Disassembly

1GR-FE ENGINE MECHANICAL: CYLINDER HEAD: DISASSEMBLY

1. REMOVE INTAKE VALVE

(a) Using SST, compress the inner compression spring and remove the valve spring retainer locks.





SST : 09202-70020

09202-00010

(b) Remove the valve spring retainer, inner compression spring and intake valve.

HINT
Arrange the removed parts in the correct order.

2. REMOVE EXHAUST VALVE

(a) Using SST, compress the inner compression spring and remove the valve spring retainer locks.





SST : 09202-70020

09202-00010

(b) Remove the valve spring retainer, inner compression spring and exhaust valve.

HINT
Arrange the removed parts in the correct order.

3. REMOVE VALVE STEM OIL SEAL

(a) Using needle-nose pliers, remove the valve stem oil seals.





4. REMOVE VALVE SPRING SEAT

(a) Using compressed air and a magnet hand, remove the valve spring seats by blowing air onto them.





5. REMOVE NO. 1 STRAIGHT SCREW PLUG





NOTICE:
If coolant leaks from a straight screw plug or a plug is corroded, replace it.

(a) Using a 10 mm hexagon wrench, remove the 4 No. 1 straight screw plugs and 4 gaskets.

Text in Illustration





6. REMOVE NO. 2 STRAIGHT SCREW PLUG





NOTICE:
If coolant leaks from a straight screw plug or a plug is corroded, replace it.

(a) Using a 14 mm hexagon wrench, remove the 2 No. 2 straight screw plugs and 2 gaskets.

Text in Illustration





7. REMOVE STUD BOLT

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

8. REMOVE UNION

NOTICE:
It is not necessary to remove a union unless it is being replaced.