Engine cooling, OM617 Illustrated table thermostat layout 20-490 Illustrated table thermostat layout 1202-8431 40 Temperature switch 100 °C (model 116, engine 617.950 only) 41 Sealing ring 42 Combination screw (3 each) 43 Cap coolant thermostat housing 44 Sealing ring 45 Coolant thermostat 46 Hex. screw (2 each) 47 Spring plate (2 each) 48 Coolant thermostat housing 49 Gasket 57 Coolant hose 58 Hose clamp 20.8-490/1 F 2 Poprzedni Checking of expansion tank closing cover Nowsze Removal and installation of coolant pump