A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000)
Valve Guide: Service and Repair
Valve guides, replacing
Special tools and equipment
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VW411 punch
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3120 reamer (7mm) and cutting fluid
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3360 driver
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3361 press-in pad
Removing
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Clean cylinder head and check.
Note: Cylinder heads with valve seats that cannot be refaced or cylinder heads that have been resurfaced to the minimum dimension are not suited
for valve guide replacement.
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Insert 3361 press-in pad as follows:
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Install mounting pins for cylinder head bolt holes -A- into threaded hole position -2- and -3-.
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Install pin -B- into relevant hole for valve angle.
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Outer intake valves: 21.5°
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Center intake valve: 15°
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Exhaust valves: 20°
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Using 3360 driver, press out worn valve guides as follows:
Valve guide without collar: from camshaft side
Valve guide with collar (replacement valve guide): from combustion chamber side
Installing
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Using 3360 driver, press new, oiled valve guides from camshaft side to collar into cold cylinder head.
Note: After valve guide with collar is seated, insertion pressure may not exceed 10 kN (2248 lbs. approximately 1.0t), as collar may break off
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Using 3363 reamer -7 mm, ream valve guide. Use cutting fluid.
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Reface valve seats, Refer to Valve Seat, Service and Repair