'85/'86 MODELS ONWARD ENGINE TYPE M 28. 43/44/45/46
Oil valve stem and install valve. Push assembly sleeve over valve stem. Oil sealing lip of valve stem seal and position on assembly sleeve. Using Special Tool 9225/1 carefully and gently press seal onto valve guide until it is seated.
15 - 112 b Removing and Installing XIX,1987 - Printed in Germany
Removing and Installing Valve Stem Seal
INSTALLING VALVE STEM SEAL '87 MODELS ONWARD
ENGINE TYPE M 28. 41/42
It is essential to place a 1 mm washer on the cylinder-head mating face before installing the valve stem seal.
l.Oil valve stem and install valve. Place 1 mm thick washer on the cylinder-head mating face. Push assembly sleeve over valve stem. Oil sealing lip of valve stem seal and position on assembly sleeve. Using Special Tool 9225/1, push seal carefully and gently onto valve guide until seated.
2.The valve stem seal is correctly seated when Special Tool 9225/1 and washer make contact.
The assembly sleeves are available as spare parts.
Installing Valve Stem Seal, 15 - 112 c '87 Models Onward
CHECKING VALVE GUIDES (32-VALVE ENGINES)
1.Clean valve guides thoroughly.
2.Use a new valve to measure the rocker clearance.
3.Attach dial-gage holder VW 387 to cylinder head. Align dial gage parallel to valve head.
4.Measure rocker play at 10 mm valve lift (distance between valve head and valve seat). Wear limit for intake and exhaust valve guides = 0.80 mm.
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