Crankshaft and Bearing Removal

Special Tools 

EN-571 - B  Dial Gage

For equivalent regional tools, refer to Special Tools .

1. Remove the 2 long lower crankcase bolts (1).

2. Remove the 8 short lower crankcase bolts (2).
3. Fig 1: Lower Crankcase Bolt Loosening Sequence

   

   Loosen the 10 lower crankcase bolts in the sequence as shown.

4. Remove and DISCARD the 10 lower crankcase bolts (2).

5. Loose the lower crankcase (1) from the engine block, use a suitable tool.
6. Remove the lower crankcase (1).
7. Clean the sealing surfaces.
8. NOTE:

   The check is conducted with the crankshaft bearing shells installed in the cylinder block and the flywheel removed. The crankshaft is only loosely fitted in the cylinder block.

   Install the EN-571-B  gage (2) along with the bracket (1) to the timing side of the engine block.

9. If the value for the crankshaft axial play does not correspond with the permissible axial play, regrind the crankcase seat and use a suitable oversize thrust bearing. For oversize thrust bearings, refer to Engine Mechanical Specifications .
10. Measure the crankshaft axial play. For permissible axial play, refer to Engine Mechanical Specifications .
11. NOTE:

    Mark the installation position. Set aside in order removed.

    Remove the 5 crankshaft lower bearings (1) from the lower crankcase (2).

12. Remove the crankshaft (1).

NOTE:

Mark the installation position. Set aside in order removed.

13. Remove the 4 crankshaft upper bearings (2).
NOTE:

The second crankshaft bearing from the transmission side contains the thrust bearing.

14. Remove the crankshaft thrust upper bearing (4).