A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000)
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Do not turn crankshaft when measuring radial play with Plastigage in place
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To measure radial play, tighten nut -1- to 30 Nm (22 ft. lbs.) but not any further
6 - Cylinder block
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Check bore, Refer to Fig. 4
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Piston and cylinder bore dimensions, Refer to Piston, Specifications
7 - Bearing shell
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With oil bore for piston pin lubrication
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Verify correct installation position
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Do not interchange used connecting rod bearing shells (mark accordingly)
Axial play:
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New: 0.10 - 0.35 mm (0.004 - 0.014 inch)
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Wear limit: 0.40 mm (0.016 inch)
Measure radial play using Plastigage:
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New: 0.01 - 0.05 mm (0.0004 - 0.0020 inch)
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Wear limit: 0.12 mm (0.0047 inch)
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Do not turn crankshaft when measuring radial play with Plastigage in place
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To measure radial play, tighten nut -1to 30 Nm (22 ft. lbs.) but not any further
8 - Connecting rod
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Replace only as a set
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Markings -B- indicate which cylinder each rod belongs to
Installed position:
Marks -A- point toward belt pulley side
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With oil bore for piston pin lubrication
9 - Circlip
10 - Piston pin
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If stiff, warm pistons to approximately 60°C (140°F)
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When removing and installing, use VW222a pilot drift
11 - Piston rings
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Offset by 120°
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Use piston ring pliers to remove and install
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Marking "TOP" must point to piston head
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Checking piston ring end gap, Refer to Fig. 1
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Checking piston ring side clearance, Refer to Fig. 2
12 - Pistons
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Checking
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Mark installation position and matching cylinder
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Arrow on piston head points toward belt pulley side
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Install using piston ring compressor
13 - Connecting rod bolt Always replace
Fig. 1 Checking piston ring end gap
