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Removal and installation of the thermostat - ra20006010110x(0110)

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Engines 601, 602 (except 602.98), 603 

Preceding work:

Coolant drained (Draining, pouring in coolant - anti-freeze protection table ).

Operation no. of operation texts and operation values or standard texts and flat rates; 20-2462

Fig 1: Identifying Thermostat Remove/Install Components
G05437243Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Housing cover (320) unscrew from coolant pump, screw on, bolts (321), 10 Nm. Renew seal (319).
Thermostat (318) check. Pay attention to installation position; the recess on the thermostat must be aligned with the rib in the thermostat housing cover.
 
NOTE: Thermostat and thermostat housing cover are marked with a green dot on turbo engines.

Special tool 

Fig 2: Identifying (011 589 72 21 00 00)
G05437244Courtesy of MERCEDES-BENZ OF NORTH AMERICA.