Beetle L4-1.9L DSL Turbo (ALH) (1998)
Fig. 3 Cylinder bores, checking
Special tools and equipment
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Internal dial gauge 50 to 100 mm
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Take measurements at 3 positions in both lateral -A- and longitudinal -B- directions, as illustrated.
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deviation from nominal dimension: 010 mm maximum
Note: Do NOT measure the cylinder bores when the block is mounted on a repair stand using the VW 540 adaptor bracket. Bending stresses
resulting from the mass overhang will make incorrect measurements likely.
Fig. 4 Piston installation position and piston/cylinder allocation
Piston in cylinders 1 and 2:
Larger intake valve chamber points toward flywheel (arrows)
Piston in cylinders 3 and 4:
Larger intake valve chamber points toward belt pulley side (arrows).
Note: New piston/cylinder allocations are shown by a colored mark on the piston crown.
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Piston for cylinder 1 and 2: marked 1/2
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Piston for cylinder 3 and 4: marked 3/4