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Home >> Toyota >> 2019 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical (1AR-FE) (Service Information) (Except Hybrid) (2 Of 2)) >> Cylinder Block >> Disassembly [12/2013 - ] >> Procedure

Disassembly [12/2013 - ]: Procedure

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  1. INSPECT CONNECTING ROD THRUST CLEARANCE 
    1. Using a dial indicator, measure the thrust clearance while moving the connecting rod sub-assembly back and forth.
      GTY314959Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Thrust Clearance

      0.160 to 0.512 mm (0.00630 to 0.0202 in.)

      Maximum Thrust Clearance

      0.512 mm (0.0202 in.)

      If the thrust clearance is more than the maximum, replace the connecting rod sub-assembly. If necessary, replace the crankshaft.

  2. INSPECT CONNECTING ROD OIL CLEARANCE 
    1. Check the alignment marks on the connecting rod sub-assembly and connecting rod cap to ensure correct reassembly.
      GTY432747Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Alignment Mark
    2. Remove the 2 connecting rod bolts and connecting rod cap.
      GTY451859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Keep the connecting rod bearing and connecting rod cap together.

    3. Clean the crank pin and connecting rod bearing.
    4. Check the crank pin and connecting rod bearing for pitting and scratches.

      If the crank pin or connecting rod bearing is damaged, replace the connecting rod bearings. If necessary, replace the crankshaft.

    5. Lay a strip of Plastigage on the crank pin.
      GTY429282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Plastigage
    6. Check that the front mark of the connecting rod cap is facing in the correct direction, and install the connecting rod cap.
      GTY432607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front Mark
    7. Apply a light coat of engine oil to the threads and under the heads of the 2 connecting rod bolts.
      GTY451859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Install and alternately tighten the 2 connecting rod bolts in several steps.

      Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) 

    9. Mark the front of each connecting rod bolt with paint.
      GTY438151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Paint Mark
      Engine Front
    10. Tighten the connecting rod bolts by 90° as shown in the illustration.
      NOTE:

      Do not turn the crankshaft during the measurement.

    11. Remove the 2 connecting rod bolts and connecting rod cap.

      HINT: 

      Keep the connecting rod bearing and connecting rod cap together.

    12. Measure the Plastigage at its widest point.
      GTY437093Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Plastigage
      *b Number Mark

      Standard Oil Clearance

      0.030 to 0.063 mm (0.00118 to 0.00248 in.)

      Maximum Oil Clearance

      0.07 mm (0.00276 in.)

      NOTE:

      Remove the Plastigage completely after the measurement.

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

      HINT: 

      If replacing a connecting rod bearing, select a new one with the same number as marked on the connecting rod cap. There are 3 sizes of standard connecting rod bearings, marked "1", "2" or "3" accordingly.

      Standard Crank Pin Diameter

      51.492 to 51.500 mm (2.0272 to 2.0276 in.)

      Standard Connecting Rod Big End Inside Diameter

      Mark Specified Condition
      1 54.500 to 54.508 mm (2.1457 to 2.1460 in.)
      2 54.509 to 54.516 mm (2.1460 to 2.1463 in.)
      3 54.517 to 54.524 mm (2.1463 to 2.1466 in.)

      Standard Connecting Rod Bearing Center Wall Thickness

      Mark Specified Condition
      1 1.483 to 1.487 mm (0.0584 to 0.0585 in.)
      2 1.488 to 1.491 mm (0.0586 to 0.0587 in.)
      3 1.492 to 1.495 mm (0.0587 to 0.0589 in.)
    13. Perform the inspection for each cylinder.
  3. REMOVE PISTON WITH CONNECTING ROD 
    1. Using a ridge reamer, remove all the carbon from the top of the cylinder.
      GTY453746Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Ridge Reamer
    2. Remove the 8 connecting rod bolts, 4 connecting rod caps and 4 connecting rod bearings.
    3. Push the piston with connecting rod and connecting rod bearing through the top of the cylinder block sub-assembly.

