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CYLINDER BLOCK INSPECTION

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Info Added 2017-08-02

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PROCEDURE


  1. Click here

    INSPECT CYLINDER BLOCK FOR WARPAGE


    1. A0005QM

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

      Maximum warpage
      0.05 mm (0.00197 in.)

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

  2. Click here

    INSPECT CYLINDER BORE


    1. A0007L2E18

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

      Table 1. Text in Illustration
      *a Axial Direction
      *b Thrust Direction
      *c Center
      A0005GR Front
      Standard diameter
      90.000 to 90.013 mm (3.543 to 3.544 in.)
      Maximum diameter
      90.13 mm (3.548 in.)

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

  3. Click here

    INSPECT PISTON


    1. A0004OF

      Using a gasket scraper, remove the carbon from the piston top.

    2. A0008YD

      Using a groove cleaning tool or a broken ring, clean the piston ring grooves.

    3. A0005TQ

      Using a brush and solvent, thoroughly clean the piston.

      Note:

      Do not use a wire brush.

    4. A0009PHE01
      Table 2.
      *1 10.5 mm

      Using a micrometer, measure the piston diameter at a right angle to the piston center line, and at a position that is 10.5 mm (0.413 in.) from the bottom of the piston.

      Standard piston diameter
      89.980 to 89.995mm (3.5425 to 3.5431 in.)

      If the diameter is less than the minimum, replace the piston.

  4. Click here

    INSPECT PISTON OIL CLEARANCE


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

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

      Standard oil clearance
      0.004 to 0.043 mm (0.000157 to 0.00169 in.)
      Maximum oil clearance
      0.10 mm (0.00394 in.)

      If the oil clearance is more than the maximum, replace all the pistons. If necessary, replace the cylinder block sub-assembly.

  5. Click here

    INSPECT RING GROOVE CLEARANCE

    Tip:

    Type A and type B can be distinguished by the mark on the piston and the shape of the oil ring.

    Table 3. Text in Illustration
    *A Type A *B Type B
    *1 Piston *2 Oil Ring

    1. A0005IM

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

      Standard Ring Groove Clearance (for Type A)
      Item Specified Condition
      No. 1 ring 0.020 to 0.070 mm (0.000787 to 0.00276 in.)
      No. 2 ring 0.020 to 0.060 mm (0.000787 to 0.00236 in.)
      Oil ring 0.020 to 0.070 mm (0.000787 to 0.00276 in.)
      Standard Ring Groove Clearance (for Type B)
      Item Specified Condition
      No. 1 ring 0.020 to 0.070 mm (0.000787 to 0.00276 in.)
      No. 2 ring 0.020 to 0.060 mm (0.000787 to 0.00236 in.)
      Oil ring 0.060 to 0.120 mm (0.00236 to 0.00472 in.)

      If the groove clearance is not as specified, replace the piston.

  6. Click here

    INSPECT PISTON RING END GAP

    Tip:

    Type A and type B can be distinguished by the mark on the piston and the shape of the oil ring.

    Table 4. Text in Illustration
    *A Type A *B Type B
    *1 Piston *2 Oil Ring

    1. A0003P1E03

      Insert the piston ring into the cylinder bore.

      Table 5. Text in Illustration
      *1 Piston Ring

    2. Using a piston, push the piston ring a little beyond the bottom of the ring travel, 120 mm (4.72 in.) from the top of the cylinder block sub-assembly.

    3. A0004RB

      Using a feeler gauge, measure the end gap.

      Standard End Gap (for Type A)
      Item Specified Condition
      No. 1 compression ring 0.22 to 0.27 mm (0.00866 to 0.0106 in.)
      No. 2 compression ring 0.37 to 0.42 mm (0.0146 to 0.0165 in.)
      Oil ring 0.10 to 0.20 mm (0.00394 to 0.00787 in.)
      Standard End Gap (for Type B)
      Item Specified Condition
      No. 1 compression ring 0.22 to 0.27 mm (0.00866 to 0.0106 in.)
      No. 2 compression ring 0.50 to 0.55 mm (0.0197 to 0.0217 in.)
      Oil ring 0.10 to 0.35 mm (0.00394 to 0.0138 in.)
      Maximum End Gap (for Type A)
      Item Specified Condition
      No. 1 compression ring 0.87 mm (0.0343 in.)
      No. 2 compression ring 1.02 mm (0.0402 in.)
      Oil ring 0.80 mm (0.0315 in.)
      Maximum End Gap (for Type B)
      Item Specified Condition
      No. 1 compression ring 0.87 mm (0.0343 in.)
      No. 2 compression ring 1.15 mm (0.0453 in.)
      Oil ring 0.95 mm (0.0374 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.

