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Thermostat, Remove and Install
 Remove
Open coolant drain bolt – collect escaping coolant.
Remove coolant hose from thermostat housing.
Remove air cleaner housing with air intake cover – see
illustration "Air Ducts (X 16 SZR)" and illustration "Air Ducts (Z
16 SE)".
Remove upper part of toothed belt cover – see operation
"Toothed Belt Cover – Upper Part, Remove and Install".
Remove ribbed V-belts – see operation "Ribbed V-belts,
Remove and Install".
Remove ribbed V-belt tensioner – see operation "Ribbed
V-belt Tensioner, Remove and Install".
Remove lower part of toothed belt cover – see operation
"Toothed Belt Cover – Lower Part, Remove and Install".
Remove toothed belt – see operation "Toothed Belt, Remove
and Install".
Remove toothed belt tension roller – see operation
"Toothed Belt Tension Roller, Remove and Install".
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Rear toothed belt cover – see operation "Toothed Belt
Cover – Rear, Remove and Install".
Remove thermostat housing (1) from cylinder head. Remove
thermostat (2) from cylinder head.
 Clean
Clean sealing surfaces and remove gasket residues.
Install
Install thermostat (2) into cylinder head with new seal
ring.
Attach thermostat housing to cylinder head – 10 Nm / 7
lbf. ft.
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Install rear toothed belt cover – see operation "Toothed
Belt Cover – Rear, Remove and Install".
Install toothed belt tension roller – see operation
"Toothed Belt Tension Roller, Remove and Install".
Install toothed belt – see operation "Toothed Belt, Remove
and Install".
Install lower part of toothed belt cover – see operation
"Toothed Belt Cover – Lower Part, Remove and Install".
Install ribbed V-belt tensioner – see operation "Ribbed
V-belt Tensioner, Remove and Install".
Install ribbed V-belt – see operation "Ribbed V-belt,
Remove and Install".
Install upper part of toothed belt cover – see operation
"Toothed Belt Cover – Upper Part, Remove and Install".
Install air cleaner housing with air intake cover – see
illustration "Air Ducts (X 16 SZR)" and illustration "Air Ducts (Z
16 SE)".
Attach coolant hose to thermostat housing.
Close coolant drain bolt.
Inspect
Charge cooling system – see operations "Cooling System,
Charge and Bleed" and "Cooling System, Check for Leaks".
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