Coolant Thermostat

Special tools and workshop equipment required 

• Adapter V.A.G 1274/8
• Drip Tray for VAS 6100 VAS 6208
• Hose Clip Pliers VAS 6362
• Cooling System Charge Unit VAS 6096
• Refractometer T10007

Removing 

-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

-- Remove the engine cover with air filter. Refer to ENGINE COVER WITH AIR FILTER .

-- Remove the intake manifold. Refer to INTAKE MANIFOLD .

-- Reinsert the oil dipstick guide tube in the cylinder block. Tighten the bolt to prevent coolant from leaking into the engine.

-- Place a suitable container under the coolant thermostat housing to catch any coolant leaking out.

-- Remove the bolts -arrows-, he cover -A- and the thermostat.

Fig 1: Removing Bolts, Disconnecting Connection And Removing Coolant Regulator

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Installing 

Install in reverse order of removal. Note the following:

• Replace the O-ring and seal, see -items 16 and 18- in Part 1 of the COOLANT PUMP AND THERMOSTAT OVERVIEW .
• Note the installed position of the thermostat -1-.The valve -2- must point upward.
  Fig 2: Identifying Coolant Regulator & Valve

  Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
• Fill the coolant. Refer to COOLANT, DRAINING AND FILLING .

Tightening Specifications