  7. Click here

    INSPECT PISTON PIN OIL CLEARANCE


    1. A0005LZE02

      Check each mark on the piston, piston pin and connecting rod sub-assembly.

      Table 6. Text in Illustration
      *a Front Mark *b Piston Pin Hole Inside Diameter Mark
      *c Connecting Rod Small End Bush Inside Diameter Mark - -
      Tip:

      The front mark is "2H" printed in raised letters.

    2. A0003TN

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

      Standard Piston Pin Hole Inside Diameter
      Item Specified Condition
      Mark A 22.001 to 22.004 mm (0.86618 to 0.86630 in.)
      Mark B 22.005 to 22.007 mm (0.86634 to 0.86642 in.)
      Mark C 22.008 to 22.010 mm (0.86645 to 0.86653 in.)
    3. A0008BQE24
      Table 7.
      *1 5 mm (0.197 in.)
      *2 28 mm (1.10 in.)

      Using a micrometer, measure the piston pin diameter.

      Standard Piston Pin Diameter
      Item Specified Condition
      Mark A 21.997 to 22.000 mm (0.86602 to 0.86614 in.)
      Mark B 22.001 to 22.003 mm (0.86617 to 0.86626 in.)
      Mark C 22.004 to 22.006 mm (0.86630 to 0.86638 in.)

      If the diameter is not as specified, replace the piston pin.

    4. A0003EU

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

      Standard Connecting Rod Small End Bush Inside Diameter
      Item Specified Condition
      Mark A 22.005 to 22.008 mm (0.86634 to 0.86645 in.)
      Mark B 22.009 to 22.011 mm (0.86649 to 0.86657 in.)
      Mark C 22.012 to 22.014 mm (0.86661 to 0.86669 in.)

      If the diameter is not as specified, replace the connecting rod sub-assembly.

    5. Subtract the piston pin diameter measurement from the piston pin hole inside diameter measurement.

      Standard oil clearance
      0.001 to 0.007 mm (0.0000394 to 0.000276 in.)
      Maximum oil clearance
      0.013 mm (0.000512 in.)

      If the oil clearance is more than the maximum, replace the piston and piston pin as a set.

    6. Subtract the piston pin diameter measurement from the connecting rod small end bush inside diameter measurement.

      Standard oil clearance
      0.005 to 0.011 mm (0.000197 to 0.000433 in.)
      Maximum oil clearance
      0.017 mm (0.000669 in.)

      If the oil clearance is more than the maximum, replace the connecting rod sub-assembly. If necessary, replace the connecting rod sub-assembly and piston pin as a set.

  8. Click here

    INSPECT CONNECTING ROD SUB-ASSEMBLY


    1. A0003NK

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


      1. Check for bend.

        Maximum bend
        0.05 mm (0.00197 in.) per 100 mm (3.94 in.)

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

      2. A0005XR

        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. Click here

    INSPECT CRANKSHAFT


    1. A0007CZ

      Inspect for circle runout.


      1. Using a dial indicator and V-blocks, measure the circle runout as shown in the illustration.

        Maximum circle runout
        0.03 mm (0.00118 in.)

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

    2. A0003P8

      Inspect the main journals.


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

        Standard main journal diameter
        54.988 to 55.000 mm (2.1649 to 2.1654 in.)

        If the diameter is not as specified, check the crankshaft 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
        0.003 mm (0.000118 in.)

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

    3. A0006TB

      Inspect the crank pin.


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

        Standard crank pin diameter
        51.492 to 51.500 mm (2.027 to 2.028 in.)

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

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

        Maximum taper and out-of-round
        0.003 mm (0.000118 in.)

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

  10. Click here

    INSPECT CRANKSHAFT OIL CLEARANCE


    1. Install the crankshaft bearings (Click here).

    2. Install the crankshaft thrust washers (Click here).

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

    4. A0008HRE01

      Lay a strip of Plastigage across each journal.

      Table 8. Text in Illustration
      *1 Plastigage

    5. Install the crankshaft bearing caps (Click here).

      Note:

      Do not turn the crankshaft.

    6. Remove the crankshaft bearing caps (Click here).

    7. A0009NNE01

      Measure the Plastigage at its widest point.

      Table 9. Text in Illustration
      *1 Plastigage
      Standard oil clearance
      0.016 to 0.039 mm (0.000630 to 0.00154 in.)
      Maximum oil clearance
      0.05 mm (0.00197 in.)
      Note:

      Remove the Plastigage completely after the measurement.

