Volkswagen Workshop Service and Repair Manuals > Golf Mk6 > Power unit | 4-cylinder diesel engine (2.0 l engine, common rail) | Engine cooling | Coolant pump, regulation of cooling system

Removing and installing thermostat

Special tools and workshop equipment required

t	10 mm jointed spanner -3185-

t	Refractometer -T10007-

t	Allen key, long reach -T10058-

t	Torque wrench -V.A.G 1331/-

t	Drip tray for workshop hoist -VAS 6208-

t	Hose clip pliers -VAS 6340-

Removing

Note

Renew gaskets and seals.

–	Drain coolant → Chapter.

–	Remove throttle valve module -J338- → Chapter.

–	Pull coolant hose off connection.

–	Loosen securing bolts -4- of connection -3- using T-bar and socket 10 mm -3185- and remove using Allen key, long reach -T10058- and remove connection -3- together with thermostat -1-.

–	Turn thermostat -1- 90° anticlockwise and remove from connection -3-.

Installing

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

–	Moisten new O-ring -2- with coolant.

–	Insert thermostat -1- in connection -3- and turn 90° clockwise.

Note

The brace on the thermostat must be almost vertical.

–	Fit connection -3- with thermostat -1- into cylinder block.

–	Tighten securing bolts -4- using T-bar and 10 mm socket -3185-. Specified torque: 15 Nm

–	Replenish coolant → Chapter.

Volkswagen Workshop Service and Repair Manuals