Rotate the crankshaft until the pistons are below the carbon deposits that are found above the ring travel area. Use a fine fibrous abrasive pad,…

NOTE: Align the vibration damper/crankshaft speed indicator ring assembly with the index pin located on the nose of the crankshaft. Lubricate the capscrews with clean…

Use soapy water to clean any oil from the vibration damper/crankshaft speed indicator ring assembly. Dry the vibration damper/crankshaft speed indicator ring assembly with compressed…

For front gear train engines, remove the four capscrews. For rear gear train engines, remove the six capscrews. NOTE: The crankshaft speed indicator ring is…

Inspect the piston rings for the following: • Abrasive wear. NOTE: Abrasive wear of the intermediate ring can be indicated by a rapid reduction of…

J-Jet Piston Cooling Nozzle Install the piston cooling nozzle one cylinder at a time rotating the crankshaft as necessary for access. Use a long extension…

Clean the J-jet piston cooling nozzle and oil passage in the block using solvent. Dry with compressed air. Inspect the capscrew and J-jet piston cooling…

J-Jet Piston Cooling Nozzle Rotate the crankshaft to various positions to access each piston cooling nozzle. Remove the piston cooling nozzles.  

J-jet piston cooling nozzles are located between the main bearing saddles on the exhaust side of the engine. Oil is supplied from an oil gallery…

NOTE: To ensure accuracy, the following measurements must be completed with the components at room temperature, 20°C [68°F] Measure the piston skirt diameter 21.4 mm…