seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

Valve control: Repairing > < Engine: Disassembling and assembling
Cylinder head - Components overview
Cylinder head - Components overview
t  Cylinder head: check for deformation → Fig.
t  Cylinder head: Reworking dimensions → Fig.
   
1 - 23 Nm
q   Fit with thread locking agent → ETKA (electronic parts catalogue)
2 - Camshaft wheels
q   The notched belt must be removed prior to removing or installing → Chapter
q   Installation position, fixed with a cotter pin → Item
3 - 100 Nm
q   Use the counterhold -T20018B- to loosen and tighten → Fig.
4 - 10 Nm
q   Fit with thread locking agent → ETKA (electronic parts catalogue)
5 - Rear notched belt guard
6 - Woodruff key
q   Check that it is seated securely
7 - Seal
q   Renew
8 - 10 Nm
9 - Breather pipe
q   To expansion tank
10 - Special bolt - 9 Nm
q   Renew if damaged or leaking.
q   Note correct sequence when tightening → Anchor
11 - Seal
q   Renew if damaged or leaking.
12 - Sealing plug
13 - Cylinder head cover:
q   Removing and fitting → Chapter
q   For removal, unscrew the bolts from the interior towards the exterior
q   For fitting, tighten the bolts from the interior towards the exterior
14 - Cylinder head cover gasket
q   Renew if damaged or leaking.
q   Fit in the spacer sleeves → Item
15 - Cylinder head bolt
q   Renew
q   Use thewrench -T20079-
q   Note the fitting order when loosening → Anchor and tightening → Anchor bolts
16 - 10 Nm
17 - Hall sender -G40-
q   Gold plated contacts
18 - O ring
q   Renew
19 - Cylinder head
q   Cylinder head: Removing and installing → Chapter
q   The sealing surface on the camshaft side may not be reworked
q   See note → Chapter.
q   Valve guides: check → Chapter
q   Valve seats: reworking → Chapter
q   Check for deformation → Fig.
q   Cylinder head: Reworking dimensions → Fig.
q   Renew coolant after replacing
q   Engines with engine codes CCSA, CMXA: toughened inlet and exhaust valves, valve seats made of wear-resistant material.
20 - Joint mouth
21 - 10 Nm
22 - O ring
q   Renew
23 - Cylinder head gasket
q   Renew → Chapter
q   Observe correct installation position of the cylinder head gasket: The Part No. should be legible from inlet side.
q   Renew coolant after replacing

   
Checking cylinder head for distortion
–  Use knife-edge and feeler gauge to measure cylinder head at several points.
t  Maximum permissible deformation: 0.1 mm
  A15-0225
Cylinder head: reworking dimension
–  Reworking the cylinder head (shaving) is only permitted down to minimum dimension -a-.
t  Minimum dimension: a = 132.9 mm.
  A15-0148

Valve control: Repairing > < Engine: Disassembling and assembling