seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

Removing and installing cylinder head cover > < Cylinder head
Assembly overview - cylinder head
   
Assembly overview - cylinder head
1 - Toothed belt guard upper part
2 - Toothed belt
q   Mark direction of rotation before removing.
q   Check for wear.
q   Do not kink.
q   Removing, installing and tensioning → Chapter.
3 - 10 Nm
q   Renew
4 - 25 Nm
5 - 100 Nm
6 - Camshaft pulley
7 - Hub
q   With sender wheel.
q   Use counter-hold tool -T10051- to loosen and tighten.
q   To remove, use puller -T10052-.
q   Removing and installing → Chapter.
8 - Rear toothed belt guard
9 - Sealing grommet
q   Renew if damaged.
10 - Hall sender -G40-
q   For camshaft position
q   To remove sealing grommet → Item, unbutton from toothed belt guard.
11 - Cylinder head bolt
q   Renew
q   Observe sequence when loosening and tightening → Chapter.
q   Before installing, place washers in cylinder head → Item.
12 - Cylinder head cover
q   With pressure relief valve for crankcase breather and vacuum reservoir
q   Thoroughly clean sealant groove and securing bolts before fitting a new gasket.
q   Before fitting, thoroughly clean sealing surface of cylinder head with clean cloth.
q   Removing and installing → Chapter.
13 - Crankcase breather hose
q   To intake manifold between air filter housing and turbocharger
14 - Pressure regulating valve
q   For crankcase breather.
15 - Cap
q   Renew seal if damaged
16 - 10 Nm
q   Observe tightening sequence → Chapter
17 - Vacuum hose
q   To charge pressure control solenoid valve -N75-.
18 - Cylinder head cover gasket
q   Renew if damaged.
q   Thoroughly clean sealant groove and securing bolts before fitting a new gasket.
q   Before putting in place, seal transitions with “AMV 174 004 01”, → Chapter Removing and installing cylinder head cover.
19 - 20 Nm
20 - Lifting eye
21 - Unit injector
q   Removing and installing → Chapter.
22 - 10 Nm
23 - Central connector
q   For unit injector -N240-...-243-
24 - From brake servo
25 - Tandem pump
q   For fuel and vacuum supply.
q   Checking → Chapter.
q   Removing and installing → Chapter.
q   Must not be taken apart
26 - Supply line
q   From fuel filter.
q   White or with white marking.
q   Check for secure seating.
q   Secure with spring-type clips.
27 - Return line
q   To fuel filter
q   Blue or with blue marking.
q   Check for secure seating.
q   Secure with spring-type clips.
28 - Gasket
q   Renew
29 - Bolt, 25 Nm
30 - Bracket
q   For charge air hose
31 - Cylinder head
q   Removing and installing → Chapter.
q   If renewed, change coolant in entire system.
32 - Lifting eye
q   With mounting pin for engine cover, 9 Nm
33 - Cylinder head gasket
q   Renew
q   Note marking → Fig.
q   If renewed, change coolant in entire system.
34 - Ceramic glow plug
q   15 Nm
q   Installation instructions and notes should be strictly adhered to → Chapter
35 - Tensioning roller
36 - 20 Nm + 1/8 turn (45°) further

   
Checking cylinder head for distortion
Special tools and workshop equipment required
t  Straight edge
t  Feeler gauges
Max. permissible distortion: 0.1 mm.
  Note
Reworking diesel cylinder heads is not permissible.
  V15-0673
Cylinder head gasket identification
t  Part No. = -arrow 1-
t  Production control code = -arrow 2- (disregard)
t  Holes = -arrow 3-
t  Installation position: identification faces upwards.
  Note
Different thicknesses of cylinder head gasket are fitted depending on the piston projection. When renewing cylinder head gasket, install new gasket with same identification.
  A15-0105

Removing and installing cylinder head cover > < Cylinder head