Remove/Install Rear Electrohydraulic Suspension Delivery Pump - AR32.50-P-0046ME

Model 167 

with code 489 (AIRMATIC Dual Control/semi-active air suspension) 

with code 490 (Electrohydraulic suspension) 

Fig 1: Rear Electrohydraulic Suspension Delivery Pump Components Location - Model 167 With Code 489; 490

Courtesy of MERCEDES-BENZ USA

	Risk of injury  to skin or eyes from hydraulic fluid spraying out under pressure. Risk of poisoning from swallowing hydraulic fluid.	Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Information on E-ACTIVE BODY CONTROL suspension		AH32.50-P-0002-01ME
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove/install
1	Remove pump unit of rear electrohydraulic suspension.		AR32.50-P-0048ME
2	Unclip electric lines (1) from rear left suspension strut electrohydraulic controller unit (M67/2) or rear right suspension strut electrohydraulic controller unit (M67/3) and expose.
3	Unscrew screws and remove respective heat shield (4).	Screw, heat shield to hydraulic pump	*BA32.50-P-1008-04A
4.1	Remove bolts (2).	When removing rear left suspension strut electrohydraulic controller unit (M67/2)
		Screw, right hydraulic pump to left hydraulic pump	*BA32.50-P-1007-04A
4.2	Remove screw/bolts (3).	When removing rear right suspension strut electrohydraulic controller unit (M67/3)
		Screw, right hydraulic pump to left hydraulic pump	*BA32.50-P-1007-04A
5	Remove rear left suspension strut electrohydraulic controller unit (M67/2) or rear right suspension strut electrohydraulic controller unit (M67/3).	Modify all holders if rear left suspension strut electrohydraulic controller unit (M672) or rear right suspension strut electrohydraulic controller unit (M67/3) is replaced.
6	Install in the reverse order.