Audi AMB Service Manual page 443

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Fig. 144: Checking Cylinder Head For Distortion
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Check cylinder head for distortion at several points using knife-edge straightedge and feeler gauge.
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Max. permissible distortion: 0.1 mm
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Cylinder head resurfacing limit
Fig. 145: Cylinder Head Resurfacing Limit
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Resurfacing the cylinder head (skimming) is only permitted down to minimum dimension - a -.
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Minimum dimension: - a - = 139.20 mm
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Sealing transition points between double bearing cap and cylinder head (2 points):
2005 Audi A4 Quattro
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