Combustion air blower, location/task - GF83.70-P-4004A

MODELS 168 with ENGINE 668.940 with heater booster

MODELS 202 with ENGINE 611.960 with heater booster

MODELS 210 with heater booster

MODELS 220 with ENGINE 613.960 with heater booster

MODELS 220 with ENGINE 628.960 with heater booster

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, 168, 202, 203, 209.3, 215, 220, 230

Fig 1: Identifying Combustion Air Housing, Fuel Inlet, Burner Housing And Combustion Air Blower

Courtesy of MERCEDES-BENZ USA

Combustion air blower location	The combustion air blower (A6m2) is a constituent of the STH heater unit (models 129, 203, 209.3, 215, 230) or the STH or HB heater unit (models 168, 202, 220). Together with the combustion air housing (1), it forms an inseparable unit.
Combustion air blower location	Model 210 up to 31.08.96 with engine 602.982 with heater booster 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-4004-01A
Combustion air blower task	To provide a constant supply of combustion air for consistent fuel/air mixture formation during heater operation and rapid cooling of the STH heater unit or the STH or HB heater unit, and for combustion chamber purging during heater unit power-down.