TT Coupe L4-1.8L Turbo (ATC) (2001)
Connecting Rod: Service and Repair
Pistons and connecting rods, disassembling and assembling
Notes: When working on the engine it should be secured to engine stand with engine bracket VW 540.
1 - Piston ring
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Offset gaps by 1200
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Remove and install with piston ring pliers
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"TOP" faces toward piston crown
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Checking ring gap,Refer to Fig. 1
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Checking ring to groove clearance, Refer to Fig. 2
2 - Piston
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Checking, Refer to Fig. 3
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Mark installation position in relation to connecting rod and cylinder number with a permanent felt - marker.
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Arrow on piston crown points to pulley end
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Install using piston ring clamp
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Refer to Piston and cylinder dimensions.
3 - Connecting rod
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Only replace as a set
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Mark cylinder number - B - .
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Installation position: Marks - A - must be aligned and facing belt pulley side
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With hole for lubricating piston pin
4 - Connecting rod bearing cap
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- Mark cylinder number - B -.
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Installation position: Marks - A - must be aligned and facing belt pulley side
5 - 30 Nm + 1/4 turn (90°) further
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Replace
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Oil threads and contact surface
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To measure radial clearance tighten to 30 Nm, but not further
6 - Pressure relief valve, 27 Nm
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Opens at 2.5 - 3.2 bar
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Do not apply sealant when installing
7 - Oil spray jet
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For piston cooling
8 - Bearing shell
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Note installation position
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Do not interchange used bearing shells (mark)
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Ensure retaining lugs fit tightly in recesses
Axial clearance: