Lexus ES: Removal

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / A25a-fxs (engine Mechanical) / Camshaft / 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 camshaft removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed
Auxiliary battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane control system (for HV Model)
		Pre-collision system (for HV Model)
		Parking support brake system (for HV Model)*
		Lighting system (for HV Model)
	Memorize steering angle neutral point	Parking assist monitor system (for HV Model)
	Memorize steering angle neutral point	Panoramic view monitor system (for HV Model)
	Initialize power trunk lid system	Power trunk lid system (for HV Model)
Replacement of ECM	Perform Vehicle Identification Number (VIN) registration	MIL illuminates
Gas leak from exhaust system is repaired Replacement of throttle body with motor assembly Cleaning the deposits from the throttle body assembly Replacement of cam timing control motor with EDU assembly Removal and installation of a cam timing control motor with EDU assembly Replacement of camshaft timing gear assembly Removal and installation of a camshaft timing gear assembly Replacement of camshaft (for intake or exhaust camshaft) Replacement of camshaft timing exhaust gear assembly Replacement of fuel pump assembly (for high pressure side) Replacement of ignition coil assembly	Inspection After Repair	Poor idle, etc. Engine start function, etc.

*: When performing learning using the Techstream.
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NOTICE:

After the power switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System)
After the power switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Navigation System)
This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.
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PROCEDURE

1. REMOVE FUEL PUMP ASSEMBLY (for High Pressure)

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2. DISCONNECT AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY

(a) Disengage the 2 clamps and disconnect the air conditioning tube and accessory assembly.

3. DISCONNECT ENGINE WIRE

(a) Disconnect the 6 connectors.

(b) Disengage the 3 clamps and disconnect the engine wire.

4. REMOVE IGNITION COIL ASSEMBLY

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5. REMOVE CAMSHAFT POSITION SENSOR (for Intake Side)

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6. REMOVE CAMSHAFT POSITION SENSOR (for Exhaust Side)

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7. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY

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8. REMOVE O-RING

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9. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (EXHAUST CAMSHAFT TIMING GEAR BOLT ASSEMBLY)

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10. REMOVE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY

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11. REMOVE CAM TIMING CONTROL MOTOR O-RING

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12. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

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13. REMOVE SPARK PLUG TUBE GASKET

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14. REMOVE FUEL PUMP LIFTER GUIDE

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15. SET NO. 1 CYLINDER TO TDC (COMPRESSION)

(a) Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley assembly with the "0" timing mark on the No. 2 timing chain cover assembly.

*a	Paint Mark
*b	Timing Mark
*c	"0" Timing Mark

(b) Check that the timing marks are positioned as shown in the illustration.

HINT:

If the timing marks are not positioned as shown in the illustration, turn the crankshaft clockwise and then align them again.

(c) Place paint marks on the chain sub-assembly at points aligned with the timing marks on the camshaft timing gear assembly and camshaft timing exhaust gear assembly.

16. REMOVE STRAIGHT SCREW PLUG

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17. REMOVE CAMSHAFT

(a) Rotate the crankshaft approximately 15° clockwise.

*a	Approximately 15°

(b) Rotate the crankshaft approximately 15° counterclockwise.

*a	Approximately 15°

(c) Align the pin hole of the No. 1 chain tensioner assembly with the pin hole of the chain tensioner slipper, and then insert the pin.

*a	Pin
*b	Pin Hole (No. 1 Chain Tensioner Assembly Side)
*c	Pin Hole (Chain Tensioner Slipper Side)

(d) Type A:

(1) Using the hexagonal portion of the No. 2 camshaft, secure the No. 2 camshaft.

NOTICE:

Do not damage the camshaft housing sub-assembly, cylinder head sub-assembly and spark plug tube.

Hold

(2) Using a 5 mm hexagon wrench, remove the 2 bolts from the camshaft timing exhaust gear assembly.

(e) Type B:

(1) Using the hexagonal portion of the No. 2 camshaft, secure the No. 2 camshaft.

NOTICE:

Do not damage the camshaft housing sub-assembly, cylinder head sub-assembly and spark plug tube.

Hold

(2) Using a 5 mm hexagon wrench, remove the 2 bolts from the camshaft timing exhaust gear assembly.

(f) Using the hexagonal portion of the camshaft, secure the camshaft.

*a	Hold
	Turn

NOTICE:

Do not damage the camshaft housing sub-assembly, cylinder head sub-assembly and spark plug tube.
Do not disassemble the camshaft timing gear assembly.

(g) Using a 10 mm bi-hexagon socket wrench, remove the bolt from the camshaft timing gear assembly.

(h) Using the hexagonal portion of the No. 2 camshaft, loosen and hold the chain sub-assembly while moving the No. 2 camshaft in the direction shown in the illustration.

*a	Hold	-	-
	Turn	-	-

(i) Move the camshaft timing gear assembly together with the camshaft timing exhaust gear assembly and chain sub-assembly toward the No. 2 timing chain cover assembly as shown in the illustration.

*1	Camshaft Timing Gear Assembly	*2	Camshaft Timing Exhaust Gear Assembly
*3	Chain Sub-assembly	-	-
	Remove in this Direction	-	-

(j) Remove the camshaft timing exhaust gear assembly from the chain sub-assembly.

(k) Remove the camshaft timing gear assembly from the chain sub-assembly.

(l) Secure the chain sub-assembly to the vehicle using rope, etc.

NOTICE:

Do not drop the chain sub-assembly into the timing chain cover assembly.

(m) Uniformly loosen and remove the 8 bolts in the order shown in the illustration.

(n) Uniformly loosen and remove the 14 bolts in the order shown in the illustration.

NOTICE:

Uniformly loosen the bolts while holding the camshaft horizontally.

*1	No. 1 Camshaft Bearing Cap
*2	No. 2 Camshaft Bearing Cap
*3	No. 3 Camshaft Bearing Cap
*4	No. 4 Camshaft Bearing Cap

(o) Remove the No. 1 camshaft bearing cap, No. 2 camshaft bearing cap, 2 No. 3 camshaft bearing caps and No. 4 camshaft bearing cap.

HINT:

Arrange the removed parts so that they can be reinstalled in their original locations.

(p) Remove the camshaft from the camshaft housing sub-assembly.

(q) Remove the No. 2 camshaft from the camshaft housing sub-assembly.

SEE MORE:

Installation

INSTALLATION CAUTION / NOTICE / HINT NOTICE: This procedure includes the installation of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts. Click here PROCEDURE 1. INSTALL VACUUM PUMP ASSEMBLY (a) When reusing the vacuum pump assembly: (1) Install

Vehicle Speed Sensor (B2415)

DESCRIPTION The headlight ECU sub-assembly LH receives speed signals from the skid control ECU (brake booster with master cylinder assembly) via CAN communication and performs light control. for LED Type Turn Signal Light DTC No. Detection Item DTC Detection Condition Trouble Area DTC Out

Lexus ES: Removal

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Installation

Cylinder Block

Precaution

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Installation

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