Toyota Avalon Service & Repair Manual: 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 EGR valve assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedures

Effect/Inoperative Function when Necessary Procedure not Performed

Link

  • Replacement of EGR valve assembly
  • Gas leak from exhaust system is repaired

Inspection After Repair

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

NOTICE:

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. DRAIN ENGINE COOLANT (for Engine)

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2. DISCONNECT ENGINE WIRE

(a) Disengage the 3 hose clamps and disconnect the No. 1 fuel vapor feed hose and No. 2 fuel vapor feed hose.

*1

No. 1 Fuel Vapor Feed Hose

*2

No. 2 Fuel Vapor Feed Hose

(b) Disconnect the EGR valve assembly connector.

(c) Remove the bolt.

(d) Disengage the 2 wire harness clamps and disconnect the engine wire.

3. DISCONNECT EGR COOLER ASSEMBLY

(a) Remove the 2 bolts and disconnect the EGR cooler assembly from the EGR valve assembly.

(b) Remove the EGR valve gasket from the EGR valve assembly.

4. REMOVE NO. 1 EGR PIPE SUB-ASSEMBLY

(a) Using an 8 mm socket wrench, remove the 4 bolts and No. 1 EGR pipe sub-assembly from the intake manifold and EGR valve assembly.

(b) Remove the EGR valve adapter gasket from the No. 1 EGR pipe sub-assembly.

(c) Remove the EGR inlet gasket from the intake manifold.

5. REMOVE EGR VALVE ASSEMBLY

(a) Slide the 2 clips and disconnect the No. 4 water by-pass hose and No. 8 water by-pass hose from the EGR valve assembly.

*1

No. 4 Water By-pass Hose

*2

No. 8 Water By-pass Hose

(b) Using an 8 mm socket wrench, remove the bolt and disconnect the fuel pipe sub-assembly from the EGR valve bracket.

(c) Using the 8 mm socket wrench, remove the bolt.

(d) Remove the EGR valve assembly with the EGR valve bracket from the camshaft housing vertically.

*a

Pin

*b

Hole

(e) Using the 8 mm socket wrench, remove the bolt and EGR valve assembly from the EGR valve bracket.

    Installation

    Emission Control System

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