Passat Sedan L4-1896cc 1.9L DSL Turbo (1Z) (1997)
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Pistons cylinders 1 and 2:
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Larger intake valve chamber toward flywheel (arrows)
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Pistons cylinders 3 and 4:
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Larger intake valve chamber toward pulleys arrows.
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When replacing pistons, protrusion must be measured and the correct head gasket selected, refer to Cylinder Head Gasket.
NOTE: Piston orientation is indicated by a colored mark on the piston crown.
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Pistons for cylinders 1 and 2: marked 1/2.
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Pistons for cylinders 3 and 4: marked 3/4.
Piston Pin (3)
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If difficult to remove, heat piston to 60°C.
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Remove and install using press tool No. VW 222a, or equivalent.
Connecting Rod (5)
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Only replace as a set.
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Mark cylinder number on rod -A-.
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Installation position:
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Marking -B- faces toward pulley end.
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When replacing rods, piston protrusion must be measured and the correct head gasket selected, refer to Cylinder Head Gasket.
Bearing Shell (6)
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Note installed position
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Do not interchange used bearing shells
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Ensure that retaining lugs fit tightly in recesses
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Axial clearance:
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Wear limit: 0.37 mm
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Check radial clearance with Plastigage:
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Wear limit: 0.08 mm
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Do not rotate crankshaft when checking radial clearance.
Connecting Rod Bearing Cap (8)
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Note installation position.
Locating Pin (9)
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The fitted pin must seat securely in the connecting rod, not in the bearing cap.
Oil Spray Jet (10)
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For piston cooling.
Bolt (11)
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Tighten to: 10 Nm (7 ft. lbs).
Connecting Rod Bolt (12)
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Always Replace.
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Tighten in two stages:
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First stage, tighten to: 30 Nm (22 ft. lbs.)
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Second stage, turn: an additional 90° (1/4 turn).
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Oil threads and contact surfaces.
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Use old bolts to measure radial clearance.