CYLINDER BLOCK INSPECTION

PROCEDURE


  1. INSPECT CYLINDER BLOCK FOR WARPAGE


    1. A01MYKKC02
      *1 Feeler Gauge
      *2 Precision Straightedge

      Using a precision straightedge and feeler gauge, measure the warpage of the surface witch contact the cylinder head gaskets.

      Standard warpage
      0 to 0.05 mm (0 to 0.00197 in.)
      Maximum warpage
      0.07 mm (0.00276 in.)

      If the warpage is more than the maximum, replace the cylinder block sub-assembly.

  2. INSPECT CYLINDER BORE


    1. Visually check the cylinder for vertical scratches.

      If deep scratches are present, rebore all 6 cylinders. If necessary, replace the cylinder block sub-assembly.

    2. A01MYWDC04
      *a Thrust Direction
      *b Axial Direction
      *c 10 mm (0.394 in.)
      *d Center
      B003WAF Engine Front

      Using a cylinder gauge, measure the cylinder bore diameter at positions A and B in the thrust and axial directions.

      Reference value (New parts)
      83.000 to 83.012 mm (3.2677 to 3.2682 in.)
      Maximum diameter
      83.13 mm (3.27 in.)

      If the average diameter of 4 positions is more than the maximum, replace the cylinder block sub-assembly.

  3. INSPECT PISTON SUB-ASSEMBLY WITH PIN


    1. A01MVU0C02
      *a for Bank 1
      *b for Bank 2
      *c Distance

      Using a micrometer, measure the piston diameter at right angles to the piston center line where the distance from the piston end is as specified.

      Distance
      14.3 mm (0.563 in.)
      Reference value (New Parts)
      82.960 to 82.970 mm (3.2661 to 3.2665 in.)
      Minimum diameter
      82.846 mm (3.2616 in.)

      If the piston diameter is less than the minimum, replace the piston sub-assembly with pin.

  4. INSPECT PISTON OIL CLEARANCE


    1. Measure the cylinder bore diameter in the thrust directions.

    2. Subtract the piston diameter measurement from the cylinder bore diameter measurement.

      Reference value (New Parts)
      0.030 to 0.052 mm (0.00118 to 0.00205 in.)
      Maximum oil clearance
      0.072 mm (0.00284 in.)

      If the oil clearance is more than the maximum, replace the piston sub-assembly with pin or cylinder block sub-assembly according to their measurement values.

  5. INSPECT RING GROOVE CLEARANCE


    1. A01MY0DC02
      *1 Feeler Gauge

      Using a feeler gauge, measure the clearance between a new piston ring and the wall of the ring groove.

      Standard Ring Groove Clearance
      Item Specified Condition
      No. 1 Compression Ring

      0.020 to 0.070 mm

      (0.00079 to 0.00276 in.)
      No. 2 Compression Ring

      0.030 to 0.070 mm

      (0.00118 to 0.00276 in.)
      Oil Ring

      0.020 to 0.070 mm

      (0.00079 to 0.00276 in.)

      If the clearance is not as specified, replace the piston sub-assembly with pin.

  6. INSPECT PISTON PIN OIL CLEARANCE


    1. A01MY81C05
      *1 Front Mark
      *2 Piston Pin Hole Inside Diameter Mark
      *3 Connecting Rod Bushing Inside Diameter Mark
      *a for Bank 1
      *b for Bank 2

      Check each mark on the piston and connecting rod.

      Tech Tips

      Do not change the combination of the piston and piston pin.

    2. A01MWP5C03
      *1 Caliper Gauge

      Using a caliper gauge, measure the inside diameter of the piston pin hole.

      Standard Piston Pin Hole Inside Diameter
      Mark Specified Condition
      A

      21.998 to 22.001 mm

      (0.86606 to 0.86618 in.)
      B

      22.002 to 22.004 mm

      (0.86622 to 0.86630 in.)
      C

      22.005 to 22.007 mm

      (0.86634 to 0.86642 in.)
    3. A01MYCUC01
      *a 5 mm (0.197 in.)
      *b 28 mm (1.10 in.)

      Using a micrometer, measure the piston pin diameter.

      Standard Piston Pin Diameter
      Mark Specified Condition
      A

      21.997 to 22.000 mm

      (0.86602 to 0.86614 in.)
      B

      22.001 to 22.003 mm

      (0.86618 to 0.86626 in.)
      C

      22.004 to 22.006 mm

      (0.86630 to 0.86638 in.)

