Audi Q3 Owners & Service Manuals

Audi Q3: Belt Pulley, Removing and Installing, Valeo A/C Compressor

Audi Q3 (8U) 2011-2018 Service Manual / Heating, Ventilation & Air Conditioning / Air Conditioning / A/C Compressor / Belt Pulley, Removing and Installing, Valeo A/C Compressor

  Note

  • On A/C compressors with part number 1K0 820 803 as of index "N", the drive plate splines are bonded to Air Conditioning (A/C) compressor shaft splines, removing drive plate. Refer to → Chapter "Belt Pulley, Removing and Installing, Valeo A/C Compressor".
  • On A/C compressors with part number 1K0 820 803 up to index "L", the drive plate splines are not bonded to A/C compressor shaft splines, removing drive plate. On these A/C compressors it may be possible that the drive plate splines are worn off and the A/C compressor is no longer driven. Refer to → Chapter "Belt Pulley, Removing and Installing, Valeo A/C Compressor". In this case, check the A/C compressor for freedom of movement and if necessary replace drive plate, use the repair set 1K0 898 814 to do so. Refer to the Parts Catalog.
  • If the drive plate overload protection -D- has triggered, the belt pulley turns freely without driving the A/C compressor.
  • Check the A/C compressor for freedom of movement by turning at bolt -B-, replace a A/C compressor with belt pulley that turns with resistance.
  • If compressor moves freely, in this case remove bolts -C- and remove drive plate. Then hold drive plate hub firmly in place using pliers to loosen bolt -B-.

Audi Q3. A87-10246

Removing

- Remove the ribbed belt. Refer to → Engine Mechanical, Fuel Injection and Ignition; Rep. Gr.13; Cylinder Block, Belt Pulley Side; Ribbed Belt, Removing and Installing.

- To loosen the bolt -B- using a commercially available strap wrench (with cloth tape), hold the belt pulley -A- firmly.

  Note

If belt pulley splines have been worn away, the bolt -B- cannot be loosened (the A/C compressor shaft turns along with the bolt).

- For a belt pulley with worn out splines, remove the bolts -C-.

Audi Q3. A87-10246

- Position the disc -A- - the flat side faces outward.

- Secure the drive plate with the disc -A- from the Repair Kit -1K0 898 814- on the A/C compressor shaft by mounting the washers -B- and tightening the bolts -C-.

- Remove the bolt -D-.

- Remove the washer and drive plate.

Audi Q3. A87-10247

  Note

If the drive plate is bonded to the A/C compressor shaft, press off the belt pulley.

- Install the long bolts -C- through the holes on the drive plate -A- in the belt pulley -D-.

- Using a commercially available M8 bolt -B- (strength category at least 10.9), press the drive plate -A- off of the A/C compressor shaft, while counterholding the belt pulley -D- with a commercially available strap wrench (with cloth tape).

  Note

If the drive plate -A- has already been replaced once in customer service and was bonded at that time with sealant, it may be joined so securely to the A/C compressor shaft that it can no longer be pressed off. The entire A/C compressor must be replaced.

- Remove the circlip, refer to -item 4- and remove the belt pulley.

Audi Q3. A87-10248

Installing

Installation is done is reverse order, observe the following:

- Check the input shaft splines -B- of the A/C compressor and the drive plate splines -C- for wear. Replace if necessary.

  Caution

Do not use pressurized air when cleaning, dirt particles may impinge on the compressor shaft seal and damage it when blowing out contaminants.

- Clean the input shaft splines -B- of the A/C compressor, the belt pulley -A- and the drive plate splines -C- with a commercially available cleaning solution so that they are free of rust, abrasion, old adhesive and other particles.

- The threaded bolt holes, into which the self-locking bolts or bolts with locking compound were installed, must be cleaned (for example with a thread tap). Otherwise, there is a danger that the bolts break off during assembly.

- Clean the thread of the bolts, which are screwed in with locking compound, with a wire brush.

- Mount the belt pulley on the A/C compressor input shaft and insert the circlip.

- Thinly apply sealant on the input shaft splines -B- of the A/C compressor and the drive plate splines -C-. For the sealant, refer to the Parts Catalog.

  Note

  • Make sure that the sealant does not get onto the seal for the A/C compressor input shaft (in the A/C compressor).
  • The sealant is also an adhesive, after hardening the drive plate can no longer be removed.
  • After applying the sealant, the drive plate must be installed within five minutes and the bolts tightened to specification.

Audi Q3. A87-10249

- Slide the drive plate onto the A/C compressor input shaft.

- Tighten the bolts -B and C- to the tightening specification.

  Caution

Risk of damaging the A/C compressor.

After assembling the drive plate, the engine may only be started after one hour, which is the time needed for the sealant to become rigid.

- Install the ribbed belt. Refer to → Engine Mechanical, Fuel Injection and Ignition; Rep. Gr.13; Cylinder Block, Belt Pulley Side; Ribbed Belt, Removing and Installing.

Audi Q3. A87-10246

Belt Pulley, Removing and Installing, Delphi A/C Compressor

  Note

  • The "Delphi" A/C compressor belt pulley cannot be removed separately. If there is a complaint, replace the entire A/C compressor. Refer to the Parts Catalog and → Chapter "A/C Compressor, Removing and Installing".
  • The belt pulley on the "Delphi" A/C compressor currently is identical in construction to the belt pulley on the "Sanden" A/C compressor, version "2". However, the drive plate is secured with a self-locking bolt, refer to item -2- to the A/C compressor shaft.

- Replace the A/C compressor. Refer to → Chapter "A/C Compressor, Removing and Installing on Bracket".

    READ NEXT:

     Actuators

     Overview - Front Actuators

    Overview - Front Actuators, Air Distribution Housing, Left Door Control 1 - Screw 1 Nm Quantity: 3 2 - Central Air Door Motor -V70- With Central Door Motor Pos

     Temperature Regulator Door Motor -V68-, Removing and Installing

      Note Only for vehicles with a manual climate control system (or heater without Air Conditioning (A/C) system). The color-coded connecting elements on the actuator for the identifica

    SEE MORE:

     Trailer Hitch

    Overview - Trailer Hitch Socket and Towing Recognition Control Module 1 - LED Indicator Lamp Trailer Hitch -Locked- Indicator Lamp -K226-, Trailer Hitch -Unlocked- Indicator Lamp -K227- Make sure the trailer hitch is locked correctly Removing and installing. Refer to →&nbs

     Adding engine oil

    Fig. 149 Engine compartment: engine oil filling opening cover (example) Observe the safety precautions. Turn the engine off. Open the hood. Unscrew the cap for the engine oil filler opening fig. 149. Carefully add 0.5 quart (0.5 liter) of the correct oil. Check the oil level again after

    © 2019-2025 Copyright www.auq3.net