Passat Wagon L4-1781cc 1.8L Turbo (AEB) (1998)
Valve Guide: Service and Repair
Valve guides, replacing
Special tools and equipment
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Drift 3360 and Support 3361
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Hand reamer 3363 and cutting fluid
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Press tool VW 411
Removing
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Check whether valve seat insert rings and, if necessary, cylinder head sealing surface can be reworked.
If NO, do not replace valve guides
Set the support as follows:
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Install mounting pins for cylinder head bolt holes -A- into threaded hole positions 2 and 3.
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Install pin -B- into relevant hole for valve angle.
Outer intake valves: 21.5°
Center intake valve: 15°
Exhaust valve: 20°
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Press worn valve guides out with drift 3360 from camshaft side.
Installing
Note: When the shoulder on the guide makes contact, the pressure must not exceed 10 kN (approx. 1.0 ton) otherwise shoulder may break off.
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Coat new valve guides with oil and press with drift 3360 into cold cylinder head from camshaft side until shoulder makes contact.
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Ream guides out with hand reamer 3363 using plenty of cutting fluid.
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Rework valve seats, Refer to Valve Seat.