Fill up and vent the Active Body Control (ABC) system - AR32.50-P-0021N: Notes

MODEL 215 

MODEL 220 with CODE (487) Active Body Control (ABC) except CODE (979) Special protection version 

MODEL 230 with CODE (487) Active Body Control (ABC) except CODE (807) Model year 2007 

Shown on model 215 

Fig 1: Filling Active-Body-Control (ABC) System

	Charging
	Risk of injury  to skin or eyes caused by hydraulic fluid spraying out under high pressure. Risk of poisoning  caused by swallowing hydraulic fluid.	Depressurize the hydraulic system completely before starting any work on the system. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
	Notes on active body control suspension		AH32.50-P-0001-01N
1	Fill the ABC system reservoir (2) with hydraulic fluid	Funnel with filter (060) must not be used with other operating fluids. To help prevent contaminants from entering and damaging the ABC system, always store the funnel with filter (060) in a lockable cabinet. The vehicle must be ready to drive and standing horizontally on its wheels.
		Funnel	Fig 2
			*BF32.50-P-1001-01A
2	Insert dipstick (2a) all the way into the expansion reservoir (2), pull out again, read off fluid level and correct if necessary	Read off the fluid level on the dipstick on the side with the inscription "ENGINE OFF UNLADEN". The fluid level must be between the "MIN" and "MAX" marks.
3	Start engine	The fluid level in the expansion reservoir (2) must be observed throughout the entire filling process (2nd person required). Never allow the level of the fluid within the reservoir (2) to fall below the MIN graduation. The tandem pump (1) must NOT draw in any air, otherwise it can be damaged due to the lack of lubrication.
4	Press the vehicle level adjustment button repeatedly until both indicator lamps in the button go out	Vehicle level "Normal".
5	Insert dipstick (2a) all the way into the expansion reservoir (2), pull out again, read off fluid level and correct if necessary	Read off the fluid level on the dipstick on the side with the inscription "ENGINE ON UNLADEN". The fluid level must be between the "MIN" and "MAX" marks.
	Bleeding
6.1	Pressurize the ABC system manually	When replacing the tandem pump (1). The vehicle must be ready to drive and standing horizontally on its wheels.	AR32.50-P-0021-01N
		Pressure pump	Figure
7	Press the vehicle level adjustment button repeatedly until both indicator lamps in the button light up	Vehicle level "High".
8	Press the vehicle level adjustment button repeatedly until both indicator lamps in the button go out	Vehicle level "Normal". Steps 7 and 8 must be repeated 3 times. Following removal, installation or replacement of suspension struts or valve units, steps 7 and 8 should be repeated approx. 15 times.
9	Turn off engine
10	After leaving to settle for approx. 10 min, pull the dipstick (2a) out of the expansion reservoir (2) and wipe off with a lint free cloth	Always wait for 10 minutes because the hydraulic fluid only flows back into the expansion reservoir (2) slowly and otherwise the measured value will be distorted.
11	Insert dipstick (2a) all the way into the expansion reservoir (2), pull out again, read off fluid level and correct if necessary	Read off the fluid level on the dipstick on the side with the inscription "ENGINE OFF UNLADEN". The fluid level must be between the "MIN" and "MAX" marks.
12	Start engine
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
13	Check ABC front axle valve unit (Y36/1) and ABC rear axle valve unit (Y36/2) for whistling/ hissing noises	In case of whistling/hissing noises in ABC front axle valve unit (Y36/1) or ABC rear axle valve unit (Y36/2): ↓ Switch off the engine at once! Raise the vehicle with the lifting platform until the suspension struts are relieved of load. Carefully open bleed screws (56 and/or 57) until hydraulic fluid slowly emerges. Close bleed screws and repeat steps 1 to 12.

ACTIVE BODY CONTROL

Fig 2: Identifying Funnel (126 589 12 63 00)

Fig 3: Identifying Pressure Pump (124 589 24 21 00)