Remove/Install Active Roll Stabilization Hydraulic Pump - AR32.34-P-0030GQ

Model 166 with engine 276, 642 with code 468 (ACTIVE CURVE SYSTEM) 

Model 292 with engine 276, 642 with code 468 (ACTIVE CURVE SYSTEM) 

Shown on model 166.057 

Fig 1: Active Roll Stabilization Hydraulic Pump Components Location - Model 166 With Engine 276 With Code 468

Courtesy of MERCEDES-BENZ USA

	Risk of injury  caused by pinching or crushing when working on springs or spring bodies that are under tension	Use only approved tensioning devices; additionally screen off hazardous area if necessary. Check special tools for damage and proper operation (visual inspection). Wear protective gloves.	AS00.00-Z-0001-01A
	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
	Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Notes on active roll stabilization		AH32.34-P-0001-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Switch off ignition and store transmitter key outside of transmission range (min. 2 m)
2	Open engine hood and raise to vertical position	Model 166 with engine 276, 642 with code 468 (ACTIVE CURVE SYSTEM)	AR88.40-P-1000GQ
3	Remove upper engine cover
4	Remove tensioning device for poly-V belt	Model 292 with engine 276 with code 468 (ACTIVE CURVE SYSTEM)	AR13.25-P-3220GQC
		Model 166 with engine 276.9 with code 468 (ACTIVE CURVE SYSTEM)	AR13.20-P-0001GQ
		Model 166, 292 with engine 642 with code 468 (ACTIVE CURVE SYSTEM)	AR13.20-P-0001OGR
		Model 166, 292 with engine 276.8 with code 468 (ACTIVE CURVE SYSTEM)	AR13.25-P-3220GQC
5	Release and disconnect electrical connection from throttle valve for Active Roll Stabilization (Y86/2)
6	Clamp off hose (1a) and detach from hydraulic pump (1)		AR32.00-P-0001-01A
		Clamp	Fig 2
		Record plug	Fig 3
7	Detach line (1b) from hydraulic pump (1)		AR32.00-P-0001-01A
		Bolt, hydraulic line to hydraulic pump	*BA32.00-P-1006-01A
		Record plug	Fig 3
8	Remove bolts (2) and remove hydraulic pump (1)	Bolt, hydraulic pump to cylinder crankcase	*BA32.00-P-1001-01A
		Bolt, hydraulic pump to timing case	*BA32.00-P-1002-01A
		Bolt, carrier for hydraulic pump to cylinder crankcase	*BA32.00-P-1003-01A
9	Install in the reverse order
10	Fill and bleed ACTIVE CURVE SYSTEM		AR32.34-P-0021GQ

Fig 2: Identifying Clamp (000 589 54 37 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA