SEAT Workshop Service and Repair Manuals

Observe safety precautions.

Observe rules for cleanliness => Page 21-2.

Notes:

• ◆ All hose connections are secured with clamps and/or securing clips.
• ◆ VAS 5024 A pliers are recommended when installing spring-type clips.
• ◆ Do not install hose connections with lubricant containing oil.
• ◆ Charge air system must be free of leaks.
• ◆ Before screwing on oil supply pipe fill turbocharger at connection with engine oil.
• ◆ After installing turbocharger run engine for approx. 1 minute at idling speed, do not rev engine. This ensures that the turbocharger is adequately lubricated.
• ◆ Renew self-locking nuts.

Hose connections with connector couplings

Note:

All hose connections of charge air system are secured by spring-type clips or by connector couplings. Always check the following points with connector couplings:

• ‒ → Release connector coupling by pulling the securing clamp -arrow-.

• Separate hose/pipe without auxiliary tools.

• ‒ When assembling ensure that the retaining lugs -A- are engaged securely.

Engine codes 1Z, AHU

Engine codes AFN, AVG

Turbocharger hose connections, engine codes 1Z, AHU => Page 21-15

Turbocharger hose connections, engine codes AFN, AVG => Page 21-16

Engine codes 1Z, AHU

• Exhaust manifold
• 35 Nm
• ◆ Renew
• ◆ Coat threads and bolt head seating surface with G000500
• From exhaust gas recirculation valve
• From charge air cooler
• Intake manifold
• Gasket
• ◆ Renew
• ◆ Coating (beading) towards intake manifold
• 25 Nm
• Gasket
• ◆ Renew
• ◆ Note installation position
• 20 Nm

• 10 Nm
• ◆ Install with D6
• Circlip
• Pressure unit
• ◆ For charge pressure regulating valve
• ◆ Checking
• ◆ Removing and installing
  => Page 21-29
• Hose
• ◆ Blue
• ◆ To charge pressure control solenoid valve (N75) => Page 21-15, turbocharger hose connections
• Seal
• ◆ Renew
• Banjo bolt, 15 Nm
• From air cleaner

• O-ring
• ◆ Renew if damaged
• 10 Nm
• Banjo bolt, 30 Nm
• Oil return pipe
• ◆ To cylinder block
• 30 Nm
• Gasket
• ◆ Renew
• Retainer
• Hose
• ◆ rot
• ◆ To charge pressure control solenoid valve (N75) => Page 21-15, turbocharger hose connections

• Turbocharger
• ◆ Removing and installing
  => Page 21-18
• ◆ Checking boost pressure
  => Page 21-23
• To charge air cooler
• Front exhaust pipe
• Oil supply pipe
• ◆ From oil filter bracket
  => Page 17-3, item 5
• ◆ Fill connection with engine oil before screwing on oil supply pipe.
• ◆ Counterhold connecting pipe item 2 when tightening
• ◆ Removing and installing
• Heat shield

Engine codes AFN, AVG

• From exhaust gas recirculation valve
• From charge air cooler
• Intake manifold
• Gasket
• ◆ Renew
• ◆ Coating (beading) towards intake manifold
• 25 Nm
• Gasket
• ◆ Note installation position
• Exhaust manifold
• Bracket
• ◆ For heat shield item 9

• Heat shield
• ◆ Engage in bracket item 8
• From air cleaner
• 10 Nm
• O-ring
• ◆ Renew if damaged
• Seal
• ◆ Renew
• Banjo bolt, 30 Nm
• Oil return pipe
• ◆ To cylinder block
• 30 Nm
• Gasket
• ◆ Renew
• Retainer

• Hose
• ◆ To charge pressure control solenoid valve (N75) => Page 21-15, turbocharger hose connections
• Pressure unit
• ◆ For charge pressure control
• ◆ Integral part of turbocharger cannot be replaced
• To charge air cooler
• Turbocharger
• ◆ Removing and installing
  => Page 21-18
• ◆ Checking charge pressure

=> Repair group 23; Servicing diesel direct injection system; Checking charge pressure system

• Gasket
• ◆ Renew

• Front exhaust pipe
• Oil supply pipe, 25 Nm
• ◆ From oil filter bracket
  => Page 17-3, item 9
• ◆ Fill connection with engine oil before screwing on oil supply pipe.
• ◆ Counterhold connectingpipe item 2 when tightening
• ◆ Removing and installing
• 25 Nm
• ◆ Renew
• ◆ Coat threads and bolt head seating surface with G 000 500
• Connection, 30 Nm
• ◆ Renew
• ◆ Coat threads and bolt head seating surface with "G 052 112 A3"
• ◆ Fill connection with engine oil before screwing on oil supply pipe.