Engine Disassembly and Assembly
Crankshaft Main Bearings
Remove And Install Crankshaft Main Bearings 1203-
010
Tools Needed
A
B
C
2P5518 Bearing Tool
1
Plastigage
8S2328 Dial Indicator Test Group
1
START BY:
a. remove oil pump
b. remove oil pan plate
1. On 3304 Engines remove No. 1, 3, and 5 main
bearing caps (1). On 3306 engines remove No. 1, 3, 5
and 7 main bearing caps (1). Remove the lower halves
of the main bearings from the main bearing caps.
NOTICE
If the crankshaft is turned in the wrong direction,
the tab on the bearing will be pushed between the
crankshaft and the bearing area in the cylinder
block. This can result in damage to the cylinder
block and/or the crankshaft.
2. Install tool (A) in the hole in the crankshaft journal,
and turn the crankshaft to remove the upper halves of
main bearings (2).
3. Remove crankshaft thrust bearings (3) from the rear
main bearing.
NOTE : Install the main bearings dry when the clearance
checks are made. Put clean engine oil on the main
bearings for final assembly.
NOTICE
Make sure the upper and lower halves of the main
bearings are installed so the bearing tabs fit into the
notch in the cylinder block and the main bearing
caps.
4. Use tool (A), and install new upper halves of main
bearings (2) in the cylinder block. Install new lower
halves of main bearings (2) in main bearing caps (1).
94