    4. Subtract the piston pin diameter measurement from the piston pin hole diameter measurement.

      Standard oil clearance
      -0.002 to 0.004 mm (-0.00008 to 0.00016 in.)
      Maximum oil clearance
      0.015 mm (0.00059 in.)

      If the oil clearance is more than the maximum, replace the piston sub-assembly with pin.

    5. A01MYE0C03
      *1 Caliper Gauge

      Using a caliper gauge, measure the inside diameter of the connecting rod small end bush.

      Standard Bushing Inside Diameter
      Mark Specified Condition
      A

      22.005 to 22.008 mm

      (0.86634 to 0.86645 in.)
      B

      22.009 to 22.011 mm

      (0.86649 to 0.86657 in.)
      C

      22.012 to 22.014 mm

      (0.86661 to 0.86669 in.)

    6. Subtract the piston pin diameter measurement from the bushing inside diameter measurement.

      Standard oil clearance
      0.005 to 0.011 mm (0.00020 to 0.00043 in.)
      Maximum oil clearance
      0.030 mm (0.00118 in.)

      If the oil clearance is more than the maximum, replace the connecting rod small end bush.

      If necessary, replace the connecting rod sub-assembly and piston sub-assembly with pin.

  7. INSPECT PISTON RING END GAP


    1. A001K30C03
      *1 Piston Ring
      *a Approximately 110 mm (4.33 in.)

      Insert the piston ring into the cylinder bore.

    2. Using a piston, push the piston ring slightly beyond the bottom of the ring travel, 110 mm (4.33 in.) from the top of the cylinder block sub-assembly.

    3. Using a feeler gauge, measure the end gap.

      Standard End Gap
      Item Specified Condition
      No. 1 Compression Ring

      0.20 to 0.25 mm

      (0.00787 to 0.00984 in.)
      No. 2 Compression Ring

      0.35 to 0.40 mm

      (0.01378 to 0.01575 in.)
      Oil Ring

      0.10 to 0.20 mm

      (0.00394 to 0.0787 in.)
      Maximum End Gap
      Item Specified Condition
      No. 1 Compression Ring 0.50 mm (0.0197 in.)
      No. 2 Compression Ring 0.80 mm (0.0315 in.)
      Oil Ring 0.65 mm (0.0256 in.)

      If the end gap is more than the maximum, replace the piston ring.

      If the end gap is more than the maximum even with a new piston ring, replace the cylinder block sub-assembly.

  8. INSPECT CONNECTING ROD SUB-ASSEMBLY


    1. Using a rod aligner and feeler gauge, check the connecting rod alignment.


      1. A01MXZCC01
        *1 Feeler Gauge

        Check for out-of-alignment.

        Maximum out-of-alignment
        0.05 mm (0.00197 in.) per 100 mm (3.94 in.)

        If the out-of-alignment is more than the maximum, replace the connecting rod sub-assembly.

      2. A01MUDJC01
        *1 Feeler Gauge

        Check for twist.

        Maximum twist
        0.15 mm (0.00591 in.) per 100 mm (3.94 in.)

        If the twist is more than the maximum, replace the connecting rod sub-assembly.

  9. INSPECT CONNECTING ROD BOLT


    1. A01MVURC22
      *a Measurement Area

      Using a vernier caliper, measure the diameter of the connecting rod bolt at several points within the area shown in the illustration.

      Standard diameter
      7.2 to 7.3 mm (0.283 to 0.287 in.)
      Minimum diameter
      7.0 mm (0.276 in.)

      If the diameter is less than the minimum, replace the connecting rod bolt.

      Tech Tips


      • Diameter measurements should be done at several points.

      • If the diameter is less than the minimum, replace the connecting rod bolt with a new one.

        Failure to do so may lead to engine damage.

      • If there is any thread deformation, replace the connecting rod bolt with a new one.

  10. INSPECT CRANKSHAFT


    1. Inspect runout.


      1. Clean the crank journal.

      2. Place the crankshaft on V-blocks.

      3. Using a dial indicator, measure the runout at the center journal.

        Maximum runout
        0.06 mm (0.00236 in.)

        If the runout is more than the maximum, replace the crankshaft.

    2. Inspect the main journals.


      1. A001KP9

        Using a micrometer, measure the diameter of each main journal.

        Standard journal diameter
        60.988 to 61.000 mm (2.4011 to 2.4016 in.)

        If the diameter is not as specified, check the oil clearance. If necessary, replace the crankshaft.

