Crankshaft Main Bearing

CRANKSHAFT MAIN BEARING

Wear Limit 0.30 mm (0.0118 in.)
Main bearing diametrical clearance 0.028-0.048 mm (0.0011-0.0018 in.)
Main bearing diametrical clearance (Max) 0.058 mm (0.0022 in.)

Main Bearing Selection Chart







CAUTION: There are different sets of main bolts supplied with this engine. Each bolt set has a different torque value and engine damage could result if bolts are not torqued correctly. The bolts are not interchangeable.





If your bolt heads look like this (1,2), go to step 1. If your bolt heads do not look like this (1,2), go to step 2.






CAUTION: Before tightening bolts, you must identify the bolt head to obtain the correct torque value. Failure to identify the bolts correctly, could result in improperly tightened bolts which could result in engine damage.

1. Tighten bolts using a three step method, in the sequence shown.
- Tighten bolts to 15 Nm (11 ft. lbs.)
- Tighten bolts to 27 Nm (20 ft. lbs.)
- Rotate an additional 45°.

2. Tighten bolts using a three step method, in the sequence shown.
- Tighten bolts to 15 Nm (11 ft. lbs.)
- Tighten bolts to 45 Nm (33 ft. lbs.)
- Rotate an additional 45°.


There are three different size bearings available. The bearing class is read downward from top and corresponds to the front journal to the rear journal on the bottom.

UPPER MAIN BEARING SELECTION