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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1252 (Diesel Fuel Injection [CATA]) >> 23 Diesel Fuel Injection >> Diesel Direct Injection System >> PIEZO Injectors, Removing And Installing >> Removing

Removing

WARNING: This page is about a different car, the 2012 Volkswagen Touareg and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Follow the guidelines for clean working conditions when working on the fuel system. Refer to CLEAN WORKING CONDITIONS AND FUEL SYSTEM WORK INSTRUCTIONS .

Always follow these instructions before and during work.

When replacing an injector, the correction value for the new injector must be programmed into the engine control. Refer to INJECTOR CORRECTION VALUES, CHECK AND ADJUST .

NOTE:

The illustration shows the removal and installation of injectors for cylinder bank 2. The procedure for cylinder bank 1 is almost identical, except for a few steps that are omitted.

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

WARNING:

Mark the allocation of the injectors to the cylinder.

Note rules of cleanliness for working on the fuel injection system.

Always seal any open connections with a suitable cover.

NOTE:

Procedure only for cylinder bank 1: remove the air filter housing upper section and the Mass Airflow Sensor. Refer to OVERVIEW - AIR FILTER .

-- Pull the release pins upward in direction of -arrow- and remove the return line connections from the injectors.

Fig 1: Identifying Release Pins Upward -Arrow-
GWWA15-10029Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector on the injector to be removed.

-- Loosen the union nuts for injector lines -1, 6 and 7- at the injectors with the Union Nut Socket:T40055  .

Fig 2: Identifying Union Fittings For Injector Lines -1, 6 And 7-
GWWA15-10030Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Loosen the union nuts for injector lines -1, 6 and 7- at the high pressure reservoir (rail) with the Hydraulic Line Socket - 14mm:3150  or the Torque Wrench 1331 Insert - Open Jaw - 19mm:VAG1331/5  .

Fig 3: Identifying Union Fittings For Injector Lines -1, 6 And 7-
GWWA15-10030Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the injector covers -arrows- .

Fig 4: Identifying Injector Cover Bolts -Arrows-
GWWA15-10031Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Pull the covers upward and turn them 1 /4 turn (90°).

-- Remove the injector tensioning brackets -arrows- .

Fig 5: Identifying Injector Tensioning Bracket Nuts -Arrows-
GWWA15-10032Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the injectors using the Puller - Unit Injector:T10055  and Puller - Unit Injector - Adapter 1:T10055/1  .

Fig 6: Identifying Puller T10055 With Adapter T10055/1
GWWA15-10033Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Place the injectors on a clean cloth.

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