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Removing and installing cylinder head cover > < Cylinder head

A4 Cabriolet Mk2

Cylinder head - exploded view
   
Cylinder head - exploded view
1 - Hall sender -G40-
q   For camshaft position
2 - 10 Nm
q   Apply locking fluid when installing; refer to → Electronic parts catalogue
3 - 15 Nm
4 - 100 Nm
q   Use counterhold tool -T10051- when loosening and tightening → Chapter „Removing and installing camshaft“
5 - Hub
q   With sender wheel for Hall sender -G40-
q   To remove, use puller -T10052- → Chapter „Removing and installing camshaft“
6 - Cylinder head bolt
q   Renew
q   Note correct sequence when loosening → Anchor
q   Note correct sequence when tightening → Anchor
q   Ensure that washers → Item are fitted in cylinder head
7 - Gasket for cylinder head cover
q   Renew if damaged or leaking
q   Only available together with cylinder head cover
q   Before fitting, apply sealant at sealing points → Fig.
q   Sealant → Electronic parts catalogue
q   Insert lugs into holes on cylinder head
8 - Crankcase breather hose
9 - Cap
10 - Seal
q   Renew if damaged or leaking
11 - Filler cap
12 - Special bolt, 10 Nm
q   Renew if damaged or leaking
q   Note correct sequence for loosening and tightening → Chapter „Removing and installing cylinder head cover“
13 - Cylinder head cover
q   Removing and installing → Chapter
14 - Gasket
q   Renew
15 - Tandem pump
q   Removing and installing → Rep. Gr.20
16 - M6 = 9 Nm; M8 = 22 Nm
17 - 9 Nm
18 - Connection
19 - Seal
q   Renew
20 - Cylinder head
q   Removing → Chapter
  Caution
t  Vehicles with ceramic glow plugs: The ceramic glow plugs fitted in this engine are very easily damaged and project slightly beyond the cylinder head gasket surface, so do NOT lay the cylinder head down on the gasket side while the glow plugs are still installed.
t  Handling ceramic glow plugs → Chapter.
q   Checking for distortion → Fig.
q   Installing → Anchor
q   If renewed, change coolant and engine oil
21 - Oil supply pipe
q   To turbocharger
22 - Banjo bolt, 25 Nm
23 - Seals
q   Renew
24 - Cylinder head gasket
q   Renewing → Chapter „Removing and installing cylinder head“
q   Note marking → Fig.
q   If renewed, change coolant and engine oil

   
Checking cylinder head for distortion
–  Use straightedge 500 mm -VAS 6075- and feeler gauge to measure cylinder head for distortion at several points.
l  Maximum permissible distortion: 0.1 mm.
  Note
The cylinder heads of diesel engines must not be machined.
  A15-0287
Cylinder head gasket identification
t  Part No. = -arrow 1-
t  Production code = -arrow 2- (can be disregarded)
t  Holes = -arrow 3-
  Note
Cylinder head gaskets of different thicknesses are fitted depending on the amount of piston projection → Chapter. When renewing just the cylinder head gasket, the new gasket should have the same identification as the old one.
  A15-0802
Sealing points between bearing cap and cylinder head
–  Apply one drop of sealant (Ø approx. 5 mm) to each sealing point at front bearing cap/cylinder head -arrows-; for sealant refer to → Electronic parts catalogue.
  A15-0520
–  Apply one drop of sealant (Ø approx. 5 mm) to each sealing point at rear bearing cap/cylinder head -arrows-; for sealant refer to → Electronic parts catalogue.
  A15-0521

Removing and installing cylinder head cover > < Cylinder head