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Home >> Audi >> 2019 >> Q7 Prestige >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Turbocharger, Supercharger [CREC] >> 21 Turbocharger, Supercharger >> Supercharger >> Rotor Unit, Removing And Installing >> Removing

Rotor Unit, Removing And Installing: Removing

-- Remove the solenoid coupling. Refer to SOLENOID COUPLING, REMOVING AND INSTALLING .

-- Remove the operating head. Refer to OPERATING HEAD, REMOVING AND INSTALLING .

-- Hold the supercharger perpendicular on the engine/transmission holder.

-- Carefully remove the rotor unit upward in direction of -arrow- while doing so pay attention that the compressor housing rotors inner surfaces are not damaged.

Fig 1: Removing Rotor Unit
GWWA21-10951Courtesy of AUDI OF AMERICA, LLC

-- Place the rotor unit carefully aside and protect from dust.

-- To prevent dirt and small parts from entering into the compressor housing, seal the air duct with clean cloths.

CAUTION:

There is a risk of damaging the compressor housing surfaces.

  • If required for the following steps protect the surfaces on the compressor housing with cloths.

-- Bend the seals -arrows- for the rotors needle bearing on both mounts toward the inside with a screwdriver.

Fig 2: Bending Needle Bearing Seals
GWWA21-10954Courtesy of AUDI OF AMERICA, LLC

-- Remove the seals -arrows- for the rotors needle bearing on both mounts with needle nose pliers.

Fig 3: Removing Needle Bearing Seals
GWWA21-10955Courtesy of AUDI OF AMERICA, LLC

-- Break off the needle bearing cages -arrows- on both mounts with a screwdriver.

Fig 4: Breaking Needle Bearing Cages
GWWA21-10956Courtesy of AUDI OF AMERICA, LLC

-- Remove the needle bearing cages -arrows- from both mounts with needle nose pliers.

Fig 5: Removing Needle Bearing Cages
GWWA21-10957Courtesy of AUDI OF AMERICA, LLC

-- Completely remove the loose mount rolls with a magnet.

-- Insert the : VAS501001/4  in the needle bearing sleeve, make sure that the collar -1- points upward.

GWWA21-11099Courtesy of AUDI OF AMERICA, LLC

-- Place the : VAS501001/5  on the : VAS501001/4  the tool labeling points upward.

-- Install the : VAS501001/1  all the way hand-tight in the : VAS501001/4  -1-.

GWWA21-11100Courtesy of AUDI OF AMERICA, LLC

-- Position the : VAS501001/3  the end with the flat front side faces downward.

-- Install the : VAS501001/2  on the spindle.

GWWA21-11101Courtesy of AUDI OF AMERICA, LLC

-- Place the : VAS501001/6  on the thrust nut.

-- Remove the needle bearing sleeve by turning the : VAS501001/6  . At the same time, use a suitable tool to counterhold at the : VAS501001/1  .

GWWA21-11102Courtesy of AUDI OF AMERICA, LLC

-- Remove the sleeve from the second needle bearing in the same way.