БЛОК ДВИГАТЕЛЯ ПРОВЕРКА

PROCEDURE

  1. INSPECT CHAIN SUB-ASSEMBLY

    1. Using a spring scale, pull the chain sub-assembly with a force of 147 N (15 kgf, 33 lbf) as shown in the illustration.

      A012G0YC04
      *a Measurement Area

    2. Using a vernier caliper, measure the length of 16 pins.

      Maximum Chain Elongation
      144.3 mm (5.68 in.)
      Note:

      Perform the measurement at 3 random places.

      If the elongation is more than the maximum, replace the chain sub-assembly.

  2. INSPECT NO. 1 CHAIN TENSIONER ASSEMBLY

    1. Move the stopper plate upward to release the lock. Push the plunger and check that it moves smoothly.

      A012IRUC04
      *a Plunger
      *b Stopper Plate

  3. INSPECT CAMSHAFT TIMING SPROCKET

    1. Wrap the chain sub-assembly around the camshaft timing sprocket.

    2. Using a vernier caliper, measure the camshaft timing sprocket diameter with the chain sub-assembly.

      A012K21
      Minimum Sprocket with Chain Sub-assembly Diameter
      132.6 mm (5.22 in.)
      Tip:

      The vernier caliper must contact the chain rollers for the measurement.

      If the diameter is less than the minimum, replace the chain sub-assembly and camshaft timing sprocket.

  4. INSPECT CRANKSHAFT TIMING SPROCKET

    1. Wrap the chain sub-assembly around the crankshaft timing sprocket.

    2. Using a vernier caliper, measure the crankshaft sprocket diameter with the chain sub-assembly.

      A012HPB
      Minimum Sprocket with Chain Sub-assembly Diameter
      69.1 mm (2.72 in.)
      Tip:

      The vernier caliper must contact the chain rollers for the measurement.

      If the diameter is less than the minimum, replace the chain sub-assembly and crankshaft timing sprocket.

  5. INSPECT CHAIN TENSIONER SLIPPER

    1. Using a vernier caliper, measure the chain tensioner slipper wear.

      A012JH2
      Maximum Wear
      1.0 mm (0.0394 in.)

      If the wear is more than the maximum, replace the chain tensioner slipper.

  6. INSPECT NO. 1 CHAIN VIBRATION DAMPER

    1. Using a vernier caliper, measure the No. 1 chain vibration damper wear.

      A012G4J
      Maximum Wear
      1.0 mm (0.0394 in.)

      If the wear is more than the maximum, replace the No. 1 chain vibration damper.

  7. INSPECT INTAKE MANIFOLD

    1. Using a precision straightedge and feeler gauge, measure the warpage of the surface where the intake manifold contacts the cylinder head sub-assembly.

      A012I3H
      Maximum Warpage
      0.10 mm (0.00394 in.)

      If the warpage is more than the maximum, replace the intake manifold.

  8. INSPECT EXHAUST MANIFOLD

    1. Using a precision straightedge and feeler gauge, measure the warpage of the surface where the exhaust manifold contacts the cylinder head sub-assembly.

      A012KQ4
      Maximum Warpage
      0.40 mm (0.0157 in.)

      If the warpage is more than the maximum, replace the exhaust manifold.

  9. INSPECT CAMSHAFT

    1. Check the camshaft for runout.

      1. Place the camshaft on V-blocks.

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

        Maximum Runout
        0.03 mm (0.00118 in.)

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

    2. Using a micrometer, measure the cam lobe height.

      Standard Cam Lobe Height
      37.559 to 37.759 mm (1.4787 to 1.4866 in.)
      Minimum Cam Lobe Height
      37.559 mm (1.4787 in.)

      If the cam lobe height is less than the minimum, replace the camshaft.

    3. Using a micrometer, measure the journal diameter.

      Standard Journal Diameter
      26.969 to 26.985 mm (1.0618 to 1.0624 in.)

      If the journal diameter is not as specified, check the camshaft oil clearance.

  10. INSPECT NO. 2 CAMSHAFT

    1. Check the No. 2 camshaft for runout.

      1. Place the No. 2 camshaft on V-blocks.

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

        Maximum Runout
        0.03 mm (0.00118 in.)

        If the runout is more than the maximum, replace the No. 2 camshaft.

    2. Using a micrometer, measure the cam lobe height.

      Standard Cam Lobe Height
      38.270 to 38.470 mm (1.5067 to 1.5146 in.)
      Minimum Cam Lobe Height
      38.270 mm (1.5067 in.)

