3-9. CRANKSHAFT MAIN BEARINGS - REPLACE (Contd)
If crankshaft is turned in the wrong direction,
the tab on the upper bearing half will be
pushed between the crankshaft and main
bearing bore in the block. This could cause
damage to the block and the crankshaft.
REMOVAL STEPS 2b through 2f.
When bearings are reused, each bearing
must be installed in its original location
because the bearing surfaces have worn to
the crankshaft journals.
NUMBER 7 MAIN BEARINGS, CLEANING
STEPS 1 AND 2, INSPECTION STEPS 1, 3, 4,
CHECK NUMBER 1 MAIN BEARING (3 AND 4)
If main bearings are coated with oil, remove
oil with a clean wiping rag.
To help prevent damage to the cylinder
block during main bearing bore cleaning,
compressed air shall not exceed 15 psig.
Use compressed air only with effective chip
Clean main bearing surfaces in the cylinder
block and bearing caps with cleaning
solvent P-D-680. Dry surfaces thoroughly
with low pressure compressed air (15 psig