      2. Check each main journal for taper and out-of-round as shown in the illustration.

        Maximum taper and out-of-round
        0.02 mm (0.00079 in.)

        If the taper and out-of-round is more than the maximum, replace the crankshaft.

    3. Inspect the crank pins.


      1. A001HKH

        Using a micrometer, measure the diameter of each crank pin.

        Standard crank pin diameter
        47.992 to 48.000 mm (1.889 to 1.890 in.)

        If the diameter is not as specified, check the oil clearance. If necessary, replace the crankshaft.

      2. Check each crank pin for taper and out-of-round as shown in the illustration.

        Maximum taper and out-of-round
        0.02 mm (0.00079 in.)

        If the taper and out-of-round is more than the maximum, replace the crankshaft.

  11. INSPECT CRANKSHAFT OIL CLEARANCE


    1. Check the crank journal and crankshaft bearing for pitting and scratches.

    2. Install the crankshaft bearing.

      Click here

    3. Place the crankshaft on the cylinder block sub-assembly.

    4. A01MUZEC04
      *1 Plastigage

      Lay a strip of Plastigage across each journal.

    5. Confirm the front marks and numbers to install the crankshaft bearing caps on the cylinder block sub-assembly.

      Tech Tips

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

    6. Install the crankshaft bearing caps.

      Click here

      Note


      • Do not apply engine oil to the crankshaft bearings or crankshaft journals.

      • Do not turn the crankshaft.

    7. Remove the crankshaft bearing caps.

      Click here

    8. A01MUWWC03
      *1 Plastigage

      Measure the Plastigage at its widest point.

      Standard Oil Clearance
      0.026 to 0.047 mm (0.00102 to 0.00185 in.)
      Maximum Oil Clearance
      0.05 mm (0.00197 in.)

      If the oil clearance is more than the maximum, replace the crankshaft bearings. If necessary, replace the crankshaft.

      Note

      Completely remove the Plastigage after the measurement.

    9. If replacing a bearing, replace it with one having the same number.

      If the number of the bearing cannot be determined, select the correct bearing by adding together the numbers imprinted on the cylinder block and crankshaft, and then refer to the table below for the appropriate bearing number.

      There are 5 sizes of standard bearings, marked "1", "2", "3", "4" and "5" accordingly.

      Journal Bearings
      Cylinder block + Crankshaft 0 - 5 6 - 11 12 - 17 18 - 23 24 - 28
      Bearing to be used "1" "2" "3" "4" "5"
      A01MUBKC06
      *1 Cylinder Block Main Journal Diameter Number Mark *2 Crankshaft Main Journal Diameter Number Mark
      *3 Bearing Number *4 No. 1 and No. 4 Journal Bearing
      *5 No. 2 and No. 3 Journal Bearing *6 No. 1
      *7 No. 2 *8 No. 3
      *9 No. 4 *a 21 mm (0.827 in.)
      *b 18 mm (0.709 in.) - -

      Tech Tips

      EXAMPLE: Cylinder block "11"(A) + Crankshaft "06"(B) = Total number 17 (Use bearing "3")

