Passat Wagon L4-2.0L (ABA) (1995)
Piston: Service and Repair
Pistons And Connecting Rods, Disassembling And Assembling
1 - Piston ring
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Offset gaps by 120°
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Remove and install with piston ring pliers
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"Top" marking faces toward piston crown
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Checking ring gap - Fig. 1
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Checking ring/groove clearance - Fig. 2
2 - Piston
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Checking - Fig. 3
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Mark installation position and cylinder number
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Arrow on piston crown points toward pulley end
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Install only with piston ring compressor
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Dimensions - Fig. 4
3 - Connecting rod
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With oil supply hole for piston pin lubrication
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Replace only as complete set
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Installation position: marking
-A- points toward pulley end
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Make matching marks
-B- for cylinder number
4 - Connecting rod bearing cap
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Note installation position
5 - 30 Nm (22 ft lb) plus additional 1/4-turn (90°)
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Oil threads and contact surface
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Measuring radial clearance: tighten to 30 Nm (22 ft lb) only, NOT additional 1/4-turn (90°)
CAUTION!
DO NOT turn crankshaft while measuring radial clearance.
6 - Pressure relief valve
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Tightening torque: 27 Nm (20 ft lb)