Valve Gear, Assembly Overview
Valve gear, assembly overview
1 - 20 Nm plus an additional 1/4 turn (90°)
^ Replace
^ Observe sequence for loosening and tightening.
2 - Rocker lever shaft
^ Do not interchange
3 - Cylinder head bolt
^ Replace
^ Observe sequence for loosening and tightening.
4 - Washer
^ For cylinder head bolts
^ Install before bearing caps are installed into cylinder head
5 - Valve lifter
^ Do not interchange
^ With hydraulic valve clearance compensation
^ Place on running surface when setting down
^ Before installing, check axial play of camshafts
^ Lubricate contact surfaces
^ Before removing, remove bearing caps from camshaft
6 - Valve keepers
7 - Valve spring plate
8 - Outer valve spring
9 - Inner valve spring
10 - Valve stem seal
11 - Valve guide
12 - Pump-Injector unit
13 - Cylinder head
14 - Oil seal
^ Do not additionally oil or grease sealing lip of sealing ring
^ Before installing, remove oil remains from camshaft journal with a clean cloth
^ To install, tape over groove on stem of camshaft with commercially available adhesive strip (e.g. cellophane tape)
15 - Valves
^ Valve dimensions
16 - Bearing shell
^ Do not interchange used bearings (mark)
^ Make sure retaining tabs are correctly positioned in bearing caps and cylinder head
17 - Camshaft
^ Checking axial play
^ Checking radial clearance with Plastigage, Wear limit: 0.11 mm
^ Run-out: max. 0.01 mm
18 - Bearing cap
^ When installing, seal separating surfaces of bearing caps 1 and 5 with AMV 174 004 01
19 - 8 Nm plus an additional 1/4 turn (90°)
^ Replace
Checking camshaft axial play
Special tools, testers and auxiliary items required
^ Dial gauge holder VW 387
^ Dial gauge
Measure with valve lifters removed and with first, third and last bearing cap installed.
Wear limit: max. 0.15 mm
Sealing separating surfaces of bearing caps 1 and 5 with sealant AMV 174 004 01
Apply sealant AMV 174 004 01 thinly and evenly onto surfaces - 1 -.
Note: Make sure that no sealant enters the grooves - arrows -.
Valve dimensions
Note: Valves must not be reworked. Only lapping is permitted.
