AIRmatic central reservoir charge valve, component description - GF32.31-P-5111GZ

MODEL 164.1 /8 with CODE (489) Airmatic (air suspension with level adjustment and adaptive damping system ADS)

MODEL 164.8

with CODE (489) AIRmatic (air suspension with level adjustment without ADS adaptive damping system)

with CODE (494) USA version

Shown on model 164.1

Fig 1: Identifying Airmatic Central Reservoir Charge Valve, Components (Shown On Model 164.1)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

The AIRmatic central reservoir charge valve is located in the AIRmatic valve unit on a bracket behind the right bumper.

Body

The AIRmatic valve unit contains the following valves:

Left front level control valve (Y36y1)
Right front level control valve (Y36y2)
Left rear level control valve (Y36y3)
Right rear level valve (Y36y4)
AIRmatic central reservoir charge valve

Task

The AIRmatic central reservoir charge valve is required for charging of the AIRmatic central reservoir by the AIRmatic compressor unit (A9/1).

Function

If the AIRmatic control unit (N51) registers inadequate pressure in the central reservoir via the AIRmatic pressure sensor (Y36b1), the AIRmatic compressor unit and the AIRmatic central reservoir charge valve are switched on. The generated compressed air is then supplied to the central reservoir until the cutoff pressure is reached, then the AIRmatic compressor unit and AIRmatic central reservoir charge valve are switched off. The function is active as from a velocity of v > 40 km/h (starting from a low speed) or up to a velocity of v > 20 km/h (starting at a high speed). If the supply of compressed air is to be used for raising the vehicle, then the AIRmatic central reservoir charge valve and the corresponding Level valve are opened. Now the compressed air can escape into the corresponding bellows.