Coolant thermostat, removing and installing

Fig 1: Special Tools - Coolant Pump, Removing And Installing

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Special tools, testers and auxiliary items required

• Refractometer T10007
• Drip Tray V.A.G 1306 or Drip Tray for VAS 6100 VAS 6208
• Torque wrench V.A.G 1331
• Spring-type clip pliers VAS 5024A

Removing 

• Drain coolant, refer to Cooling system, draining and filling  .

Fig 2: Identifying Thermostat & Fasteners

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Disconnect coolant hose from connecting piece - 3  -.
• Remove bolts - 4  - from connecting piece - 3  - and remove connecting piece - 3  - with thermostat - 1  -.

Installing 

Installation is in reverse order of removal, note the following:

• Moisten new O-ring - 2  - with coolant.
• Insert thermostat in - 1  - connecting piece - 3  - and turn ¹ / ₄ (90 ° ) to right.
• Insert connection - 3  - with thermostat - 1  - into engine block.

Fig 3: Identifying Thermostat & Fasteners

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Tighten mounting bolts - 4  -. Torque specification: 15 Nm

Fill with new coolant, refer to Cooling system, draining and filling  .