Cylinder Head Reassembly


  1. INSTALL STUD BOLT

  2. INSTALL NO. 2 STRAIGHT SCREW PLUG

  3. INSTALL NO. 1 STRAIGHT SCREW PLUG

  4. INSTALL VALVE SPRING SEAT

  5. INSTALL VALVE STEM OIL SEAL

  6. INSTALL INTAKE VALVE

  7. INSTALL EXHAUST VALVE

Cylinder Head -- Reassembly


HINT:
for Automatic Transmission:
Perform "Inspection After Repairs" after replacing the cylinder head sub-assembly or cylinder head LH (LandCruiser RM000004NJC03SX.html).


1. INSTALL STUD BOLT
NOTICE:
If a stud bolt is deformed or its threads are damaged, replace it.


  1. Using E6 and E8 "TORX" sockets, install the stud bolts.

    Torque:
    for bolt A:
    10 N*m{102 kgf*cm, 7 ft.*lbf}
    for bolt B:
    4.0 N*m{41 kgf*cm, 35 in.*lbf}


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Mechanical.Engine.Cylinder Head  Reassembly


    Text in Illustration
    *A
    Intake Side of RH
    *B
    Intake Side of LH
    *C
    Exhaust Side of RH
    *D
    Exhaust Side of LH
    *E
    Rear Side of RH
    *F
    Rear Side of LH


2. INSTALL NO. 2 STRAIGHT SCREW PLUG
  1. Using a 14 mm hexagon wrench, install 2 new gaskets and the 2 No. 2 straight screw plugs.

    Torque:
    80 N*m{816 kgf*cm, 59 ft.*lbf}


3. INSTALL NO. 1 STRAIGHT SCREW PLUG
  1. Using a 10 mm hexagon wrench, install 4 new gaskets and the 4 No. 1 straight screw plugs.

    Torque:
    44 N*m{449 kgf*cm, 32 ft.*lbf}


4. INSTALL VALVE SPRING SEAT
  1. Install the valve spring seats to the cylinder head.



5. INSTALL VALVE STEM OIL SEAL


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Mechanical.Engine.Cylinder Head  Reassembly
  1. Apply a light coat of engine oil to new valve stem oil seals.

    Text in Illustration
    *A
    Intake Side
    *B
    Exhaust Side
    *1
    Gray
    *2
    Black
    HINT:
    The intake valve oil seals are gray and the exhaust valve oil seals are black.
    NOTICE:
    Pay attention when installing the intake and exhaust valve stem oil seals. For example, installing the intake valve stem oil seal to the exhaust side or installing the exhaust valve stem oil seal to the intake side can cause installation problems later.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Mechanical.Engine.Cylinder Head  Reassembly
  1. Using SST, push in the oil seals.

    SST
    09201-41020
    Text in Illustration
    *a
    CORRECT
    *b
    INCORRECT
    NOTICE:
    Failure to use SST will cause the seal to be damaged or improperly seated.


6. INSTALL INTAKE VALVE


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Mechanical.Engine.Cylinder Head  Reassembly
  1. Apply a sufficient coat of engine oil to the tip area of the intake valve shown in the illustration.

  1. Install the intake valve, inner compression spring and valve spring retainer to the cylinder head.

    NOTICE:
    Install the same parts in the same combination to their original locations.
  1. Using SST, compress the inner compression spring and install the 2 valve spring retainer locks.

    SST
    09202-70020(09202-00010)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155
  1. Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

    NOTICE:
    Be careful not to damage the retainer.


7. INSTALL EXHAUST VALVE


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Mechanical.Engine.Cylinder Head  Reassembly
  1. Apply a sufficient coat of engine oil to the tip area of the exhaust valve shown in the illustration.

  1. Install the exhaust valve, inner compression spring and valve spring retainer to the cylinder head.

    NOTICE:
    Install the same parts in the same combination to the original locations.
  1. Using SST, compress the inner compression spring and install the 2 valve spring retainer locks.

    SST
    09202-70020(09202-00010)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155
  1. Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

    NOTICE:
    Be careful not to damage the retainer.