Skoda Workshop Service and Repair Manuals

Valve gear - Summary of components   Note t  Cylinder heads with cracks between the valve seats may continue to be used without any reduction in the life time provided the cracks are slight and max. 0.5 mm wide. t  All bearing points and friction surfaces must be greased before commencing installation work.

1 -	20 Nm + torque a further 90° (1/4 turn)

q

replace

q	pay attention to sequence for loosening and tightening → Chapter

2 -	Valve-lever shaft

q	do not interchange

3 -	Cylinder head bolt

q

replace

q	pay attention to sequence for loosening and tightening → Chapter

q	before fitting insert washers (Pos. 4) in the cylinder head

4 -

Washer

q	for cylinder head screws

q	insert in cylinder block before fitting the bearing cap

5 -	Bucket tappets

q	do not interchange

q	with hydraulic valve clearance compensation

q	lay aside with contact surface facing down

q	before installing check axial play of the camshaft → Fig.

q	oil contact surfaces

q	before removing remove the camshaft bearing shells

6 -	Valve collets

7 -	Valve spring retainer

8 -	Valve spring outside

q	removing and installing:

t	Cylinder head removed: with -MP 1-206 (3047 A)-, -MP 1-211 (VW 541/1a,/5)-, -MP 1-213 (2036/1)-

t	Cylinder head fitted → Chapter

9 -	Valve spring inside

q	removing and installing:

t	Cylinder head removed: with -MP 1-206 (3047 A)-, -MP 1-211 (VW 541/1a,/5)-, -MP 1-213 (2036/1)-

t	Cylinder head fitted → Chapter

10 -	Valve stem seal

q	replace → Chapter

11 -	Valve guide

q	check → Chapter

12 -	The unit injector

q	removing and installing → Chapter

13 -	Cylinder head

q	pay attention to note → Chapter

q	reworking valve seats → Chapter

14 -	Sealing ring

q	Neither oil nor grease sealing lip of sealing ring

q	before installing, remove with a clean cloth oil residues from camshaft studs

q	before fitting, cover slot on the camshaft cone with adhesive tape (e.g. Scotch tape)

q	removing and installing → Chapter

15 -

Valves

q	Valve dimensions → Fig.

16 -	Bearing shell

q	do not mix up used bearing shells (mark)

q	ensure the retaining lugs are correctly located in the bearing caps and in the cylinder head

17 -

Camshaft

q	Inspecting axial play → Fig.

q	removing and installing → Chapter

q	Slack: max. 0.01 mm

q	Identification, timing → Fig.

18 -	Bearing caps

q	Mounting sequence → Chapter

q	Bearing cap 4 is identified like bearing cap 5.

q	for installing seal the separator surfaces of bearing caps 1 and 4 with sealant -AMV 174 004 01- → Fig.

19 -	8 Nm + torque a further 90° (1/4 turn)

q

replace

Checking the axial play of the camshaft Special tools and workshop equipment required t  Universal dial gauge holder -MP 3-447 (VW 387)- t  Dial gauge Perform measurement with removed bucket tappets and installed bearing caps. Wear limit: max. 0.15 mm

Seal contact surface of bearing caps 1 and 4 with sealant -AMV 174 004 01- Apply a thin layer of sealant -AMV 174 004 01- evenly to the sealing surfaces -1-.   Note t  Make sure no sealant penetrates into the slots -arrows-. t  Bearing cap 4 is identified like bearing cap 5.

Valve dimensions   Note Valves must not be reworked. Only grinding in is permissible.

Dimension		Inlet valve	Exhaust valve
Ø a	mm	35,95	31,45
Ø b	mm	6,980	6,956
c	mm	89,95	89,95
α	∠°	45	45

Camshaft identification, timing t  Base circle of the cam: a = Ø 52,8 mm t  Camshaft identified with digits and characters stamped in on the end face of the cam for outlet valve on 3rd cylinder.

3. Cylinder -arrow-

858 C