      Standard Cylinder Block Main Journal Bore Diameter (A)
      Mark Specified Condition
      "00" 66.000 mm (2.59842 in.)
      "01" 66.001 mm (2.59846 in.)
      "02" 66.002 mm (2.59850 in.)
      "03" 66.003 mm (2.59854 in.)
      "04" 66.004 mm (2.59858 in.)
      "05" 66.005 mm (2.59862 in.)
      "06" 66.006 mm (2.59866 in.)
      "07" 66.007 mm (2.59870 in.)
      "08" 66.008 mm (2.59874 in.)
      "09" 66.009 mm (2.59877 in.)
      "10" 66.010 mm (2.59881 in.)
      "11" 66.011 mm (2.59885 in.)
      "12" 66.012 mm (2.59889 in.)
      "13" 66.013 mm (2.59893 in.)
      "14" 66.014 mm (2.59897 in.)
      "15" 66.015 mm (2.59901 in.)
      "16" 66.016 mm (2.59905 in.)
      Standard Crankshaft Main Journal Diameter (B)
      Mark Specified Condition
      "00" 60.999 to 61.000 mm (2.40153 to 2.40157 in.)
      "01" 60.998 to 60.999 mm (2.40149 to 2.40153 in.)
      "02" 60.997 to 60.998 mm (2.40145 to 2.40149 in.)
      "03" 60.996 to 60.997 mm (2.40141 to 2.40145 in.)
      "04" 60.995 to 60.996 mm (2.40137 to 2.40141 in.)
      "05" 60.994 to 60.995 mm (2.40133 to 2.40137 in.)
      "06" 60.993 to 60.994 mm (2.40129 to 2.40133 in.)
      "07" 60.992 to 60.993 mm (2.40126 to 2.40129 in.)
      "08" 60.991 to 60.992 mm (2.40122 to 2.40126 in.)
      "09" 60.990 to 60.991 mm (2.40118 to 2.40122 in.)
      "10" 60.989 to 60.990 mm (2.40114 to 2.40118 in.)
      "11" 60.988 to 60.989 mm (2.40110 to 2.40114 in.)
      Standard Upper Bearing Center Wall Thickness (No. 1 and No. 4 journal)
      Mark Specified Condition
      "1" 2.500 to 2.503 mm (0.09843 to 0.09854 in.)
      "2" 2.503 to 2.506 mm (0.09854 to 0.09866 in.)
      "3" 2.506 to 2.509 mm (0.09866 to 0.09878 in.)
      "4" 2.509 to 2.512 mm (0.09878 to 0.09890 in.)
      "5" 2.512 to 2.515 mm (0.09890 to 0.09902 in.)
      Standard Lower Bearing Center Wall Thickness (No. 1 and No. 4 journal)
      Mark Specified Condition
      "1" 2.478 to 2.481 mm (0.09756 to 0.09768 in.)
      "2" 2.481 to 2.484 mm (0.09768 to 0.09780 in.)
      "3" 2.484 to 2.487 mm (0.09780 to 0.09791 in.)
      "4" 2.487 to 2.490 mm (0.09791 to 0.09803 in.)
      "5" 2.490 to 2.493 mm (0.09803 to 0.09815 in.)
      Standard Upper Bearing Center Wall Thickness (No. 2 and No. 3 journal)
      Mark Specified Condition
      "1" 2.478 to 2.481 mm (0.09756 to 0.09768 in.)
      "2" 2.481 to 2.484 mm (0.09768 to 0.09780 in.)
      "3" 2.484 to 2.487 mm (0.09780 to 0.09791 in.)
      "4" 2.487 to 2.490 mm (0.09791 to 0.09803 in.)
      "5" 2.490 to 2.493 mm (0.09803 to 0.09815 in.)
      Standard Lower Bearing Center Wall Thickness (No. 2 and No. 3 journal)
      Mark Specified Condition
      "1" 2.500 to 2.503 mm (0.09843 to 0.09854 in.)
      "2" 2.503 to 2.506 mm (0.09854 to 0.09866 in.)
      "3" 2.506 to 2.509 mm (0.09866 to 0.09878 in.)
      "4" 2.509 to 2.512 mm (0.09878 to 0.09890 in.)
      "5" 2.512 to 2.515 mm (0.09890 to 0.09902 in.)

  12. INSPECT CRANKSHAFT BEARING CAP SET BOLT


    1. A01MV68C02
      *1 Measurement Point

      Using a vernier caliper, measure the diameter of the threads at the measurement point.

      Standard diameter
      10.8 to 11.0 mm (0.4252 to 0.4331 in.)
      Minimum diameter
      10.7 mm (0.4213 in.)
      Measurement point (distance from the seat)
      47 mm (1.85 in.)

      Tech Tips


      • If the diameter is less than the minimum, replace the crankshaft bearing cap set bolt.

        Failure to do so may lead to engine damage.

      • If there is any thread deformation, replace the crankshaft bearing cap set bolt with a new one.

      • Diameter measurements should be done at several points.

  13. INSPECT NO. 1 OIL NOZZLE SUB-ASSEMBLY


    1. A01MZ0Z

      Push the check valve with a pin to check if it is stuck.

      Tech Tips

      If the check valve is stuck, replace the No. 1 oil nozzle sub-assembly.

    2. Push the check valve with a pin to check if it moves smoothly.

      If the check valve does not move smoothly, clean or replace the No. 1 oil nozzle sub-assembly.

    3. A01MXVSN07

      While covering A, blow air into B. Check that air does not leak through C. Perform the check again while covering B and blowing air into A.

      If air leaks, clean or replace the No. 1 oil nozzle sub-assembly.

    4. A01MWMZN09

      Push the check valve while covering A, and blow air into B.

      Check that air passes through C.

      Perform the check again while covering B, pushing the check valve and blowing air into A.

      If air does not pass through C, clean or replace the No. 1 oil nozzle sub-assembly.