Figure 137. Coolant pump: 1 - drive (poly-V-shaped) belt; 2 — pulley mounting bolt; 3 - pulley; 4 — pump mounting bolt; 5 — pump; 6 - mounting sleeve; 7 - gasket; 8 — shock absorber; 9 - tension lever; 10 — spring
The pump, the body of which is made of aluminum alloy, is located in the lower front part of the cylinder block. The thermostat is located in the same housing as the pump. When removing the pump, you need to follow the drawing 137.
(Information copied from the website: www.MercedesMan.ru)