Cylinder Head Repair

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
2Tr-Fe Engine Mechanical. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. REPAIR INTAKE VALVE SEAT

  2. REPAIR EXHAUST VALVE SEAT

Cylinder Head -- Repair



1. REPAIR INTAKE VALVE SEAT
NOTICE:
  1. Repair the seat while checking the seating position.
  2. Keep the lip free of foreign matter.
  3. Take off the cutter gradually to make the intake valve seat smooth.


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Mechanical.Engine.Cylinder Head Repair

  1. If the seating is too high on the valve face, use 30° and 45° cutters to correct the seat.

    Text in Illustration
    *1
    		Width


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Mechanical.Engine.Cylinder Head Repair

  1. If the seating is too low on the valve face, use 60° and 45° cutters to correct the seat.

    Text in Illustration
    *1
    		Width

  1. Hand-lap the valve and valve seat with an abrasive compound.

  1. Check the valve seating position.

    Standard width:
    1.0 to 1.4 mm (0.0394 to 0.0551 in.)


2. REPAIR EXHAUST VALVE SEAT
NOTICE:
  1. Repair the seat while checking the seating position.
  2. Keep the lip free of foreign matter.
  3. Take off the cutter gradually to make the exhaust valve seat smooth.


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Mechanical.Engine.Cylinder Head Repair

  1. If the seating is too high on the valve face, use 30° and 45° cutters to correct the seat.

    Text in Illustration
    *1
    		Width


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Mechanical.Engine.Cylinder Head Repair

  1. If the seating is too low on the valve face, use 60° and 45° cutters to correct the seat.

    Text in Illustration
    *1
    		Width

  1. Hand-lap the valve and valve seat with an abrasive compound.

  1. Check the valve seating position.

    Standard width:
    1.0 to 1.4 mm (0.0394 to 0.0551 in.)