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

      A0006MJE03
      Tip:

      If replacing a bearing, select a new one with the same number. If the number of the bearing cannot be determined, calculate the correct bearing number by adding together the numbers imprinted on the cylinder block sub-assembly and crankshaft. Then select a new bearing with the calculated number. There are 4 sizes of standard bearings, marked "1", "2", "3" and "4" accordingly.

      Table 10. Text in Illustration
      *a Cylinder Block Number Mark (A) *b Crankshaft Number Mark (B)
      *c Diameter Mark - -

      • EXAMPLE

        Cylinder block (A) "3" + Crankshaft (B) "4" = Total "7"

        Select the bearing marked "3".

        Bearing Chart
        (A) + (B) Use Bearing
        0 to 2 1
        3 to 5 2
        6 to 8 3
        9 to 11 4
        Standard Cylinder Block Journal Inside Diameter (A)
        Item Specified Condition
        Mark 0 59.000 to 59.002 mm (2.32283 to 2.32291 in.)
        Mark 1 59.003 to 59.004 mm (2.32295 to 2.32299 in.)
        Mark 2 59.005 to 59.006 mm (2.32303 to 2.32307 in.)
        Mark 3 59.007 to 59.009 mm (2.32311 to 2.32318 in.)
        Mark 4 59.010 to 59.011 mm (2.32322 to 2.32326 in.)
        Mark 5 59.012 to 59.013 mm (2.32330 to 2.32334 in.)
        Mark 6 59.014 to 59.016 mm (2.32338 to 2.32346 in.)
        Standard Crankshaft Main Journal Diameter (B)
        Item Specified Condition
        Mark 0 54.999 to 55.000 mm (2.16531 to 2.16535 in.)
        Mark 1 54.997 to 54.998 mm (2.16523 to 2.16527 in.)
        Mark 2 54.995 to 54.996 mm (2.16515 to 2.16519 in.)
        Mark 3 54.993 to 54.994 mm (2.16507 to 2.16511 in.)
        Mark 4 54.991 to 54.992 mm (2.16500 to 2.16504 in.)
        Mark 5 54.988 to 54.990 mm (2.16488 to 2.16496 in.)
        Standard Bearing Center Wall Thickness
        Item Specified Condition
        Mark 1 1.991 to 1.994 mm (0.07839 to 0.07850 in.)
        Mark 2 1.995 to 1.997 mm (0.07854 to 0.07862 in.)
        Mark 3 1.998 to 2.000 mm (0.07866 to 0.07874 in.)
        Mark 4 2.001 to 2.003 mm (0.07878 to 0.07886 in.)

    8. Perform the inspection above for each journal.

  11. Click here

    INSPECT CRANKSHAFT BEARING CAP BOLT


    1. A0007SRE01

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

      Table 11. Text in Illustration
      *a Measurement Point
      Standard diameter
      9.77 to 9.96 mm (0.385 to 0.392 in.)
      Minimum diameter
      9.1 mm (0.358 in.)
      Tip:

      • If the diameter is less than the minimum, replace the crankshaft bearing cap bolt. Failure to do so may lead to engine damage.

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

  12. Click here

    INSPECT CONNECTING ROD BOLT


    1. A0003QXE32

      Using a vernier caliper, measure the diameter of the bolt in the area shown in the illustration.

      Table 12. Text in Illustration
      *a Measurement Area
      Standard diameter
      8.5 to 8.6 mm (0.335 to 0.339 in.)
      Minimum diameter
      8.3 mm (0.327 in.)
      Tip:

      • 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.

  13. Click here

    INSPECT NO. 1 OIL NOZZLE SUB-ASSEMBLY


    1. A00082D

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

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

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

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

    3. A0006DNE01

      Apply air into A. Check that air does not leak through B.

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

    4. A0004QVE04

      Push the check valve while applying air into A. Check that air passes through B.

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

  14. Click here

    INSPECT NO. 2 OIL NOZZLE SUB-ASSEMBLY


    1. A00042R

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

      If stuck, replace the No. 2 oil nozzle sub-assembly.

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

      If it does not move smoothly, clean or replace the No. 2 oil nozzle sub-assembly.

    3. A0007VKE01

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

      If air leaks, clean or replace the No. 2 oil nozzle sub-assembly.

    4. A0004MKE04

      Push the check valve while covering A, and apply air into B. Check that air passes through C. Perform the check again while covering B, pushing the check valve and applying air into A.

      If air does not pass through C, clean or replace the No. 2 oil nozzle sub-assembly.