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Removing and installing thermostat

Petrol models

Details setting of the thermostat assembly on petrol engines

1 - thermostat housing 2 - Seal 3 - Fixing screws	4 - Clip 5 - Hose cooling path 6 - Radiator

PERFORMANCE ORDER

Drain the cooling system (see chap. Current care and maintenance). Remove the trim panel of the power unit / air cleaner assembly. Disconnect the hose of the cooling path (5). Remove the mounting bolts (3) and remove the cover of the thermostat (1) complete with a work item. To avoid irreversible damage to the operating element should not be removed from the cover - if necessary, replacement of the element in the collection is made with the latest! Installation is in the reverse order. Do not forget to replace the O-ring (2), make sure that the fixture has been tightened with demanded effort. Finally, check the cooling system for signs of leaks.

Diesel models

M612

Details setting of the thermostat and the coolant temperature sensor on the diesel engine series 612

1 - Hose cooling path 2 - The vent hose 3 - thermostat housing	4 - Connection nipple B11 / 4 - Coolant temperature

PERFORMANCE ORDER

Remove protection crankcase. Drain the cooling system (see chap. Current care and maintenance). Remove the trim panel of the cylinder head cover. Disconnect the electrical wiring from the coolant temperature sensor (B11 / 4). Disconnect from the thermostat housing (3) of the cooling line (1) and ventilation (2) paths, - check the condition of fixing collars, if necessary, prepare a replacement. Remove the cover of the thermostat (3), - note the installation position of the connecting fitting (4), make a new gasket. Installation is in the reverse order. Finally, check the cooling system for signs of leaks.

M628

Details of the thermostat on the diesel engine series 628

1 - Hose cooling path (ventilation) 2 vent line 3 - Fuel filter 4 - Upper duct 5 - Hose cooling path 6 - thermostat housing 6a - Seal 7 - Hose cooling path 7a - connecting nipple on the cover of the oil filter	8 - line cooling path 8a - connecting nipple on the crankcase 8b - connecting nipple on the cover of the oil filter 9 - Hose cooling path 10 - Support bracket cooler air pressurization 10a - Bolts 11 - Hose cooling path 12 - Cooler air pressurization

PERFORMANCE ORDER

Poddomkratte car and establish it on props. Drain the cooling system (see chap. Current care and maintenance). Remove the air cleaner. Remove the cover of the cooling fan (see. Section Removal and installation of the cooling fan assembly). Set the screen to protect the radiator / condenser air conditioning system (equipped with a suitable support bracket metal or plastic plate of 400x680x1 mm). Remove the fuel filter (3) (see chap. Current leaving and service) - When the filter is wise to replace. Disconnect the vent line (2) Hose cooling path (1), - check the condition of the fastening clamp, if necessary, prepare a replacement. Disconnect the hose of the cooling path (11) of the supercharging air cooler (12) - check the condition of the fastening clamp, if necessary, prepare a replacement. Remove the actuator the throttle actuator assembly with the upper duct (4). Disconnect from the thermostat housing (6) Hose cooling path (5), - check the condition of the fastening clamp, if necessary, prepare a replacement. Disconnect the hose of the cooling path (7) of the nozzle (7a) of the control valve crankcase ventilation system - check the condition of the fastening clamp, if necessary, prepare a replacement. Disconnect from the nozzles (8a, 8b) and the hose (9), remove the line of the cooling path (8). Remove the support bracket (10) Cooler boost - to provide access to the cap screws (10a) to pry the screwdriver (arrow) and push aside the hose (9). Remove the cover of the thermostat (6), complete with a working element. Installation is in the reverse order. Finally, check the cooling system for signs of leaks.