Main Bearing Cap

Main Bearing Cap





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.





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





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

Stage 1 35 Nm (3.6 kg-m, 26 ft-lb)
Stage 2 90° - 95° degrees clockwise
Tool number: KV10112100 (BT-8653-A)





Instructions for the re-use of the main bearing cap bolts.
A plastic zone tightening method is used for tightening the main bearing cap bolts. Measure d1 and d2 as shown.
For d2, select the minimum diameter in the measuring area.
If the difference between d1 and d2 exceeds the limit, replace the bolts for assembly.
Limit (d1 - d2) 0.11 mm (0.0043 in)