CYLINDER BLOCK DISASSEMBLY (II)

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1. Disassemble in the order indicated in the table.

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1 | Connecting rod cap (See Connecting Rod Cap Disassembly Note)
2 | Lower connecting rod bearing
3 | Upper connecting rod bearing
4 | Connecting rod, piston assembly
5 | Piston ring
6 | Piston pin (See Piston Pin Disassembly Note)
7 | Piston
8 | Connecting rod
9 | Lower cylinder block (See Lower Cylinder Block Disassembly Note)
10 | Lower main bearing
11 | Crankshaft
12 | Upper main bearing
13 | Oil jet valve
14 | Upper cylinder block

Connecting Rod Cap Disassembly Note

  Caution
  • When removing the connecting rod bearings and reusing them, put a paint mark showing the front end and the journal number before the removal.

1. Inspect the connecting rod side clearance. (See CONNECTING ROD INSPECTION.)

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Piston Pin Disassembly Note

1. Before extracting the piston pin, inspect the following.

  (1) Check the oscillation torque as shown. Verify that the large end drops under its own weight with no resistance.

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    • If the piston shakes heavily or unsmoothly, replace the piston and the piston pin.

2. Assemble the SSTs to the piston using the following procedures.

  (1) Assemble the SST (49 E011 001A) and the SST (49 E011 002A) and use a flathead screwdriver to tighten the locking screw (completely tighten the locking screw).

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  (2) Pass the SSTs assembled in step (1) through the piston pin hole.

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  (3) Assemble the SST (49 L011 006A) to the SST (49 E0011 002A) which is passed through the piston pin hole.

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3. Assemble the SST (49 D011 002B) to the SST (49 L011 001).

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4. Set the piston assembled with the SST on the SST (49 D011 002B) horizontally. At this time, set the piston head so that it is facing the direction of the arrow on the SST (49 D001 002B).

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  Caution
  • To prevent the piston from tilting when the hydraulic press contacts the SST (49 L011 006A), support the piston by hand until the hydraulic press contacts the SST.
  If the piston is tilted, it may be damaged at the time of compression.

5. Press out the piston pin using the hydraulic press.

Lower Cylinder Block Disassembly Note

  Caution
  • When removing the main bearing and reusing them, put a paint mark showing the front end and the journal number before the removal.

1. Inspect the crankshaft end play. (See CRANKSHAFT INSPECTION.)

2. Loosen the lower cylinder block installation bolts in the order shown in the figure.

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