Main Bearing Cap

Main Bearing Cap





Follow the steps below to tighten each main bearing cap bolt.
Apply engine oil to threads and seating surfaces of bolts, and tighten all bolts temporarily.
Main bearing cap bolts in order of 1 to 10 39.2 Nm (4.0 kg-m, 29 ft.-lb)
Main bearing cap sub bolts in order of 11 to 20 29.4 Nm (3.0 kg-m, 22 ft-lb)





Measure tightening angle using Tool.
Tool number: KV10112100 (BT-8653-A)

CAUTION: Measure tightening angle using Tool. Do not measure visually.

Main bearing cap bolts in order of 1 to 10 40°
Main bearing cap sub bolts in order of 11 to 20 30°
Side bolts in order of 21 to 30 49 Nm (5.0 kg-m, 36 ft-lb)
Rotate crankshaft by hand after bolts are tightened. Check if it rotates smoothly.

MAIN BEARING CAP BOLT DIAMETER





Check for bolts (M9 and M12) installed from lower side using the following procedure.

NOTE:
Side bolt (M10) is outside the target.
Figure shows M12 bolt.

Measure bolt diameter "d1" from tip of the bolt to dimension "a".
Measure bolt diameter "d2" from the dimension between tip of the bolt and dimension "b" as base station to dimension "c".

NOTE: If a narrower part in the threads is determined by visual check, measure "d2" at that point.

Calculate the difference between "d1" and "d2".
M9 bolt
Dimension "a" 9 mm (0.35 in)
Dimension "b" 15 mm (0.59 in)
Dimension "c" 20 mm (0.79 in)
Limit 0.10 mm (0.0039 in)
M12 bolt
Dimension "a" 12 mm (0.47 in)
Dimension "b" 55 mm (2.17 in)
Dimension "c" 20 mm (0.79 in)
Limit 0.15 mm (0.0059 in)
Replace applicable bolts if outside the limit.