RM3660EC _51 Engine / Hybrid System _080726 8ZR-FXE ENGINE MECHANICAL _0391621 CYLINDER HEAD A

8ZR-FXE ENGINE MECHANICAL CYLINDER HEAD DISASSEMBLY

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during engine unit removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
*: The vehicle height changes because of tire replacement.
Replacement of ECM	Vehicle Identification Number (VIN) or frame number registration	DTC stored	(202304,999999,_51,_080778,_0393982,RM100000002BDLH,)
	ECU configuration	-	(202304,999999,_V1,_143216,_0598316,RM100000002B3MK,)
	Update ECU security key	Vehicle Control History (RoB) are stored	(202304,999999,_V1,_143216,_0598316,RM100000002B3ML,)
	Perform Total Short Trip Estimate Registration	-	(202304,999999,_51,_080778,_0393982,RM100000002BDLH,)
Replacement of inverter with converter assembly	ECU configuration	-	(202304,999999,_V1,_143216,_0598316,RM100000002B3MK,)
Replacement of inverter with converter assembly	Resolver learning	· DTCs are stored · Slight vibration at a vehicle speed of 5 km/h (3 mph) or less · Shock or vibration during acceleration	(202304,999999,_51,_080773,_0600292,RM100000002BBW3,)
· Replacement of throttle body assembly · Replacement of cylinder head sub-assembly · Replacement of camshaft (for intake or exhaust camshaft) · Replacement of camshaft timing gear assembly · Replacement of fuel injector assembly · Replacement of spark plug · Replacement of ignition coil assembly · Replacement of EGR valve assembly · Gas leak from exhaust system is repaired · Replacement of knock control sensor	Inspection after repair	· Poor idle, etc. · Engine start function, etc.	(202304,999999,_51,_080778,_0393982,RM100000002BDLI,)
Replacement of hybrid vehicle transaxle assembly	· Resolver learning · Initialize resolver	· DTCs are stored · Slight vibration at a vehicle speed of 5 km/h (3 mph) or less	(202304,999999,_51,_080773,_0600292,RM100000002BBW3,)
· Tires · Suspension parts	Rear television camera assembly optical axis (Back camera position setting)*	Parking Assist Monitor System	(202304,999999,_56,_080754,_0596561,RM100000002AX0C,)
· Tires · Suspension parts	Parking assist ECU initialization	Panoramic View Monitor System	(202307,999999,_56,_080754,_0612151,RM100000002CL9H,)
Front wheel alignment adjustment	1. Perform "Reset Memory" 2. Perform "Calibration"	· DTCs are stored · ABS warning light illuminates · Brake system warning light (yellow indicator) illuminates · Slip indicator light illuminates · Electronically controlled brake system disabled or malfunctions	(202304,999999,_54,_080770,_0392591,RM100000002B671,)

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven
Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.	(202304,999999,_95,_139716,_0584193,RM1000000029F4C,)

PROCEDURE

Hide Display 13711 1.REMOVE INTAKE VALVE

2.604,1.844 2.896,1.844 false 1.542,0.656 1.833,0.656 false 2.969,1.771 3.281,1.927 0.313,0.156 10 false *a 1.26,0.594 1.719,0.792 0.458,0.198 10 false SST

*a	Wooden Block

Using SST and wooden blocks, compress the inner compression spring and remove the 8 valve spring retainer locks.

SST: 09202-70020 (09202-01010, 09202-01020)
09202-00021

HINT:: Arrange the removed parts in such a way that they can be reinstalled to their original locations.

Remove the 8 valve spring retainers, 8 inner compression springs and 8 intake valves from the cylinder head sub-assembly.

HINT:: Arrange the removed parts in such a way that they can be reinstalled to their original locations.

Hide Display 13715 2.REMOVE EXHAUST VALVE

1.865,2.052 2.771,1.917 2.771,1.917 2.458,1.615 false 0.573,0.281 0.688,0.375 false 2.833,1.854 3.146,2.01 0.313,0.156 10 false *a 0.323,0.177 0.781,0.375 0.458,0.198 10 false SST

*a	Wooden Block

Using SST and wooden blocks, compress the inner compression spring and remove the 8 valve spring retainer locks.

SST: 09202-70020 (09202-01010, 09202-01020)
09202-00021

HINT:: Arrange the removed parts in such a way that they can be reinstalled to their original locations.

Remove the 8 valve spring retainers, 8 inner compression springs and 8 exhaust valves from the cylinder head sub-assembly.

HINT:: Arrange the removed parts in such a way that they can be reinstalled to their original locations.

Hide Display 3.REMOVE VALVE STEM OIL SEAL

Remove the 16 valve stem oil seals.

Hide Display 13734 4.REMOVE VALVE SPRING SEAT

Using compressed air and a Magnet Hand, remove the 16 valve spring seats from the cylinder head sub-assembly by blowing air onto them.

Hide Display 5.REMOVE NO. 2 STRAIGHT SCREW PLUG

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

Using a 10 mm straight hexagon wrench, remove the 3 No. 2 straight screw plugs and 3 gaskets from the cylinder head sub-assembly.