Lexus NX: Disassembly

DISASSEMBLY

PROCEDURE

1. REMOVE INTAKE VALVE

(a) Using SST and wooden blocks, compress the inner compression spring and remove the valve spring retainer locks. SST: 09202-70020 SST: 09202-00021

(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 and wooden blocks, compress the inner compression spring and remove the valve spring retainer locks. SST: 09202-70020 SST: 09202-00021

(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 seat by blowing air onto it.

5. REMOVE NO. 1 STRAIGHT SCREW PLUG

NOTICE:

If coolant leaks from a No. 1 straight screw plug or a plug is corroded, replace it.

(a) Using a 10 mm hexagon wrench, remove the 3 No. 1 straight screw plugs and 3 gaskets.

6. REMOVE NO. 2 STRAIGHT SCREW PLUG

NOTICE:

If coolant leaks from a No. 2 straight screw plug or the plug is corroded, replace it.

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

7. REMOVE CYLINDER HEAD STUD BOLT

NOTICE:

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

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