Toyota Avalon (XX50): Oil Pump

*1

TIMING CHAIN CASE OIL SEAL

*2

TIMING CHAIN COVER ASSEMBLY

*3

OIL PUMP GASKET

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-

N*m (kgf*cm, ft.*lbf): Specified torque

●

Non-reusable part

MP Grease

Do not apply lubricants to the threaded parts

*1

OIL PUMP COVER

*2

OIL PUMP RELIEF VALVE

*3

OIL PUMP ROTOR SET

*4

TIMING CHAIN COVER ASSEMBLY

*5

OIL PUMP RELIEF VALVE SPRING

*6

OIL PUMP RELIEF VALVE PLUG

*7

DRIVEN ROTOR

*8

DRIVE ROTOR

N*m (kgf*cm, ft.*lbf): Specified torque

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(a) Using a 27 mm socket wrench, remove the oil pump relief valve plug from the oil pump cover.

(a) Remove the 8 bolts and oil pump cover from the timing chain cover assembly.

(a) Remove the drive rotor and driven rotor from the timing chain cover assembly.

(a) Coat the oil pump relief valve with engine oil and check that it falls smoothly into the valve hole by its own weight.

HINT:

If the oil pump relief valve does not fall smoothly, replace the timing chain cover assembly.

(b) Install the drive rotor and driven rotor to the timing chain cover assembly with the rotor marks facing up. Check that the rotors rotate smoothly.

HINT:

If the rotors do not rotate smoothly, replace the timing chain cover assembly.

(c) Check the tip clearance.

(1) Using a feeler gauge, measure the clearance between the drive rotor and driven rotor tips as shown in the illustration.

Standard Tip Clearance:

0.040 to 0.150 mm (0.00157 to 0.00591 in.)

Maximum Tip Clearance:

0.150 mm (0.00591 in.)

HINT:

If the tip clearance is more than the maximum, replace the timing chain cover assembly.

(d) Check the side clearance.

(1) Using a feeler gauge and precision straightedge, measure the clearance between the drive rotor and driven rotor and precision straightedge as shown in the illustration.

Standard Side Clearance:

0.030 to 0.070 mm (0.00118 to 0.00276 in.)

Maximum Side Clearance:

0.070 mm (0.00276 in.)

HINT:

If the side clearance is more than the maximum, replace the timing chain cover assembly.

(e) Check the body clearance.

(1) Using a feeler gauge, measure the clearance between the timing chain cover assembly and driven rotor as shown in the illustration.

Standard Body Clearance:

0.250 to 0.325 mm (0.00984 to 0.0128 in.)

Maximum Body Clearance:

0.325 mm (0.0128 in.)

HINT:

If the body clearance is more than the maximum, replace the timing chain cover assembly.

*a

Engine Assembly Side

*b

Timing Chain Cover Assembly Side

Clean

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-

*a

Dashed Line Area

(Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent)

*b

Continuous Line Area

(Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent)

*c

Alternate Long and Short Dashed Line Area

(Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent)

*d

Dashed Line Area

(Seal packing: Toyota Genuine Seal Packing 1282B, Three Bond 1282B or equivalent)

6.0 mm (0.236 in.) or more

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-

Dashed Line Area

(Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent)

3.5 mm (0.138 in.) or more

3.0 to 4.0 mm (0.118 to 0.157 in.)

Continuous Line Area

(Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent)

6.0 mm (0.236 in.) or more

5.0 mm (0.197 in.)

Alternate Long and Short Dashed Line Area

(Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent)

4.5 mm (0.177 in.) or more

3.0 to 4.0 mm (0.118 to 0.157 in.)

Dashed line area

(Seal packing: Toyota Genuine Seal Packing 1282B, Three Bond 1282B or equivalent)

3.5 mm (0.138 in.) or more

2.0 to 3.0 mm (0.0787 to 0.118 in.)

(d) Align the drive rotor spline and the crankshaft as shown in the illustration. Install the timing chain cover assembly.

*a

Torque

*b

Bolt and Nut Tightening Order

*c

Nut

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-

(A)

28 mm (1.10 in.)

(B)

55 mm (2.17 in.)

(C)

60 mm (2.36 in.)

(D)

40 mm (1.57 in.)

(a) Coat the drive rotor and driven rotor with engine oil and place them into the timing chain cover assembly with the rotor marks facing up. Check that the rotors rotate smoothly.

(a) Install the oil pump cover to the timing chain cover assembly with the 8 bolts.

Torque:

9.1 N·m {93 kgf·cm, 81 in·lbf}

Bolt Length:

(c) Using a 27 mm socket wrench, install the oil pump relief valve plug to the oil pump cover.

Torque:

49 N·m {500 kgf·cm, 36 ft·lbf}

Battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane departure alert system (w/ Steering Control)

Pre-collision system

Intelligent Clearance Sonar System*1

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

ECU communication ID registration (Immobiliser system)

Engine start function

• Replacement of throttle body with motor assembly
• Cleaning the deposits from the throttle body with motor assembly
• Replacement of fuel injector assembly (for port injection)
• Replacement of fuel injector assembly (for direct injection)
• Replacement of fuel pump assembly (for high pressure side)
• Replacement of ignition coil assembly
• Air leaks from intake system
• Gas leak from exhaust system is repaired
• Replacement of knock control sensor

Inspection after repair

• Poor idle, etc.
• Engine start function, etc.

Replacement of automatic transaxle assembly

• Perform reset memory
• Input transaxle compensation code into ECM
• Perform road test to allow ECM to learn

• Large shift shock
• Deterioration of fuel efficiency

for Initialization

for Registration

Replacement of ECM

(If transaxle compensation code read from ECM)

• Perform reset memory*2
• Transfer transaxle compensation code
• Perform road test to allow ECM to learn

Replacement of ECM

(If transaxle compensation code not read from ECM)

• Perform reset memory*2
• Reset transaxle compensation code
• Perform road test to allow ECM to learn

Replacement of automatic transaxle fluid

ATF thermal degradation estimate reset

The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly

Replacement of ECM

Code registration (Smart Key System (for Start Function))

• Wireless Door Lock Control System
• Smart Key System (for Entry Function)
• Smart Key System (for Start Function)
• Steering lock function

Suspension, tires, etc.

• Measure ultrasonic sensor detection angle
• Ultrasonic sensor detection angle registration

• Intelligent Clearance Sonar System
• Intuitive Parking Assist System

Rear television camera assembly optical axis adjustment (Back camera position setting)

Parking Assist Monitor System

for Initialization

for Calibration

• Parking assist ECU initialization
• Adjust steering angle
• Television camera assembly optical axis adjustment (Back camera position setting)

Panoramic View Monitor System

for Initialization

for Calibration

Perform headlight ECU sub-assembly LH initialization

Lighting system (for Gasoline Model with Cornering Light)

Front wheel alignment adjustment

Perform system variant learning and acceleration sensor zero point calibration.

• VSC is disabled or malfunctions
• DTCs are output
• Slip indicator light illuminates
• ABS warning light illuminates

(a) Remove the 23 bolts and 2 nuts shown in the illustration.

(b) Remove the timing chain cover assembly by prying between the timing chain cover assembly and cylinder head sub-assembly or cylinder block sub-assembly with a screwdriver with its tip wrapped with protective tape.

NOTICE:

Be careful not to damage the contact surfaces of the cylinder head sub-assembly, cylinder block sub-assembly and timing chain cover assembly.

(c) Remove the oil pump gasket from the cylinder block sub-assembly.