mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Water Pump > < Thermostat, Engine Cooling|Specifications
Page 1
background image

Thermostat: Service and Repair

Thermostat Housing

KEY TO IMAGE

A To crankcase
B From cylinder head
C To radiator (top)
D From radiator (bottom)
E

From heater

12

Screw

11

Top section of coolant thermostat housing

10

0-ring

15

Main valve

14

Bypass valve

8

Coolant thermostat

9

Ball valve

REMOVAL

1. Drain coolant at radiator.
2. Unscrew bolts (12), tightening torque 6 Nm (4.5 ft lbs).
3. Place top section of coolant thermostat housing (11) with connected hose to the side.
4. Remove coolant thermostat (8).

INSTALLATION

-

Renew 0-ring (10).

-

Install coolant thermostat (8) so that the ball valve (9) is at the highest point.

-

Install in the reverse order.

Water Pump > < Thermostat, Engine Cooling|Specifications