Cleaning and Inspection

CLEANING

CAUTION: Handle the crankshaft carefully to avoid damage to the finished surfaces.

Clean the crankshaft with solvent, then blow out all oil passages with compressed air.

On an engine used with a manual transmission, check the fit of the clutch pilot bearing in the bore of the crankshaft. A needle roller bearing and adapter is used as a pilot bearing. It is press-fit directly into the engine crankshaft and should not be loose. Inspect the inner surface of the pilot bearing for wear or a bell-mouth condition. Check the inside diameter of the pilot bearing to see if it is worn or damaged. The bearing and adapter cannot be serviced separately. The needle pilot bearing can only be installed with the seal end of the pilot bearing facing the transmission. The pilot bearing is pre-greased and does not require additional lubrication. Install a new pilot bearing whenever a pilot bearing is removed.

Inspect the pilot bearing, if equipped, for roughness, evidence of overheating or loss of lubricant. Replace pilot bearing if any of these conditions are found.

INSPECTION
Inspect the main and connecting rod journals for cracks, scratches, grooves, scores or rough finish. Inspect the crankshaft rear oil seal surface for nicks, sharp edges or burrs that might damage the oil seal during installation or cause premature oil seal wear.