      If the cam lobe height is less than the minimum, replace the No. 2 camshaft.

    3. Using a micrometer, measure the journal diameter.

      Standard Journal Diameter
      26.969 to 26.985 mm (1.0618 to 1.0624 in.)

      If the journal diameter is not as specified, check the camshaft oil clearance.

  11. INSPECT CAMSHAFT OIL CLEARANCE

    1. Clean the No. 1 camshaft bearing cap, No. 2 camshaft, and No. 3 camshaft bearing caps and camshaft journals.

    2. Place the camshaft and No. 2 camshaft on the cylinder head sub-assembly.

    3. Lay a strip of Plastigage across each of the camshaft journals.

      A012JRBC02
      *a Plastigage

    4. Install the No. 1 camshaft bearing cap, No. 2 camshaft, and No. 3 camshaft bearing cap camshaft bearing caps.

      Click hereНажмите здесь

      Note:

      Do not turn the camshaft.

    5. Remove the No. 1 camshaft bearing cap, No. 2 camshaft, and No. 3 camshaft bearing caps.

      Click hereНажмите здесь

    6. Measure the Plastigage at its widest point.

      A012GKF
      Standard Oil Clearance
      0.025 to 0.062 mm (0.000984 to 0.00244 in.)
      Maximum Oil Clearance
      0.062 mm (0.00244 in.)

      If the camshaft oil clearance is more than the maximum, replace the camshaft. If necessary, replace the cylinder head sub-assembly.

    7. Completely remove the Plastigage.

  12. INSPECT CAMSHAFT THRUST CLEARANCE

    1. Install the No. 2 camshaft and camshaft on the cylinder head sub-assembly.

      Click hereНажмите здесь

    2. Using a dial indicator, measure the thrust clearance while moving the camshaft or No. 2 camshaft back and forth.

      A012MN8
      Standard Thrust Clearance
      0.035 to 0.160 mm (0.00138 to 0.00630 in.)
      Maximum Thrust Clearance
      0.160 mm (0.00630 in.)

      If the camshaft thrust clearance is more than the maximum, replace the cylinder head sub-assembly. If the thrust surface is damaged, replace the camshaft.

    3. Remove the No. 2 camshaft and camshaft from the cylinder head sub-assembly.

      Click hereНажмите здесь

  13. INSPECT CYLINDER HEAD SET BOLT

    1. Using a vernier caliper, measure the diameter of the threaded portion of the bolt at its thinnest point shown in the illustration.

      A012G43C06
      *a Measurement Area
      Standard Diameter
      11.8 to 12.0 mm (0.465 to 0.472 in.)
      Minimum Diameter
      11.2 mm (0.441 in.)
      Tip:

      • If the diameter is less than the minimum, replace the cylinder head set bolt with a new one. Failure to do so may lead to engine damage.

      • If there is any thread deformation replace the cylinder head set bolt with a new one.

  14. INSPECT NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY

    1. Turn the roller by hand to check that it turns smoothly.

      A012KXK

      If the roller does not turn smoothly, replace the No. 1 valve rocker arm sub-assembly.

  15. INSPECT VALVE LASH ADJUSTER ASSEMBLY

    Note:

    • Keep the valve lash adjuster assembly free from dirt and foreign matter.

    • Use only clean engine oil.

    1. Place the valve lash adjuster assembly into a container full of new engine oil.

    2. Insert the tip of SST into the valve lash adjuster plunger and use the tip to press down on the check ball inside the plunger.

      SST
      09276-75010
      A012H9EC01
      *a Correct *b Incorrect
      *c Low Pressure Chamber *d High Pressure Chamber
      *e Tapered Part *f Plunger
      *g Check Ball - -

    3. Squeeze SST and the valve lash adjuster assembly together to move the plunger up and down 5 to 6 times.

    4. Check the movement of the plunger and bleed the air.

      OK
      Plunger moves up and down.
      Note:

      When bleeding air from the high-pressure chamber, make sure that the tip of SST is actually pressing the check ball as shown in the illustration. If the check ball is not pressed, the high-pressure chamber will not be bled.

    5. After bleeding the air, remove SST. Then try to quickly and firmly press the plunger with your fingers.

      OK
      Plunger is difficult to move.

      If the result is not as specified, replace the valve lash adjuster assembly with a new one.