Lexus ES: Components
COMPONENTS
ILLUSTRATION
| *1 | INTAKE VALVE | *2 | INTAKE VALVE GUIDE BUSH |
| *3 | COMPRESSION SPRING | *4 | EXHAUST VALVE |
| *5 | EXHAUST VALVE GUIDE BUSH | *6 | STUD BOLT |
| *7 | SPARK PLUG TUBE | *8 | VALVE STEM OIL SEAL |
| *9 | VALVE SPRING SEAT | *10 | NO. 1 STRAIGHT SCREW PLUG |
| *11 | VALVE SPRING RETAINER | *12 | RING PIN |
| *13 | VALVE SPRING RETAINER LOCK | - | - |
.png) | N*m (kgf*cm, ft.*lbf): Specified torque | ● | Non-reusable part |
.png) | Adhesive 1324 | ★ | Precoated part |
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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 sub-assembly contact
Replacement
REPLACEMENT PROCEDURE 1. REPLACE INTAKE VALVE GUIDE BUSH (a) Heat the cylinder head sub-assembly to between 80 and 100°C (176 and 212°F). (b) Place the cylinder head sub-assembly on wooden blocks. C
Reassembly
REASSEMBLY PROCEDURE 1. INSTALL SPARK PLUG TUBE HINT: When using a new cylinder head sub-assembly, the spark plug tubes must be replaced. (a) Apply adhesive to a new spark plug tube as shown in the
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Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during central gateway ECU (network gateway ECU) removal/installation are shown below. Necessary Procedure Aft
IG2 Signal Circuit Short to Auxiliary Battery (P253012)
DESCRIPTION The hybrid vehicle control ECU compares the IG2 signal to the IG control status signal sent from the certification ECU (smart key ECU assembly) to detect a stuck on malfunction of the IG2 signal. HINT: If DTC P253012 is stored, the power switch will turn off (READY off). DTC No. Det
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