      HINT: 

      • Keep the connecting rod bearings, connecting rod sub-assembly and connecting rod cap together.
      • Arrange the removed parts in the correct order.
      • Be sure to arrange the removed piston and connecting rod sub-assemblies in such a way that they can be reinstalled exactly as before.
  4. REMOVE CONNECTING ROD BEARING 
    1. Remove the connecting rod bearings from the connecting rod sub-assemblies and connecting rod caps.

      HINT: 

      Arrange the removed parts in the correct order.

  5. INSPECT CRANKSHAFT THRUST CLEARANCE 
    1. Using a dial indicator, measure the thrust clearance while prying the crankshaft back and forth with a screwdriver.
      GTY314956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Thrust Clearance

      0.04 to 0.24 mm (0.00157 to 0.00945 in.)

      Maximum Thrust Clearance

      0.30 mm (0.0118 in.)

      If the thrust clearance is more than the maximum, replace the crankshaft thrust washers as a set. If necessary, replace the crankshaft.

      Standard Thrust Washer Thickness

      1.93 to 1.98 mm (0.0760 to 0.0780 in.)

  6. REMOVE CRANKSHAFT 
    1. Uniformly loosen and remove the 10 crankshaft bearing cap bolts in several steps in the order shown in the illustration.
      Fig 1: Crankshaft Bearing Caps Bolt Loosening Sequence
      GTY444994Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 5 crankshaft bearing caps from the cylinder block sub-assembly.

      HINT: 

      • Keep the No. 2 crankshaft bearings and crankshaft bearing caps together.
      • Arrange the removed parts in the correct order.
    3. Remove the crankshaft from the cylinder block sub-assembly.

      HINT: 

      Keep the crankshaft bearings and crankshaft thrust washers together with the cylinder block sub-assembly.

    4. Check each crankshaft journal and crankshaft bearing for pitting and scratches.

      If the journal or crankshaft bearing is damaged, replace the crankshaft bearings. If necessary, replace the crankshaft.

  7. REMOVE CRANKSHAFT THRUST WASHER 
    1. Remove the crankshaft thrust washers from the cylinder block sub-assembly.
      GTY170291Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE CRANKSHAFT BEARING 
    1. Remove the crankshaft bearings and No. 2 crankshaft bearings from the cylinder block sub-assembly and crankshaft bearing caps.

      HINT: 

      Arrange the removed parts in the correct order.

  9. REMOVE CRANKSHAFT PULLEY KEY 
    1. Using a screwdriver, remove the 2 crankshaft pulley keys from the crankshaft.
  10. REMOVE PISTON RING SET 
    1. Using a piston ring expander, remove the No. 1 compression ring and No. 2 compression ring.
      GTY448341Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Piston Ring Expander
    2. Remove the oil ring and oil ring expander by hand.

      HINT: 

      Arrange the removed parts in the correct order.

  11. REMOVE PISTON PIN HOLE SNAP RING 
    1. Using a screwdriver, pry out the piston pin hole snap ring (front side).
      GTY455206Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protective Tape
      *b Cutout
      NOTE:

      Do not remove the snap ring (rear side) unless necessary.

      HINT: 

      Tape the screwdriver tip before use.

  12. REMOVE PISTON 
    1. Gradually heat each piston to 80 to 90°C (176 to 194°F).
      GTY174253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a hammer and brass bar, lightly tap out the piston pin. Then remove the connecting rod sub-assembly.
      GTY174255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      • The piston and piston pin are a matched set.
      • Be sure to arrange the removed pistons, piston pins, piston rings, connecting rod sub-assemblies and connecting rod bearings in such a way that they can be reinstalled exactly as before.
      • Arrange the removed parts in the correct order.
  13. REMOVE NO. 1 OIL NOZZLE SUB-ASSEMBLY 
    1. Using a 5 mm hexagon wrench, remove the 2 bolts and 2 No. 1 oil nozzle sub-assemblies.
      GTY312568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. REMOVE NO. 2 OIL NOZZLE SUB-ASSEMBLY 
    1. Using a 5 mm hexagon wrench, remove the 4 bolts and 4 No. 2 oil nozzle sub-assemblies.
      GTY314616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. REMOVE STUD BOLT 
    NOTE:

    If a stud bolt is deformed or its threads are damaged, replace it.

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