Main Bearing

Main bearings

^ After installing the crankshaft, lower main bearings, main bearing caps, main bearing beam, and bearing cap bolts. Tighten the bearing cap bolts in the numerical order as shown.





a. Make sure that the front marks on the main bearing beam faces the front of the engine.
b. Prior to tightening all the bearing cap bolts, place the bearing beam in its proper position by shifting the crankshaft in the axial position.
c. After tightening the bearing cap bolts, make sure the crankshaft turns smoothly.
d. Lubricate the threads and seat surfaces of the bolts with new engine oil.
e. Tighten the bolts in two stages:





CAUTION: Measure the tighten angle in stage 2 with an angle wrench. Do not measure visually.

Stage 1 : 32 - 38 Nm (3.3 - 3.9 kg-m, 24 - 28 ft. lbs.)
Stage 2 : 90° - 95° degrees clockwise
Tool number : KV10112100 (BT-8653-A)





^ Measure crankshaft end play.
^ If beyond the limit, replace the bearing with a new one.
Standard : 0.10 - 0.25 mm (0.0039 - 0.0098 inch)
Limit : 0.30 mm (0.0118 inch)








AVAILABLE MAIN BEARING