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| Loosen securing bolts -4- using T-bar and socket, 10 mm -VAS 3185- and unscrew with Allen key extension, 5 mm -T10058- and remove connection -3-. |
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| Pull thermostat out of cylinder block using pliers. |
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| Moisten new O-ring with coolant. |
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| Insert thermostat -1- with O-ring -2- into cylinder block. |

Note | The thermostat brace must be vertical. |
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| Fit connection -3- and tighten securing bolts -4- using T-bar and socket, 10 mm -VAS 3185-. Specified torque: 15 Nm. |
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| Connect coolant hose onto connection and fill coolant system with coolant → Chapter. |
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