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Crankshaft dimensions > < Crankshaft

Leon Mk1

Crankshaft: disassembly and assembly
   
Crankshaft: disassembly and assembly
  Note!
t  The cylinder block will be fitted with the correct thickness bearing shells at the factory. The thickness will be indicated using points of varying colours
t  For assembly, the engine must be secured to the -AR2204A- assembly stand with the -T20082- engine bracket.
1 - Half bearing 1, 2, 4 and 5
q   For cylinder block with oil groove
q   Do not mix up used bearing shells (mark them)
q   Only use new half bearings that are marked with the same colours as those being replaced → Fig.
2 - Cog wheel for chain
q   For oil pump drive
3 - Half bearing
q   For bearing cap without oil groove
q   Do not mix up used bearing shells (mark them)
4 - Thrust washers
q   For cylinder block, bearing 3
q   Note fixing arrangement
5 - 65 Nm + 1/4 turn (90°)
q   Replacement
q   Tighten to 65 Nm when measuring radial clearance
6 - Bearing caps
q   Bearing cap 1: pulley side
q   Bearing cap 3: with rebates for the thrust washers
q   Cylinder block bearing shell rims and bearing cap must coincide
7 - 10 Nm + 1/4 turn (90°)
q   Replacement
q   Each time that the bolts are loosened, the generator wheel must be replaced → Fig.
8 - Sender wheel
q   For engine speed sender -G28-
q   Can only be fitted in one position (the holes are offset)
q   Each time that the bolts are loosened, the generator wheel must be replaced
q   Removing and fitting → Fig.
9 - Crankshaft
q   Axial play:
q   new: 0,07 … 0,23 mm
q   Wear limit: 0,30 mm
q   Measure the radial play using a Plastigage
q   New: 0,02 … 0,04 mm
q   Wear limit: 0,15 mm
q   Do not rotate the crankshaft when checking the radial clearance
q   Do not rotate the crankshaft when checking the radial clearance
10 - Half bearing 3
q   For cylinder block with oil groove
q   For bearing cap without oil groove
q   Do not mix up used bearing shells (mark them)
q   Only use new half bearings that are marked with the same colours as those being replaced → Fig.

   
Sender wheel: removing and fitting
–  Always -1- replace the generator wheel -2- when the bolts have been loosened.
  Note!
t  After a second assembly, the countersunk bolts holes are so deformed that the heads of the bolts make contact with the crankshaft -3- and the sender wheel remains loose.
t  The generator wheel may only be fitted in one position; the holes are asymmetrically placed.
  A13-0150
Assigning the crankshaft bearing shells for the cylinder block
In the factory the correct thickness bearing shells are selected. To indicate the thickness of the half bearing shell used, colour points are used.
Instead, the bearings that must be fitted will be indicated using letters on the lower seal surface of the cylinder block.
  A13-0405
Letters on the
cylinder block		Colour of bearing shell
S=black
R=red
G=yellow

  Note!
t  The arrow indicates direction of movement.
t  The lower bearings of the crankshaft are supplied as replacements marked with a yellow colour.
t  If the colour markings have not been made or they cannot be seen clearly, use the central half bearing shell marked with red.
   

Crankshaft dimensions > < Crankshaft