CYLINDER BLOCK REASSEMBLY

CAUTION / NOTICE / HINT

Tech Tips

Perform "Inspection After Repairs" after replacing the piston or piston ring.

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PROCEDURE


  1. INSTALL NO. 1 OIL NOZZLE SUB-ASSEMBLY


    1. Using a 5 mm hexagon wrench, install the No. 1 oil nozzle sub-assemblies with the 3 bolts.

      Torque:
      9.0 N*m  { 92 kgf*cm, 80 in.*lbf }

  2. INSTALL CONNECTING ROD SMALL END BUSH


    1. B003VVXC01
      *a Oil Hole

      Align the oil holes of a new connecting rod small end bush and the connecting rod sub-assembly.

    2. B003WEHE02

      Using SST and a press, press in the connecting rod small end bush.

      SST
      09222-30010
    3. B003TPC

      Using a pin hole grinder, hone the bush to obtain the specified clearance between the bush and piston pin.

      Standard oil clearance
      -0.005 to 0.011 mm (-0.00019 to 0.00043 in.)

    4. Check that the piston pin fits at normal room temperature.

    5. Coat the piston pin with engine oil, and push it into the connecting rod with your thumb.

  3. INSTALL PISTON WITH PIN SUB-ASSEMBLY

    Tech Tips

    Perform "Inspection After Repairs" after replacing the piston.

    Click here


    1. B003WI8C06
      *a Cutout Portion

      Using a screwdriver, install a new piston pin hole snap ring at one end of the piston pin hole.

      Tech Tips

      Confirm that the end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.

    2. Gradually heat the piston to approximately 80°C (176°F).

    3. Coat the piston pin with engine oil.

    4. B003WOGC03
      *a Piston RH
      *b Piston LH
      *c Front Mark

      Align the front marks of the piston and connecting rod sub-assembly, and push in the piston pin with your thumb.

      Tech Tips

      The piston and pin are a matched set.

    5. Check the fitting condition between the piston and piston pin by trying to move the piston back and forth on the piston pin.

    6. B003VDIC06
      *a Cutout Portion

      Using a screwdriver, install a new piston pin hole snap ring at the other end of the piston pin hole.

      Tech Tips

      Confirm that the end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.

  4. INSTALL PISTON RING SET

    Tech Tips

    Perform "Inspection After Repairs" after replacing the piston ring.

    Click here


    1. Install the oil ring expander and 2 side rails by hand.

    2. B003UVNC03
      *1 No. 1 Compression Ring
      *2 No. 2 Compression Ring
      *a Code Mark

      Using a piston ring expander, install the 2 compression rings so that the painted marks are positioned as shown in the illustration.

      Tech Tips


      • Install the No. 1 compression ring with the code mark (T1) facing upward.


      • Install the No. 2 compression ring with the code mark (T2) facing upward.

    3. B003TZFC03
      *1 No. 1 Compression Ring
      *2 No. 2 Compression Ring
      *3 Lower Side Rail
      *4 Upper Side Rail
      *5 Oil Ring Expander
      *a Front Mark

      Position the piston rings so that the ring ends are as shown in the illustration.

      Note

      Do not align the ring ends.

  5. INSTALL CRANKSHAFT BEARING


    1. B003W1JC21
      *a No. 1 and No. 4 Journal Bearing
      *b No. 2 and No. 3 Journal Bearing
      *c 21.0 mm (0.827 in.)
      *d 18.0 mm (0.709 in.)

      Clean the main journal and both surfaces of the bearings.

      Note

      Main bearings come in widths between 18.0 mm (0.709 in.) and 21.0 mm (0.827 in.). Install the 21.0 mm (0.827 in.) bearings in the No. 1 and No. 4 cylinder block journal positions with the main bearing cap. Install the 18.0 mm (0.709 in.) bearings in the No. 2 and No. 3 positions.

    2. B003W7CC01
      *1 Upper Crankshaft Bearing
      *a Correct
      *b Incorrect

      Install the upper crankshaft bearing.


      1. Install the upper crankshaft bearings to the cylinder block as shown in the illustration.

        Note


        • Do not apply engine oil to the bearings and the contact surfaces.

        • Both sides of the oil groove in the cylinder block should be visible through the oil feed holes in the bearing. The amount visible on each side of the holes should be equal.

        • Do not allow coolant to come into contact with the bearing inner surface.

        • If any coolant comes into contact with the bearing inner surface, replace the bearing with a new one.

    3. B003VDZC11
      *a Vernier Caliper
      *b Mark 1, 2, 3, 4 or 5

      Install the lower crankshaft bearing.


      1. Install the lower crankshaft bearings to the crankshaft bearing caps.

      2. Using a vernier caliper, measure the distance between the crankshaft bearing cap edge and the lower crankshaft bearing edge.

        Standard dimension (A - B or B - A)
        0.7 mm (0.0276 in.) or less

        Note


        • Do not apply engine oil to the crankshaft bearings and the contact surfaces.

        • Do not allow coolant to come into contact with the bearing inner surface.

        • If any coolant comes into contact with the bearing inner surface, replace the bearing with a new one.

