Centinel System – Repair Manual – 001-006   Bearings, Main

CAUTION  Mark any unmarked bearing caps before removing them from the cylinder block. Do not remove main bearing capscrews until the main bearing cap is pulled, or the cap could fall out, causing personal injury and parts damage.

If the crankshaft is
not going to be removed, replace the main bearings one at a time.

Loosen the main bearing cap capscrews.

Use the main bearing cap puller, Part Number ST-1178, to remove the cap. The tool
must be centered on the cap.

Remove the main bearing capscrews and cap.

Mark the bearing shells with the journal number from which they were removed.

Remove the lower main bearing shell from the cap.

Rotate the crankshaft with the air compressor drive or a barring device to remove the main bearing shell.

Mark each main bearing for location if they are to be installed again in the engine.