1.4 TSI engine (EA111) · Cooling · Coolant pump, regulation of cooling system

Removing and installing coolant pump (Polo, Touran, Golf Plus, Eos, Tiguan, Scirocco, Golf, Golf Cabriolet)

Special tools and workshop equipment required

  • Refractometer - T10007 A-
  • Hose clamp pliers - VAS 6340-
  • Coolant system charge unit - VAS 6096-
  • Torque wrench - V.A.G 1331- (not illustrated)
  • 16 mm open-end spanner - T10241- (not shown)
  • Bit - T10451- (not shown)

Removing

  • Separate fuel supply line -1- and line to activated charcoal filter -2-. Press release tabs to do this.
  • Pull off hose -1- from pressure pipe.
  • Unscrew securing bolts -2- from pressure pipe and remove pressure pipe.
  • Unscrew hose clip -1- on charge air pipe.
  • Open hose clip -2- and pull out hose.
  • Unscrew securing bolt for charge air pipe -3-.

Polo

Continued for all vehicles

  • Remove bracket -4-.
  • To do so, remove bolts -arrows-.
  • Remove bracket -1-.
  • Unscrew bolts -arrows- and remove charge pressure sender - G31- -1-.

Removing poly V-belt (Tiguan).

Remove poly V-belt (Golf Plus, Eos, Scirocco, Golf, Touran, Polo, Golf Cabriolet) ⇒ 1.3 Removing and installing poly V-belt (Golf Plus, Eos, Scirocco, Golf, Touran, Polo, Sharan, Passat, Passat CC, Golf Cabriolet).

  • Push securing clip at charge air cooler in direction of -arrowand pull hose -arrow- off.
  • Remove securing bolt -arrow- for charge air pipe -1-.
  • Unscrew securing bolt for charge air pipe -arrow- and remove charge air pipe -1- downwards.

Only vehicles with auxiliary heater

  • Remove coolant hoses for auxiliary heater.

Continued for all vehicles

  • Carefully press locking lugs on noise insulation housing for supercharger -arrows- outwards.
  • Pull off front housing with noise insulation.
  • Remove charge air pipe downwards.

Tiguan with four-wheel drive

  • Remove front exhaust pipe.
  • Release tension from supercharger poly V-belt by swinging tensioning element using open-end spanner, 16 mm - T10241-.
  • Lock tensioning element using locking pin - T10060 A-.
  • Unscrew securing bolts -arrows- for tensioning element and remove tensioning element.
  • Hold supercharger shaft with 16 mm spanner -1-.
  • Remove securing bolt -2- for pulley and remove pulley and supercharger poly V-belt -3-.
  • Loosen bolts for coolant pump with magnetic clutch for supercharger - N421- -arrows- with the bit - T10451-.
  • Remove coolant pump with magnetic clutch for supercharger - N421- from cylinder block.

Installing

Installation is carried out in the reverse order. When installing, note the following:

  • Insert coolant pump with magnetic clutch for supercharger - N421- into cylinder block.
  • Tighten securing bolts to 8 Nm.
  • Place poly v-belt on the magnetic clutch for supercharger - N421-.
  • Bolt on supercharger pulley with poly-v-belt and new securing bolt.

Specified torques:

Assembly overview - part I, belt drive ⇒ 1.1 Assembly overview - poly V-belt drive.

Assembly overview - supercharger ⇒ 2.1 Assembly overview - supercharger

Assembly overview - charge air system (Golf Plus, Eos, Scirocco, Golf, Touran, Tiguan, Golf Cabriolet)

Assembly overview - charge air system (Polo) ⇒ 3.2 Assembly overview - charge air system (Polo)

Install poly V-belt (Tiguan).

Install poly V-belt (Golf Plus, Eos, Scirocco, Golf, Golf Cabriolet, Touran, Polo) ⇒ 1.3 Removing and installing poly V-belt (Golf Plus, Eos, Scirocco, Golf, Touran, Polo, Sharan, Passat, Passat CC, Golf Cabriolet)

Draining and filling with coolant (Golf Plus, Eos, Scirocco, Golf, Golf Cabriolet, Touran, Tiguan)

Draining and filling with coolant (Polo) ⇒ 1.6 Draining and filling coolant (Polo)