  6. INSTALL CRANKSHAFT THRUST WASHER SET


    1. Apply engine oil to the crankshaft thrust washer.

    2. B003X64C06
      *a Oil Grooves

      Install the 2 upper crankshaft thrust washers under the No. 2 journal position of the cylinder block sub-assembly with the oil grooves facing outward.

  7. INSTALL CRANKSHAFT


    1. Apply engine oil to the upper bearing, and then place the crankshaft on the cylinder block.

    2. B003UWX

      Confirm the projections and numbers on the main bearing caps and install the crankshaft bearing caps on the cylinder block.

      Tech Tips

      A number is marked on each main bearing cap to indicate the installation position.

    3. Apply a light coat of engine oil to the threads and under the heads of the crankshaft bearing cap bolts.

    4. Temporarily install the 8 crankshaft bearing cap bolts to the inside positions.

    5. B003TG4C01
      *a Less than 6 mm (0.236 in.)
      *b Threaded Hole

      Tighten the 2 bolts A for each bearing cap until the clearance between the crankshaft bearing cap and the cylinder block becomes less than 6 mm (0.236 in.).

      Tech Tips

      Type A and type B can be distinguished by the shape of the bearing cap bolt.

      Bolt Type
      Type Shape
      A Without threaded hole
      B With threaded hole
    6. B003WJL

      Using a plastic-faced hammer, lightly tap the crankshaft bearing cap to ensure a proper fit.

    7. Apply a light coat of engine oil to the threads and under the heads of the 8 crankshaft bearing cap bolts.

    8. B003XA4N01

      Install the crankshaft bearing cap bolt A and 7 crankshaft bearing cap bolts B to the outside positions.

      Tech Tips

      The crankshaft bearing cap bolts are tightened in 2 progressive steps.

    9. B003X10N02

      Install and uniformly tighten the 16 crankshaft bearing cap bolts in several steps and in the sequence shown in the illustration.

      Torque:
      61 N*m  { 622 kgf*cm, 45 ft.*lbf }

      If any of the crankshaft bearing cap bolts does not meet the torque specified, replace it.

    10. B003TPEC07
      *a Paint Mark
      *b 90°
      B003WAF Front Side

      Mark the front of the bearing cap bolts with paint.

    11. Tighten the cap bolts another 90°.

    12. Check that the painted marks are now at a 90° angle to the front of the engine.

    13. B003UDIC01
      *a Bolt Type
      *b Tightening Order

      Install 8 new seal washers and uniformly tighten the 8 crankshaft bearing cap bolts in several steps and in the sequence shown in the illustration.

      Torque:
      25.7 N*m  { 262 kgf*cm, 19 ft.*lbf }
      Bolt Length
      Item Specified Condition
      Bolt C 45 mm (1.77 in.)
      Bolt D 30 mm (1.18 in.)

    14. Check that the crankshaft turns smoothly.

    15. Check the crankshaft thrust clearance Click here.

  8. INSTALL CONNECTING ROD BEARING


    1. Install the connecting rod bearings to the connecting rod sub-assembly and connecting rod cap.

    2. B003TV5C01
      *a Vernier Caliper

      Using a vernier caliper, measure the distance between each connecting rod bearing edge and the connecting rod edges, and the connecting rod cap edges respectively.

      Standard dimension (A - B or B - A)
      0.7 mm (0.0276 in.) or less

      Note

      Do not apply engine oil to the bearings and the contact surfaces.

  9. INSTALL PISTON SUB-ASSEMBLY WITH CONNECTING ROD


    1. Apply engine oil to the cylinder walls, the pistons, and the surfaces of the connecting rod bearings.

    2. B003TZFC03
      *1 No. 1 Compression Ring
      *2 No. 2 Compression Ring
      *3 Lower Side Rail
      *4 Upper Side Rail
      *5 Expander
      *a Front Mark

      Position the piston rings so that the ring ends are as shown in the illustration.

      Note

      Do not align the ring ends.

    3. B003ULDC01
      *a Piston RH
      *b Piston LH
      *c Front Mark
      B003WAF Engine Front

      Using a piston ring compressor, push the correctly numbered piston and connecting rod assembly into the cylinder with the front mark of the piston facing forward.

      Note

      Match the numbered connecting rod cap with the connecting rod.

    4. B003UWOC05
      *a Front Mark
      B003WAF Engine Front

      Check that the front mark of the connecting rod cap is facing forward.

    5. Apply a light coat of engine oil to the threads and under the heads of the connecting rod cap bolts.

    6. Install the 2 connecting rod cap bolts.

      Tech Tips

      The cap bolts are tightened in 2 progressive steps.

    7. B003V35

      Install and alternately tighten the connecting rod cap bolts of each connecting rod cap in several steps.

      Torque:
      24.5 N*m  { 250 kgf*cm, 18 ft.*lbf }
    8. B003TPEC07
      *a Paint Mark
      *b 90°
      B003WAF Front Side

      Mark the front side of each connecting rod cap bolt with paint.

    9. Tighten the cap bolts 90°.

    10. Check that the paint marks are now at a 90° angle to the front.

    11. Check that the crankshaft turns smoothly.

  10. INSPECT CONNECTING ROD THRUST CLEARANCE

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