SEAT Workshop Service and Repair Manuals

Assembly diadram

1 -

10 Nm

2 -	6 Nm + 1/4 turn (90°)

3 -	Bearing cap

q	Fitting position and sequence → Chapter, Camshaft: removing and installing

q	Apply a little sealant -AMV 174 004 01- on the contact surface of bearing caps 1 and 5.

4 -

Camshaft

q	Checking axial clearance → Fig.

q	Removing and installing → Chapter

q	Checking radial clearance with Plastigage: Wear limit: 0.1 mm

q	Eccentricity: max. 0.01 mm

q	Identification and valve timing → Fig.

5 -	Hydraulic cam follower

q	Do not interchange

q	With hydraulic valve clearance compensation

q	Checking → Chapter

q	Place with contact surface downwards

q	Before installing check camshaft axial clearance → Fig.

q	Oil sliding surface

6 -	Valve cotters

7 -	Valve spring plate

8 -	Valve spring

q	Removing and installing:

Cylinder head removed: with -T20034/1-

Installed → Chapter, renewing valve stem seals

9 -	Service part - valve guide

q	With collar

10 -	Valve stem seal

q	Renew → Chapter

11 -	Valve guide

q	Checking → Chapter

q	Renew → Chapter

12 -

Oil seal

q	Lightly oil the sealing edge of the oil seal

q	Renew → Chapter

13 -	Cylinder head

q	Rework valve seats → Chapter

q	Rework the sealing surface → Fig.

14 -

Valves

q	Valves must not be reworked. Only lapping-in is permitted.

q	Valve dimensions → Fig.

15 -

20 Nm

16 -	Lifting eye

17 -

Support

q	To guide ignition cables

Reworking cylinder head sealing surface Cylinder head reworking dimension: a = at least 135.6 mm   Note! When the sealing surface is reworked, the valves must be lowered by the same measure (rework the valve seat rings) otherwise the valves could hit the pistons. Check that it does not fall below the minimum acceptable dimension → Chapter.

Camshaft: checking axial clearance Special tools and workshop equipment required t  Bracket -T20020- t  Dial gauge Take measurements with cam followers removed and bearing cap 3 fitted. Wear limit: max. 0.15 mm

Camshaft identification, valve timing Identification

Engine code	AEE/ALM	AEX/APQ
Between the inlet and exhaust, cylinder 1 -arrow-	030 S	032 AM
Circular mark	1	1 and 2

Valve timing at 1 mm valve lift

Engine code	AEE/ALM	AEX/APQ
Inlet opening after TDC	7°	10°
Inlet closing after BDC	32°	27°
Exhaust opening before BDC	32°	27°
Exhaust closing before BDC	9°	10°

Valve dimensions   Note! Valves must not be reworked. Only lapping-in is permitted.

Dim.		Inlet valve	Exhaust valve
Ø a	mm	35,6	29,0
Ø b	mm	6,963	6,943
c	mm	94,8	95,0
α	∠°	45	45