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 |
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(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 |
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(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. |
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4. REMOVE VALVE SPRING SEAT
| (a) Using compressed air and a magnet hand, remove the valve spring seat by blowing air onto it. |
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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. |
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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.
READ NEXT:
Inspection
INSPECTION PROCEDURE 1. INSPECT CYLINDER HEAD SUB-ASSEMBLY (a) Using a precision straightedge and feeler gauge, measure the warpage of the contact surfaces where the cylinder head contacts the cylinde
Replacement
REPLACEMENT PROCEDURE 1. REPLACE INTAKE VALVE GUIDE BUSH (a) Heat the cylinder head sub-assembly to approximately 80 to 100°C (176 to 212°F). (b) Place the cylinder head sub-assembly on wooden block
Reassembly
REASSEMBLY CAUTION / NOTICE / HINT HINT: Perform "Inspection After Repairs" after replacing the cylinder head sub-assembly. Click here PROCEDURE 1. INSTALL CYLINDER HEAD STUD BOLT NOTICE: If a stud
SEE MORE:
Headup Display Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Headup Display Communication Stop Mode Any of the following conditions are met:
Communication stop for "Head Up Display" is indicated on the "Communication Bus Check" screen of the Techstream.
Click here
Communication system DTCs
Coolant
ReplacementREPLACEMENT PROCEDURE 1. DRAIN ENGINE COOLANT CAUTION: Do not remove the reservoir cap while the engine assembly and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns. (a) Detach the 4 clips and remove the rear engine un
