SEAT Workshop Service and Repair Manuals

Note:

Cylinder heads which have cracks between the valve seats or between valve seat inserts and the spark plug thread can be used further without reducing service life, provided the cracks do not exceed a maximum of 0.5 mm in width.

• 5 Nm + 1/8 turn (45 °) further
• Exhaust camshaft bearing cap
• ◆ Installation position => Fig. 2
• ◆ Installation sequence
  => Page15-65, removing and installing camshafts

• Seal
• ◆ If seal is leaking, renew complete
• ◆ When installing control housing, lightly lubricate contact surfaces of seal
• ◆ When replacing seals, do not spread too widely
• Exhaust camshaft
• ◆ Checking radial clearance with plastigage
      Wear limit: 0.1 mm
• ◆ Run-out: max. 0.01 mm
• ◆ Checking axial clearance => Fig. 1
• ◆ Identification and valve timing
  , Fig. 4
• ◆ Removing and installing
  => Page 15-65

• Control housing
• ◆ Lightly lubricate contact surfaces of oil seals before installing
• ◆ Dismantling and assembling => Fig. 5
• ◆ Before installing strainer, check for dirt => Fig.6.
• ◆ Removing and installing
  => Page 15-65, Removing and installing camshafts
• Camshaft roller chain
• ◆ Mark D.O.R. before removing (installation position)
  => Page 13-9 Fig. 1
• ◆ Installing => Page 15-36, Adjusting valve timing

• Exhaust camshaft adjuster
• ◆ Identification: 32A
• ◆ Rotate engine only when camshaft adjuster is installed
• ◆ Installing => Page 15-36, Adjusting valve timing
• ◆ Check camshaft adjustment => Page 15-77
• 60 Nm + 1/4 turn (90 °) further
• ◆ Renew
• ◆ Contact surface of sender wheel must be dry around bolt head when assembled
• ◆ To remove and install, counter-hold with 32 mm open jaw spanner on camshaft
  => Page 15-65, Removing and installing camshafts

• Inlet camshaft adjuster
• ◆ Identification: 24E
• ◆ Rotate engine only when camshaft adjuster is installed
• ◆ Installing => Page 15-36, Adjusting valve timing
• ◆ Check camshaft adjustment => Page 15-77
• Cylinder head height
• ◆ Minimum height: a = 139.9 mm
• Valves
• ◆ Do not rework only grinding-in is permitted
• ◆ Valve dimensions => Fig. 3
• Cylinder head
• ◆ Check for distortion => Fig. 1
• ◆ See note
  => Page 15-49
• ◆ Removing and installing
  => Page 15-22
• ◆ Reworking valve seats
  => Page 15-61
• ◆ If replaced renew the complete
  coolant

• Support element
• ◆ Before installing check camshaft axial clearance => Fig. 1
• ◆ Do not interchange
• ◆ With hydraulic valve clearance compensation
• Valve stem seal
• ◆ Renewing=> Page 15-90
• Retaining clip
• ◆ Check seated securely
• Roller rocker finger
• ◆ Before installing check camshaft axial clearance => Fig. 1
• ◆ Do not interchange
• ◆ Check roller for easy movement
• ◆ Oil contact surface
• ◆ Use securing clip to clip onto support element when installing

• Valve spring
• ◆ Note fitting position
• ◆ Removing and installing
  => Page 15-90, Renewing valve stem seals
• Valve spring plate
• Valve cotters
• Inlet camshaft bearing cap
• ◆ Installation position => Fig. 2
• ◆ Installation sequence
  => Page15-65, removing and installing camshafts
• Inlet camshaft
• ◆ Checking radial clearance with plastigage
      Wear limit: 0.1 mm
• ◆ Run-out: max. 0.01 mm
• ◆ Checking axial clearance => Fig. 1
• ◆ Identification and valve timing
  => Page 15-59, Fig. 4
• ◆ Removing and installing
  => Page 15-65

→ Fig. 1    Camshafts, checking axial clearance

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

• ◆ VW 387 Universal dial gauge bracket
• ◆ Dial gauge

Test sequence

Perform measurements with support elements and roller rocker fingers removed.

Middle bearing cap fitted on respective camshaft.

Wear limit: max. 0.10 mm

→ Fig. 2    Fitting position of camshaft bearing caps

Points of bearing caps -arrow A- of inlet and exhaust camshaft bearing caps face outwards.

Identification on bearing caps is legible when seen from inlet side.

→ Fig. 3    Valve dimensions

Note:

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

Valve dimensions for inlet valves

Valve dimensions for exhaust valves

→ Fig.4    Camshaft identification, valve timing

Camshaft identification

Identification between No. 4 Cyl and No. 5 Cyl. cam pair of respective camshaft.

Valve timing at 1 mm valve lift

→ Fig.5    Dismantling and assembling control housing

•     1 -    Guide rail: clipped onto control housing
•     2 -    Control housing
•     3 -    Camshaft adjustment valve -1-, inlet (N205)
•     4 -    Exhaust camshaft control valve -2- (N318)
•     5 -    8 Nm

→ Fig.6    Removing and installing control housing strainer

• ‒ Unclip strainer -2- from back of control housing -1- and remove any dirt which may be there.