mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Thermostat Housing, Engine Cooling|Specifications|Page 2167 > < Thermostat Housing, Engine Cooling|Specifications
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Thermostat Housing: Service and Repair

Removing And Installing Engine Coolant Thermostat Housing

1

Remove viscous fan clutch (1)
-

Engines with viscous fan clutch

NOTE:  Left-handed thread

2

Drain coolant
-

at radiator

3

Remove cover (16)

4

Disconnect coolant hoses (2, 3 and 4)
-

Check condition of coolant hoses and hose clamps and replace if necessary.

5

Disconnect electrical connectors and vacuum pipes on temperature sensor in coolant thermostat housing (30)

6

Unscrew suspension lug (6)

7

Unscrew coolant thermostat housing (30)
-

Unscrew bolts (7, 8 and 9).

NOTE:  Installation:
-

Clean sealing surfaces and replace O-ring (31).

-

If the coolant thermostat housing (30) is replaced, observe location of temperature sensor.

8

Install in reverse order

9

Check cooling system for leaks.

Thermostat Housing, Engine Cooling|Specifications|Page 2167 > < Thermostat Housing, Engine Cooling|Specifications