Jetta GLS L4-1.9L DSL Turbo (ALH) (2001)
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Remove coolant hose from connection -2-.
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Remove bolts -1- of connection -2- and remove connection -2- along with thermostat -4-.
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Turn thermostat -4- 1/4 turn (90) to left and remove from connection -2-.
Installing
Install in the reverse order of removal but note the following:
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Moisten new O-ring -3- with coolant.
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Insert thermostat -4- in connection -2- and turn 1/4 turn (90°) to right.
Note: The brace on the thermostat must be almost vertical.
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Install thermostat -4- into engine block.
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Tighten bolt -1-. Tightening torque: 15 Nm (11 ft. lbs.).
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Fill engine with coolant.