seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Valve gear > < Engine: assembly and dismantling

Leon Mk1

Cylinder head cover: component overview
Cylinder head cover: component overview
  Caution
When installing new pistons the injectors of the clamping pieces must be tightened according to the installation of the high pressure lines with the above-mentioned specified torque → Chapter. The injectors are delivered »hand-tightened«, so that the alignment of the clamping pieces can be matched during the installation of the high pressure lines. Non-observance of this guideline can lead to damage to the engine.
   
1 - Seal
q   Renew if damaged or leaking.
2 - Cylinder head cover
q   removing and fitting → Chapter
3 - O ring
q   Replace
4 - Flexible hose
q   For crankcase ventilation.
q   Press release buttons to remove.
5 - Sealing bush
q   For fuel rail
q   If this is damaged, replace it
6 - Retainer
q   For electrical wiring
7 - Grommet
8 - Clamping piece
9 - 8 Nm
10 - Fuel rail
q   removing and fitting → Chapter
q   Observe rules for cleanliness → Chapter.
q   Do not attempt to bend high-pressure pipes to a different shape
q   Installing high-pressure pipes → Chapter
11 - Bolt, 22 Nm
12 - 8 Nm + 180° (1/2 turn further)
q   Replace
13 - Fuel return line
14 - O ring
q   Replace
15 - Injector (piezo injectors)
q   The following components and seals or O-rings must be replaced after each gearbox renewal: „Screws of the clamping piece“„Copper washer“„O-ring in the adapter shaft of the injector valve“„O-ring from the injector valve return connection“
q   The following components and seals or O-rings must always be replaced when an injector valve is renewed: „Clamping piece “„Screws of the clamping piece“„Copper washer“„O-ring in the adapter shaft of the injector valve“„O-ring from the injector valve return connection“.
q   When re-installing „high-pressure injector pipe“ check taper seats visually for damage, scores and corrosion (always renew if damaged)
q   If they are to be re-installed, the injectors, high-pressure pipes and clamping pieces must always be re-fitted in their original positions (cylinder).
q   removing and fitting → Chapter
16 - O ring
q   Replace
17 - Copper washer
18 - Seal
q   removing and fitting → Chapter
q   In rocker finger cover
19 - Filler cap
20 - Seal
21 - Seal
22 - Retainer
q   For electrical wiring
23 - 9 Nm
q   Observe tightening sequence → Fig..

   
Tightening sequence
l  Observe the correct tightening order.
l  Manually fasten the bolts for the cylinder head cover in the sequence -1 … 6-.
l  Tighten the bolts to 9 Nm in the following order -1 ... 6-.
  N15-10439

Valve gear > < Engine: assembly and dismantling