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Engine: Dismantling and assembling > < Pistons and conrods: dismantling and assembling

Leon Mk1

Aluminium cylinder block
   
Aluminium cylinder block
  Caution
The crankshaft must not be removed. Just loosening the main bearing caps will cause deformation of the cylinder block bearing pedestals. This deformation will cause a reduction of the bearing clearance. Even if the bearing shells are not renewed bearing damage could occur due to a different bearing clearance.
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!
t  Cluth repairs:
t  → Rep. Gr.30
1 - 10 Nm
2 - Suction pipe
q   Clean filter if soiled
3 - Aluminium cylinder block
4 - Knock sensor
5 - 20 Nm
q   Tightening torque influences the function of the knock sensor
6 - Tighten to 60 Nm + continue tightening 1/4 turn (90°)
q   Renew
7 - Flywheel
q   To remove and install lock with counter-hold -T20075A-
8 - 12 Nm
q   Renew
9 - Sealing flange with sender wheel and oil seal
q   Only renew complete with oil seal and sender wheel
q   Removing and installing sealing flange → Chapter, Renewing crankshaft sealing flange, flywheel end
10 - Gasket
q   Renew
11 - Oil pump
q   Only renew complete
q   When installing note following item on crankshaft → Item
q   Must be located on dowel sleeves
q   Removing and installing → Chapter
12 - Sealing ring
q   Renew → Chapter
13 - Follower
q   Coat with oil before installing oil pump

   

Engine: Dismantling and assembling > < Pistons and conrods: dismantling and assembling