SEAT Workshop Service and Repair Manuals

Checking compressions

Notes:

• ◆ When installing an exchange cylinder head with fitted camshaft, the contact surfaces between bucket tappet and cam must be oiled after installation.
• ◆ The plastic protectors fitted to protect the open valves must only be removed immediately before fitting the cylinder head.
• ◆ When replacing the cylinder head the complete coolant must be renewed.

• 55 Nm
• 20 Nm

• Engine support bracket
• 45 Nm
• Camshaft sprocket
• ◆ Drive off camshaft taper using hammer and drift through toothed belt guard openings
• 10 Nm
• Rear toothed belt guard
• Cylinder head cover
• Cap
• ◆ Renew seal if damaged
• Upper sealing washer
• ◆ Renew if damaged
• Dished washer
• Cap

• To intake hose
• Retaining clip
• Pressure regulating valve
• ◆ For crankcase breather
• Gasket
• ◆ Renew if damaged
• Cylinder head cover gasket
• ◆ Renew if damaged
• ◆ Insert projections into holes on cylinder head
• Crankcase breather
• Cylinder head bolt
• ◆ Renew
• ◆ Note sequence when loosening and tightening
  => Page 15-7, removing and installing cylinder head
• Lower sealing cone

• Injector pipes
• ◆ Tighten to 25 Nm
• ◆ Remove with 3035
• ◆ Always remove pipework complete
• ◆ Do not alter shape
• Cylinder head
• ◆ Check for distortion => Fig. 1
• ◆ Removing and installing
  => Page 15-7
• ◆ If replaced renew the complete
  coolant
• Injector
• ◆ Removing and installing:

=> Repair group 23; Diesel direct system; Servicing injectors

• Glow plug
• ◆ Tighten to 15 Nm
• ◆ Checking

=> Repair group 28; Checking glow plug system; Checking glow plugs

• Lifting eye
• Cylinder head gasket
• ◆ Renew
• ◆ Note marking
  =>Fig. 2
• ◆ If replaced renew the complete
  coolant
• Idler roller
• 25 Nm
• Tensioning roller
• Eccentric
• Toothed belt
• ◆ Mark D.O.R. before removing
• ◆ Check for wear
• ◆ Do not kink
• ◆ Removing, installing and tensioning
  => Page 13-17
• Toothed belt guard - upper part

→ Fig. 1    Checking cylinder head for distortion

Max. permissible distortion: 0.1 mm

Note:

Reworking diesel cylinder heads is not permissible.

→ Fig.2    Cylinder head gasket identification

• ◆ Part No. = black arrow
• ◆ Holes/notches = white arrow

Note:

Different thicknesses of cylinder head gasket are fitted depending on the piston projection. When replacing the cylinder head gasket, install a new gasket with the same identification.