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Home >> Audi >> 2008 >> Q7 4.2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (3.0L - Cylinder Head & VALVETRAIN - Engine Code: CATA) >> 15 Cylinder Head, VALVETRAIN >> Cylinder Head >> Left Cylinder Head Cover, Removing And Installing

Left Cylinder Head Cover, Removing And Installing

WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required 

Removal 

Fig 1: Identifying Engine Cover -Arrows-
GWWA10-11000Courtesy of AUDI OF AMERICA, LLC

-- Carefully pull the engine cover off the 4 bolts one after the other -arrows-.

-- Remove the intake manifold upper section. Refer to INTAKE MANIFOLD UPPER SECTION, REMOVING AND INSTALLING .

Fig 2: Identifying Bolts -Arrows-
GWWA23-10191Courtesy of AUDI OF AMERICA, LLC

-- Remove the oil filler tube by lifting the strap -1- and turning the tuber counter-clockwise -arrow-.

Fig 3: Identifying Tab -1- And Position To Turn Oil Filler Tube (Counterclockwise -Arrow-)
GWWA15-10028Courtesy of AUDI OF AMERICA, LLC

-- Remove electrical connectors from bracket and disconnect.

Fig 4: Electrical Connectors
GWWA26-10747Courtesy of AUDI OF AMERICA, LLC
  1. For Catalyst Temperature Sensor 1 -G20- (Orange) - Only Engines Meeting Emissions Standard BIN 5
  2. For Exhaust Gas Temperature Sensor 3 -G495- (Brown)

-- Disconnect the glow plug connector for cylinders "4" and "5".

Fig 5: Identifying Electrical Connectors -1 Through 4-
GWWA15-10410Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors -1 through 4-.

-- Free up the wiring harness using Pry Lever 80-200.

Vehicles through 05/2010: 

Fig 6: Identifying Bolts -Arrows- And Brackets -1- And -2-
GWWA15-10708Courtesy of AUDI OF AMERICA, LLC

-- Free up the wiring on the cylinder head.

-- Remove the bolts -2- and -3- and push the bracket -1- and -4- with the wiring harness to the side.

Vehicles from 06/2010: 

Fig 7: Identifying Bolts -Arrows-, Brackets -1- And -2-, And Wiring Harness
GWWA15-11021Courtesy of AUDI OF AMERICA, LLC

-- Free up the electric wires on the cylinder head.

-- Remove the bolts -arrows- and move the brackets -1- and -2- and wiring harness to the side.

All Vehicles: 

Fig 8: Identifying High Pressure Line Union Nuts -1 Through 6-
GWWA15-10287Courtesy of AUDI OF AMERICA, LLC

-- Mark the injector high pressure line for re-Installation.

-- Remove the high pressure lines by loosening the union nuts -1 through 6-. .

-- Remove the injectors. Refer to INJECTOR .

Fig 9: Identifying Puller T10055 With Adapter T10055/1
GWWA15-10033Courtesy of AUDI OF AMERICA, LLC

-- Loosen the cylinder head cover bolts -arrows- in a diagonal sequence.

Fig 10: Cylinder Head Cover Bolts
GWWA15-10034Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts and the cylinder head cover.

Installation 

Install in reverse order of removal. Note the following:

NOTE:

Replace the o-ring.

Replace the cylinder head seal if it is damaged.

Replace the cylinder head cover bolts when replacing the damaged seal.

-- Clean the sealing surfaces; they must be free of oil and grease.

-- Tighten cylinder head cover bolts, refer to Figure.

-- Install the injectors, high pressure lines and intake manifold upper section. Refer to INTAKE MANIFOLD UPPER SECTION, REMOVING AND INSTALLING .

-- Perform a leak test on the fuel system. Refer to FUEL SYSTEM LEAK TEST .