Disassembly and Assembly: Assembly

1. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.
2. Install thrust bearings (2) to both sides of the No. 3 journal housing on cylinder block (1).

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   (3)	: Main bearing (upper) (cylinder block side)
   (4)	: Crankshaft
   (5)	: Main bearing (lower) (main bearing cap side)
   	: Engine front

   • Install thrust bearings with the oil groove (A) facing crankshaft arm (outside).
3. Install main bearings paying attention to the direction.
   • Main bearing with oil hole (B) and groove (C) goes on cylinder block. The one without them goes on main bearing cap.
   • 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 main bearing.
   • Ensure the oil holes on cylinder block and those on the corresponding bearing are aligned.

• While turning crankshaft by hand, check that it turns smoothly.

• Align the identification number to the journal position to install.

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  : Engine front

• Install it with the front mark (indicated by stamping) facing the front of engine.
• Using a suitable tool, tap them lightly to seat them on the installation position.
  NOTE: Main bearing cap cannot be replaced as a single parts, because it is machined together with cylinder block.

1. Apply new engine oil to threads and seat surfaces of main bearing cap bolts and sub bolts.
2. Tighten all bolts in order of (No. 1 - 30) temporarily.

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   : Engine front

3. Bolts
   Step 1	(1-10)	: 39.2 N.m (4.0 kg-m, 29 ft-lb)
   Step 2	(11-20)	: 29.4 N.m (3.0 kg-m, 22 ft-lb)
   Step 3	(1-10)	: Tighten 40 deg.
   Step 4	(11-20)	: Tighten 30 deg.
   Step 5	(21-30)	: 49.2 N.m (5.0 kg-m, 36 ft-lb)

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

   Tool number

   : KV10112100 (BT8653-A)

   • After installing bolts, check that crankshaft can be rotated smoothly by hand.
   • Check the crankshaft end play. Refer to Cylinder Block .

• Apply a continuous bead of liquid gasket with a suitable tool to rear oil seal retainer as shown in the figure.

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  (A)	: Protrusion
  (B)	: 4.0 - 5.6 mm (0.157 - 0.220 in)
  (C)	: 3.4 - 4.4 mm (0.134 - 0.173 in)

Use Genuine RTV silicone sealant or equivalent. Refer to Recommended Chemical Products and Sealants .

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• Apply new engine oil to both oil seal lip (A) and dust seal lip (B).
• Install it so that each seal lip is oriented as shown in the figure.
  CAUTION: Be careful not to scratch or make burrs on circumference of oil seal.
• Press in rear oil seal (1) to the position as shown using a suitable tool.

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  (A)	: 0 - 0.5 mm (0 - 0.020 in)
  (B)	: Rear oil seal retainer rear end face

• Check the garter spring is in position and seal lips are not inverted.

• Assemble so that the front mark (A) on the piston head and the cylinder number (D) on connecting rod are positioned as shown in the figure.

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  (B)	: Oil hole
  (C)	: Front mark
  	: Engine front

1. Using a suitable tool, install new snap ring to the groove of piston rear side.
   • Insert it fully into groove to install.
     CAUTION: Do not reuse snap rings.
2. Install piston to connecting rod.
   • Using a suitable tool, heat piston until piston pin can be pushed in by hand without excess force [approximately 60 to 70 deg.C (140 to 158 deg.F)]. From the front to the rear, insert piston pin into piston and connecting rod.
3. Install new snap ring to the groove of the piston front side.
   • Insert it fully into groove to install.
     CAUTION: Do not reuse snap rings.
   • After installing, check that connecting rod moves smoothly.

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• If there is stamped mark on ring, mount it with marked side up.

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  Stamped mark:
  Top ring (A)	: 1 K
  Second ring (B)	: 2 K

• Position each ring with the gap as shown in the figure referring to the piston front mark (D).

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  (A)	: 90 degrees
  (B)	: 45 degrees
  (C)	: Top ring gap
  (E)	: Oil ring upper or lower rail gap (either of them)
  (F)	: Second ring and oil ring spacer gap

• Check the piston ring side clearance. Refer to Inspection .

• Before installing connecting rod bearings, apply engine oil to the bearing surface (inside).
  WARNING: Do not apply engine oil to connecting rod side of bearings.
• Make sure connecting rod bearing to connecting rod bearing surface is free of debris.
• When installing, align connecting rod bearing stopper protrusion (B) with cutout (A) of connecting rods and connecting rod bearing caps to install.

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• Ensure the oil hole (C) on connecting rod and that on the corresponding bearing are aligned.

• Position crankshaft pin corresponding to connecting rod to be installed onto the bottom dead center.
• Apply engine oil sufficiently to the cylinder bore, piston and crankshaft pin journal.
• Match the cylinder position with the cylinder number on connecting rod to install.
• Be sure that front mark on piston crown is facing the front of the engine.
• Using a suitable tool (A), install piston with the front mark on the piston crown facing the front of the engine.

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• Match the stamped cylinder number marks on connecting rod with those on connecting rod bearing cap to install.

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  (A)	: Sample codes
  (B)	: Bearing stopper groove
  (C)	: Small-end diameter grade
  (D)	: Big-end diameter grade
  (E)	: Weight grade
  (F)	: Cylinder No.
  (G)	: Management code

• Be sure that front mark (H) on connecting rod bearing cap is facing the front of the engine.

1. Inspect the outer diameter of connecting rod bolt. Refer to Inspection .
2. Apply engine oil to the threads and seats of connecting rod bolts.
3. Tighten connecting rod bolts using the following procedure:

   Step 1	: Tighten 29.4 N.m (3.0 kg-m, 21.7 ft-lb)
   Step 2	: Loosen 0 N.m (0 kg-m, 0 ft-lb)
   Step 3	: Tighten 19.6 N.m (2.0 kg-m, 14.5 ft-lb)
   Step 4	: Tighten 90 deg. +5 deg./-0 deg.

   CAUTION: Always use Tool to check tightening angle. Do not make judgment by visual inspection.

   Tool number

   : KV10112100 (BT8653-A)

   • After tightening connecting rod bolts, check that crankshaft rotates smoothly.
   • Check the connecting rod side clearance. Refer to Inspection .

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• Install knock sensors as shown.

  (A)	: Bank 1
  (B)	: Bank 2
  	: Engine front

• After installing knock sensor, connect harness connector and lay it out to front of the engine.