TM 5-3805-248-23-2
CRANKSHAFT MAIN BEARINGS MAINTENANCE - CONTINUED
0347 00
END BEARINGS REMOVAL - CONTINUED
CAUTION
Crankshaft must be rotated in direction of normal engine rotation when removing upper half main bearings.
Engine rotation is counterclockwise when viewed from rear of engine. Failure to follow this procedure could
result in damage to the block, crankshaft, or both.
4.
Rotate crankshaft counterclockwise to remove and discard two upper half main bearings (15).
5.
Remove main bearing removal and installation tool from oil hole of crankshaft journal.
END BEARINGS ADJUSTMENT
1.
Install main bearing removal and installation tool in oil hole of crankshaft journal.
2.
Use clean engine oil to lubricate two new upper half main bearings (15) and corresponding crankshaft journal.
3.
Position two new upper half main bearings (15) in cylinder block above crankshaft journal with bearing tab toward tab
locator on cylinder block.
ROTATION DIRECTION
FOR INSTALLATION OF UPPER
HALF OF BEARING
FRONT
TOOL
BLOCK
BEARING TAB
15
REAR
CRANKSHAFT
15
TOOL
394-1153
CAUTION
When installing bearings in cylinder block, crankshaft must be rotated in opposite direction from normal
engine rotation. Failure to follow this procedure could result in damage to block, crankshaft, or both.
4.
Rotate crankshaft clockwise to push two new upper half main bearings (15) into position.
5.
Remove main bearing removal and installation tool from oil hole in crankshaft journal.
0347 00-12
