Cylinder Head Gasket Removal


  1. REMOVE EXHAUST MANIFOLD

  2. REMOVE TIMING BELT

  3. REMOVE DIESEL THROTTLE BODY

  4. DISCONNECT COOLER COMPRESSOR ASSEMBLY

  5. REMOVE NO. 1 COMPRESSOR MOUNTING BRACKET

  6. DISCONNECT HEATER WATER HOSE SUB-ASSEMBLY

  7. REMOVE INJECTION PIPE SET

  8. DISCONNECT WIRE HARNESS

  9. REMOVE WIRING HARNESS CLAMP BRACKET (for LHD)

  10. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

  11. REMOVE CAMSHAFT

  12. REMOVE CYLINDER HEAD SUB-ASSEMBLY

  13. INSPECT CYLINDER HEAD SET BOLT

  14. REMOVE CYLINDER HEAD GASKET

Cylinder Head Gasket -- Removal



1. REMOVE EXHAUST MANIFOLD

  1. Remove the exhaust manifold (LandCruiser RM000004564005X.html).



2. REMOVE TIMING BELT

  1. Remove the timing belt (LandCruiser RM00000126J00HX.html).



3. REMOVE DIESEL THROTTLE BODY

  1. Remove the diesel throttle body (LandCruiser RM0000012V000DX.html).



4. DISCONNECT COOLER COMPRESSOR ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the 4 bolts and idle pulley bracket.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Disconnect the connector.

  1. Remove the 3 bolts and disconnect the cooler compressor.

    HINT:
    It is not necessary to completely remove the cooler compressor. With the hoses connected to the compressor, hang the compressor on the vehicle body with a rope.


5. REMOVE NO. 1 COMPRESSOR MOUNTING BRACKET


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the bolt and disconnect the generator.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Mechanical.Engine.Cylinder Head Gasket Removal

  1. Remove the 4 bolts and No. 1 compressor mounting bracket.



6. DISCONNECT HEATER WATER HOSE SUB-ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Mechanical.Engine.Cylinder Head Gasket Removal

  1. Remove the bolt and disconnect the heater water hoses.

    Text in Illustration
    *A
    		for Rear Heater


7. REMOVE INJECTION PIPE SET


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Mechanical.Engine.Cylinder Head Gasket Removal

  1. Using a union nut wrench, loosen the 8 union nuts of the 4 injection pipes.

    Text in Illustration
    *1
    		Union Nut Wrench
    *a
    		for Injection Nozzle Side
    *b
    		for Injection Pump Side

  1. Remove the 2 nuts, 2 upper pipe clamps and 4 injection pipes with 2 lower pipe clamps.



8. DISCONNECT WIRE HARNESS

  1. Remove the terminal cap.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the nut and generator wire.

  1. Disconnect the generator connector and cooler compressor connector.

  1. Detach the 4 wire harness clamps.



  1. for RHD:



      Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

    1. Detach the 5 wire harness clamps.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. for LHD:

    1. Detach the 4 wire harness clamps.



      2. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

    2. Detach the 3 wire harness clamps.



9. REMOVE WIRING HARNESS CLAMP BRACKET (for LHD)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the bolt and wiring harness clamp bracket.



10. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

  1. Remove the 9 bolts, nut, cylinder head cover and gasket.



11. REMOVE CAMSHAFT


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Mechanical.Engine.Cylinder Head Gasket Removal

  1. Turn the camshaft with a wrench so that the key groove faces upward.

    Text in Illustration
    *1
    		Upward
    *2
    		Key Groove


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Mechanical.Engine.Cylinder Head Gasket Removal

  1. Uniformly loosen and remove the 10 bearing cap bolts in several steps in the sequence shown in the illustration.

  1. Remove the 5 bearing caps and camshaft.

    HINT:
    Arrange the bearing caps in the correct order.


12. REMOVE CYLINDER HEAD SUB-ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Mechanical.Engine.Cylinder Head Gasket Removal

  1. Uniformly loosen and remove the 18 cylinder head bolts in several steps in the sequence shown.

    NOTICE:
    Head warpage or cracking could result from removing bolts in an incorrect order.

  1. Lift the cylinder head from the dowels on the cylinder block to remove it, and place the cylinder head on wooden blocks on a workbench.

    NOTICE:
    Do not damage the contact surfaces of the cylinder head and cylinder block.
    HINT:
    If the cylinder head is difficult to lift off, pry between the cylinder head and block with a screwdriver.


13. INSPECT CYLINDER HEAD SET BOLT


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Mechanical.Engine.Cylinder Head Gasket Removal

  1. Using a vernier caliper, measure the minimum outer diameter of the elongated thread at the measuring point.

    Standard outer diameter:
    11.80 to 12.00 mm (0.465 to 0.472 in.)
    Minimum outer diameter:
    11.60 mm (0.457 in.)
    Text in Illustration
    *a
    		Measuring Point
    *b
    		Elongated Thread
    If the diameter is less than the minimum, replace the cylinder head set bolt.


14. REMOVE CYLINDER HEAD GASKET