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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> 87 Air Conditioning >> A/C Compressor >> Belt Pulley, Removing And Installing >> BELT PULLEY (WITHOUT A/C Clutch -N25-), REMOVING AND INSTALLING, A/C COMPRESSOR "Denso" MANUFACTURER VERSION "2" >> Installing

BELT PULLEY (WITHOUT A/C Clutch -N25-), REMOVING AND INSTALLING, A/C COMPRESSOR "Denso" MANUFACTURER VERSION "2": Installing

Fig 1: Identifying Circlip And Pulley
GWWA87-0633Courtesy of AUDI OF AMERICA, LLC

-- Clean the A/C compressor flange before installing the belt pulley.

-- Install the belt pulley -B-.

-- Insert the new circlip -A- on the correct side; the side with beveled insertion edge -C- faces away from the A/C compressor (install flat side facing A/C compressor).

-- Insert the rubber elements -D- in belt pulley -B- as shown.

-- When installing the drive plate, coat the rubber elements -D- lightly, for example, with tire mounting paste or soap solution (as lubricant).

-- Insert the drive plate -C- into the rubber elements -D- (see image above) until it rests on the compressor shaft -B-.

Fig 2: Identifying Drive Plate, Belt Pulley, And Circlip
GWWA87-0632Courtesy of AUDI OF AMERICA, LLC

-- Screw in the drive plate -C- by turning in the direction of the arrow -F- on to the compressor shaft -B-.

Fig 3: Identifying Drive Plate, Belt Pulley, And Circlip
GWWA87-0632Courtesy of AUDI OF AMERICA, LLC

-- Tighten the drive plate -C- (via the belt pulley -D-) by rotating in the direction of the arrow -F- using a commercially available strap wrench (with cloth tape). While doing so, hold the compressor shaft -B- securely with a commercially available hex socket wrench.

-- Install the circlip -A- (with rubber washer vulcanized on).