seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Replacing the pulley side crankshaft seal > < Engine block, flanges

Leon Mk2

Aluminium cylinder block - Assembly overview
Aluminium cylinder block - Assembly overview
  Caution
The crankshaft must not be removed. Just loosening the main bearing caps will cause deformation of the crankshaft bearings. This deformation reduces the bearing clearance. Even if the half-bearings are not replaced, changes in the bearing clearance may cause damage.
If the bearing cap bolts are loosened, the cylinder block must be replaced complete with the crankshaft.
Measuring the main bearing clearance is not possible with normal workshop equipment.
  Note
Clutch repairs: → 5 speed manual gearbox 0AF; Rep. Gr.30
   
1 - 10 Nm
2 - Oil intake pipe
3 - aluminium cylinder block!
4 - Knock sensor
5 - 20 Nm
q   Tightening torque affects the knock sensor function
6 - 60 Nm + retighten 1/4 turn (90º)
q   Replace.
7 - Flywheel
q   To remove and fit the engine flywheel, immobilise it with the retention tool -3067-
8 - Intermediate plate
q   Must sit on dowel sleeves
q   Do not damage/bend when assembling
9 - 12 Nm
q   Replace.
10 - Sealing flange with sender crown and seal
q   With Engine speed sender -G28- (without diagram)
q   Tightening torque for engine speed sensor -G28-, 5 Nm
q   Always replace the sealing flange together with the seal and the sender crown
q   Removing and fitting the sealing flange → Chapter
11 - Seal
q   Replace.
12 - Oil pump:
q   Always replace completely
q   When fitting, remember the crankshaft traction element → Item
q   Must sit on dowel sleeves
q   Removing and fitting → Chapter
13 - Seal
q   replace → Chapter
14 - Traction element
q   Oil well before fitting the oil pump

   

Replacing the pulley side crankshaft seal > < Engine block, flanges