Remove/install rear suspension valve body · ar3250p0002rx · Mercedes-Benz WIS

AR32.50-P-0002RX

Remove/install rear suspension valve body

25.10.10

MODEL 230.456 /458 with CODE (487) Active Body Control (ABC)

MODEL 230.470 /471 /472 /477

MODEL 230.479 as of model year 2006

Remove/install rear suspension valve body

P32.50-2249-06

1 Nut

2 Bolts

2a Hydraulic lines

4 Electrical connectors

5 Cable tie

6 Retaining clamp

7 Quick-release fittings

8 Hydraulic lines

Y36/2 ABC rear axle valve unit

 	Remove/install
	Notes on fitting hydraulic lines and hoses		AH32.50-P-0001-02A
		 Before opening the hydraulic system the area surrounding the separation point should be cleaned thoroughly. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the hydraulic system.
	Notes on Active Body Control suspension		AH32.50-P-0001-01N
1	Detach left rear wheel
	Remove/install wheels		AP40.10-P-4050Z
2	Remove fender liner in the rear left fender		AR88.10-P-1400R
3	Relieve pressure in the rear axle ABC system		AR32.50-P-0001-01N
			*BA32.50-P-1001-02B
4	Remove bolts (2) and remove hydraulic lines (2a)	 Ensure that no dirt gets into the opened hydraulic lines (2a) as this can lead to the failure of the ABC system.
			*BA32.50-P-1022-01A
5	Separate hydraulic lines (8) using release tool on quick-release couplings (7)	 Ensure that no dirt gets into the open quick-release couplings (7) as this can lead to the failure of the ABC system.
			*221589013300
			*230589013300
		 Observe different cross-sections of the quick-release couplings (7).
		 Installation: Ensure that the quick-release couplings (7) latch completely.
		 Installation: The hydraulic lines (8) and quick-release couplings (7) are color coded and must not be transposed.
6	Detach retaining clamp (6) and separate cable ties (5)
7	Slacken nut (1)
8	Pull rear axle ABC valve unit (Y36/2) backwards slightly and detach electrical connectors (4)	 Only pull the rear axle ABC valve unit (Y36/2) back until the electrical connectors (4) are accessible.
		 Before detaching the electrical connectors (4), check whether the color coding on the rear axle ABC valve unit (Y36/2) and the electrical connectors (4) are present. Otherwise, if incorrectly mounted, the rear axle ABC valve unit (Y36/2) may be destroyed or malfunction. Warning: Risk of accident!
		 Installation: The electrical plugs and connections on the rear axle ABC valve unit (Y36/2) are color coded relative to each other, and they must not be mixed up.
9	Remove rear axle ABC valve unit (Y36/2) to the rear
10	Detach hydraulic lines (8) from rear axle ABC valve unit (Y36/2)	When replacing rear axle ABC valve unit (Y36/2)
		 Installation: Check sealing rings for damage and replace if necessary. Check support rings for damage and replace the complete hydraulic line (8) if necessary.
			*BA32.50-P-1022-01A
11	Install in the reverse order
12	Fill and bleed ABC system		AR32.50-P-0021N
13	Carry out plunger travel calibration using STAR DIAGNOSIS	When replacing rear axle ABC valve unit (Y36/2)

 Active Body Control, lines

Number	Designation			Model 230


BA32.50-P-1001-02B	Bleed screw on soldered fitting in hydraulic line	M101	Nm	20

 Active Body Control suspension

Number	Designation			Model 230


BA32.50-P-1022-01A	Bolt, line to rear axle valve unit	M825	Nm	20

221 589 01 33 00

Detaching tool

230 589 01 33 00

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