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2.4 Belt Pulley, Denso A/C Compressor,
Version 1
Note
♦
If overload protection of pulley triggers, check the A/C com‐
pressor for ease of motion before replacing the pulley. If the
A/C compressor creates friction, replace it completely.
♦
To remove belt pulley, it depends on engine version if it is
necessary to remove A/C compressor from engine. Refer to
⇒ “5.1 A/C Compressor, Removing From Bracket“,
page 103 .
♦
Different versions of the pulley may be installed, depending on
A/C compressor construction type and engine version. Refer
to Electronic Parts Catalog (ETKA).
♦
Belt Pulley, removing and installing, refer to
⇒ “5.6.1 Denso A/C Compressor (Version 1)“, page 117 .
1 - Circlip With Rubber Disc
❑ Remove carefully using
a small screwdriver or
needle-nose pliers (es‐
pecially note belt pulley
when doing this).
❑ Removing and instal‐
ling, refer to
⇒ “5.6.1 Denso A/C
Compressor (Version
1)“, page 117 .
❑ The rubber disc that is
vulcanized on serves as
noise insulation during
low compressor output
when engine is idling.
2 - Drive Plate
❑ Attached to the A/C
compressor input shaft.
❑ Different versions. Re‐
fer to Electronic Parts
Catalog (ETKA).
❑ The overload protection
takes over when the tor‐
que is excessive (for ex‐
ample, if the A/C com‐
pressor runs with resist‐
ance) and the belt pulley
runs freely without driv‐
ing the A/C compressor.
❑ Removing and instal‐
ling, refer to
⇒ “5.6.1 Denso A/C
Compressor (Version
1)“, page 117 .
❑ Tightening specification
35 Nm.
3 - Circlip
❑ Replace
❑ Install on correct side (flat side toward A/C compressor).
Audi TT 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 01.2011
52 Rep. Gr.87 - Air Conditioning
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