Main Bearing Cap

Main Bearing Cap








Install main bearings and thrust bearings as follows:
Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.





Install thrust bearings to the both sides of the No. 3 journal housing on cylinder block.
^ Install thrust bearings with the oil groove facing crankshaft arm (outside).
^ Install thrust bearing with a projection on one end on cylinder block, Align projection with mating notch.





Install main bearings paying attention to the direction.
^ Main bearing with oil hole and groove goes on cylinder block. The one without them goes on lower cylinder block.
^ Before installing main bearings, apply engine oil to the bearing surface (inside). Do not apply engine oil to the back surface, but thoroughly clean it.
^ When installing, align main bearing stopper protrusion to cutout of cylinder block and lower cylinder block.
^ Ensure the oil holes on cylinder block and those on the corresponding bearing are aligned.

LOWER CYLINDER BLOCK BOLT OUTER DIAMETER





^ Measure the outer diameters ("d1", "d2") at two positions as shown.
^ If reduction appears in "A" range, regard it as "d2"
Limit ("d1" - "d2") 0.11 mm (0.0051 inch)
^ If it exceeds the limit (large difference in dimensions), replace lower cylinder block bolt with new one.

^ Install lower cylinder block as follows:

NOTE: Lower cylinder block cannot be replaced as a single part, because it is machined together with cylinder block.





a. Apply a continuous bead of liquid gasket using Tool to lower cylinder block as shown.
Tool number: WS39930000 ( - )
Use Genuine RTV Silicone Sealant or equivalent.

CAUTION: After liquid gasket is applied, rear oil seal installation must be finished within 5 minutes. Therefore, the following procedure must be performed quickly.

b. Tighten lower cylinder block as follows:





i. Apply new engine oil to threads and seat surfaces of the bolts.
ii. Tighten M8 bolts in numerical order as shown from No. 17 to 24.
Bolts 17 - 24: 22.1 Nm (2.3 kgf-m, 16 ft. lbs.)

CAUTION: Wipe off completely any protruding liquid gasket on rear oil seal installation surface.

NOTE: There are more processes to complete the tightening bolts. However stop procedure here to install rear oil seal.





c. Install rear oil seal.
d. Restart tightening of lower cylinder block bolts as follows:
i. Tighten M10 bolts in numerical order as shown from No. 1 to 16.

NOTE: Use TORX socket (size E14) for bolts No. 1 to 16 (M10 bolt).

Bolts 1 - 16: 35.3 Nm (3.6 kgf-m, 26 ft. lbs.)





ii. Turn M10 bolts 90° clockwise in numerical order from No. 1 to 16 using Tool.
Tool number: KV10112100 (BT-8653-A)

CAUTION: Use angle wrench Tool to check tightening angle. Do not make judgment by visual inspection.

^ After installing the bolts, make sure that crankshaft can be rotated smoothly by hand.
^ Wipe off completely any protruding liquid gasket on front side of the engine.
^ Check the crankshaft end play.