Cooling system - fitting locations

⇒ 1.4.1 Assembly overview - parts of cooling system, body side

⇒ 1.4.2 Parts of cooling system - engine side

1.4.1 Assembly overview - parts of cooling system, body side

• 1 Clip
  • Renew if damaged
• 2 Upper coolant hose
  • Connection diagram for coolant hoses ⇒ 19 – Cooling
• 3 Expansion tank
  • Check cooling system for leaks with cooling system tester - V.A.G 1274- and adapter - V.A.G 1274/8- ⇒ 1.2 Checking cooling system for leaks
• 4 Cap
  • Check using cooling system tester - V.A.G 1274- and adapter for cooling system tester - V.A.G 1274/9-.
  • Test pressure: 1.4 to 1.6 bar
• 5 5 Nm
• 6 Connector
• 7 Coolant hose
• 8 Radiator mounting
• 9 5 Nm
• 10 Clip
  • Renew if damaged
• 11 Radiator/cooler
  • Removing and installing ⇒ 3 Radiator, radiator fan
  • Renew coolant after renewing ⇒ 1.3.1 Draining.
• 12 Cowling with radiator fan - V7-
  • Removing and installing ⇒ 3.2 Assembly overview - with radiator fan - V7-
• 13 Lower coolant hose
• 14 Charge air cooler
  • Can only be removed and installed with radiator ⇒ 3 Radiator, radiator fan.
• 15 Lower mounting
  • black
• 16 Clip
  • Renew if damaged
• 17 Connector
• 18 Radiator fan thermal switch - F18-, 35 Nm
  • For radiator fan.
  • Switching temperatures:

• 1st stage on: 92 … 97 °C, off: 84 … 91 °C
• 2nd stage on: 99 … 105 °C, off: 91 … 98 °C

• 19 Seal

Renew

• 20 Condenser
  • Removing and installing ⇒ Rep. gr. 87

1.4.2 Parts of cooling system - engine side

• 1 Coolant hose
  • From expansion tank
• 2 Coolant hose
  • To expansion tank
• 3 Bolt
  • 8 Nm
• 4 Coolant return line
• 5 Coolant return hose
• 6 4/2-way bypass valve
• 7 Coolant hose
  • From heat exchanger for heater unit
• 8 Coolant hose
  • To heat exchanger for heater unit.
• 9 Bolt
  • 15 Nm
• 10 Bolt
  • 10 Nm
• 11 -G62-
  • Radiator outlet coolant
• 12 O-ring
  • Renew
• 14 Coolant hose connection
• 15 O-ring
  • Renew
• 16 Connection hose
  • Coolant circulation pump
• 17 Coolant circulation pump -V178-
• 18 Bolt
  • 8 Nm
• 19 Spacer
• 20 Bolt
  • 8 Nm
• 21 Washer
• 22 Connection hose
  • Exhaust gas recirculation cooler
• 23 Exhaust gas recirculation cooler
  • Removing and installing ⇒ 3.1 Assembly overview - exhaust gas recirculation
• 24 Coolant lines
  • With bracket for coolant circulation pump.
• 25 Connection hose
  • Exhaust gas recirculation cooler
• 26 -G83-
  • Radiator outlet coolant temperature sender
• 27 Bolt
  • 10 Nm
• 28 Connection hose
  • Coolant lines for exhaust gas recirculation cooler
• 29 Coolant hoses
  • Supply and return/radiator.
• 30 Bolts
  • 15 Nm
• 31 4/2-way valve with thermostat
  • Removing and installing ⇒ 2.1 Assembly overview - coolant pump and 4/2-way valve with thermostat
• 32 O-ring
  • Renew