Water Pump: Service and Repair

Preparation
- Viscous fan clutch carrier removed. Service and Repair
- Harmonic balancer and drive belt removed. Engine

Removal and Installation
- Detach coolant hoses (4), (5) and (6), attach.
- Unbolt connection cover at top (2) with engine lifting eye (1), bolt on
Tighten to: 21 Nm.
- Replace gasket (2a).
- Model 210 With Secondary Air Injection: unbolt retaining plate with switchover valve for secondary air injection at coolant pump (3), bolt on.
- Unbolt coolant pump (3).
- Clean sealing surfaces.
- Replace gasket (3a).





- Install coolant pump (3) on, bolt on.
Tighten to: 21 Nm.
Pay attention to different bolt lengths, see bolt diagram illustration above.
- Check cooling system for leaks. Testing and Inspection

- Tighten the bolts of cover at top to coolant pump to: 21 Nm





CAUTION: Engine 119.97
- The coolant pump must not touch the timing case cover at the bottom (arrows) otherwise the attaching hose and the gasket may not be aligned and the top attaching eye may shear off.
- Check position of coolant pump and grind off coolant pump housing, if necessary, in the area of the arrows by about 1 mm.