LEMON Manuals: Even more car manuals for everyone
Home >> Mercedes Benz >> 2012 >> G550 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC Basic Knowledge -- G-Class (463) - 2 Of 2 >> Basic Knowledge >> Recirculation pump, location/task - GF83.70-P-4003A

Recirculation pump, location/task - GF83.70-P-4003A

MODELS 129 as of 1.6.97 with CODE (228) Stationary heater 

MODELS 203 up to 23.4.04, models 210, 215, 220, 230 with CODE (228) Stationary heater 

MODELS 463 as of 1.6.94 with CODE (H12) Auxiliary heater Webasto Tele Thermo Top S 

MODELS 209.3 up to 31.5.04 with CODE (228) Stationary heater 

Models 129, 203, 209.3, 215, 220, 230 

Fig 1: Identifying Recirculation Pump Components
G07740647Courtesy of MERCEDES-BENZ USA
  Circulation pump, location The circulation pump (A6m1) is secured to the combustion air housing (2) of the STH heater unit (A6) or the STH or HB heater unit (A6) with a retaining bracket (1) and connected directly to the coolant inlet via a coolant hose (3).  
Model 210 with code (228) Stationary heater Model 463 as of 01.06.94 with code (H12) Webasto Tele Thermo Top S auxiliary heater GF83.70-P-4003-01A 
  Circulation pump, task The circulation pump (A6m1) ensures an independent, constant and rapid supply of coolant throughout all heater operation.