Caution: Do not install straight thread plugs or pipe plugs in the block until cleaning, inspection, and nec-
essary repair procedures are completed. This will prevent dirt from being trapped in the engine.
Use pipe sealant, Part No. 3375066, to lubricate the pipe plug threads.
Install new o-rings on the straight thread plugs. The o-ring used by Cummins Engine Company, Inc., is the only one
recommended by Cummins Engine Company. Lubricate the o-ring with clean 15W-40 oil.
Install a 3/4 – 16 straight thread plug in the piston cooling oil passage. Tighten the straight thread plug.
Torque Value: 75 N•m [55 ft-lb]
Install a 3/8-inch pipe plug in the main oil passage. Tighten the pipe plug.
Torque Value: 27 N•m [20 ft-lb]
Install a 3/8-inch pipe plug in the piston cooling oil crossover passage at the front of the cylinder block. Tighten
the pipe plug.
Torque Value: 27 N•m [20 ft-lb]
Install a 3/4 – 16 straight thread plug in the piston cooling oil passage at the rear of the cylinder block. Tighten the
straight thread plug.
Torque Value: 75 N•m [55 ft-lb]
Install a 3/4 – 16 straight thread plug in the piston cooling oil passage. Tighten the straight thread plug.
Torque Value: 75 N•m [55 ft-lb]
Install a 3/8-inch pipe plug in the main oil passage. Tighten the pipe plug.
Torque Value: 27 N•m [20 ft-lb]
NOTE: These pipe plugs must be flush or below flush with the rear face of the cylinder block.
Install the copper washer and the 7/8 – 18 straight threaded plug in the main oil crossover passage in the front of the
cylinder block. Tighten the straight thread plug.
Torque Value: 88 N•m [65 ft-lb]
Install six pipe plugs and one straight thread plug from the main oil passage on the intake side of the cylinder block.
Install the straight threaded plug from the main oil transfer passage on the intake side of the cylinder block.
(1) Torque Value: 55 N•m [40 ft-lb]
(2) Torque Value: 7 N•m [5 ft-lb]
(3) Torque Value: 25 N•m [15 ft-lb]
(4 to 7) Torque Value: 15 N•m [10 ft-lb]
