasket.

Reusable plugs, Part Number 4089255, are included in the master plug kit, Part Number 4918319.

Install the plugs in the cylinder block and cylinder head oil drillings.