Seat Leon >> Assembly overview - drive unit of air conditioner compressor

Air conditioning system

  1. - Poly-V belt
    • Removal and installation
    • Mark the direction of rotation and ensure that do not reverse it when installing
  2. - Bracket for ancillary mechanical units
    • Removal and installation
  3. - O-ring
    • Moisten with refrigeration oil before fitting
  4. - Bolt.
    • Tightening torque
  5. - Refrigerant line, high-pressure side
  6. - Refrigerant line, low-pressure side
  7. - Bolt.
    • Tightening torque
  8. - O-ring
    • Moisten with refrigeration oil before fitting
  9. - Air conditioner compressor regulating valve - N280-
  10. - Air conditioning compressor
    • Detaching and attaching refrigerant pipe
    • Removing and installing air conditioning compressor from and to bracket
    • Removing and fitting
  11. - Bolt.
    • 3 off
    • 25 Nm
  12. - Pulley with overload safeguard
    • Assembly overview
  13. - Dowel sleeves
    • 2 off

Assembly overview - belt pulley

Pulley: Assembly overview, air conditioner compressor, Denso

Air conditioning system

  1. - Bolt.
    • 3 off
    • 4.5 Nm
  2. - Cap
  3. - Nut
    • 25 Nm
  4. - Drive plate
    • With overload protection device; triggered if torque is too great (e.g.

      if air conditioner compressor cannot rotate freely) causing pulley to free-wheel without driving air conditioner compressor

  5. - Circlip
    • Renewing.
    • Ensure correct positioning - flat side facing air conditioner compressor
  6. - Pulley
    • Removing and fitting
  7. - Air conditioning compressor
    • The drive shaft for the air conditioner compressor must be cleaned before installing the pulley

Pulley: Assembly overview, air conditioner compressor, Sanden

Air conditioning system

  1. - Nut
    • 25 Nm

Note A plastic cap is additionally fitted to protect the thread of the air conditioner compressor drive shaft (this cap is not shown in the illustration).

  • To unfasten and tighten the hexagon nut, hold the pulley in position with a commercially available oil filter strap wrench.
  • Use a thread cutter for example to remove the locking fluid applied to the thread of the nut on screwing in. Otherwise there is a danger of the drive shaft shearing off on next removal.
  • Use a wire brush to clean the thread of the air conditioner compressor drive shaft.
  • Apply locking fluid when fitting the nut. Locking fluid.
  1. - Bolt.
    • 12 Nm
    • To unfasten and tighten the bolts, hold the pulley in position with a commercially available oil filter strap wrench.
    • Threaded holes which take self-locking bolts or bolts coated with locking fluid must be cleaned (using a tap or similar). Otherwise there is a danger of the bolts shearing off the next time they are removed.
    • Clean thread of bolts from remnants of locking fluid using wire brush. Then apply locking fluid and fit bolts. Locking fluid.
  2. - Drive plate
    • With overload safeguard (attachment of spring elements); tripped in the event of excessive torque (e.g.stiff air conditioner compressor) and the pulley just free-wheels without driving the air conditioner compressor
    • The spring elements of the drive plate dampen vibrations and reduce noise
  3. - Circlip
    • Install in correct position; insertion bevel -A- facing away from air conditioner compressor (flat side shows towards compressor)
  4. - Pulley
    • With rubber elements -B- and threaded plates -C- for isolating the pulley from the air conditioner compressor drive shaft, dampening vibrations and reducing noise.

Note

  • Depending on the version, the threaded plates may also be linked by way of a ring.
  • "Cold country" vehicles (e.g. central and northern Europe) may be fitted with air conditioner compressors with a smaller capacity.

    On these air conditioner compressors, the pulley is slightly different to the version shown here (e.g. no rubber elements -B-) .

  1. - Air conditioning compressor
    • Clean the air conditioner compressor drive shaft before fitting the pulley.
    Detaching and attaching air conditioner compressor at bracket
    Special tools and workshop equipment required Engine bung set - VAS 6122- Removal: Vehicles with TDI engine: Open the clamps -1- and -2-and disconnect air intake hose. Seal open lines ...

    See also:

    Removing and installing electronically controlled damping control unit - J250-
    Removing and installing electronically controlled damping control unit - J250- , saloon Special tools and workshop equipment required Vehicle diagnosis tester Removing Location: electronica ...