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

MODEL 166, 292 with ENGINE 157, 278 with CODE 468 (ACTIVE CURVE SYSTEM) 

MODIFICATION NOTES

3.12.15

Basic data augmented

Operation steps 6, 11

	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	Extract oil from hydraulic pump expansion reservoir for Active Roll Stabilization (7)	Hand pump	Fig 2
2	Detach poly-V belt (3) from hydraulic pump for Active Roll Stabilization (8)		AR13.20-P-0001MLJ
3	Detach charge air cooler vent line (4) from bracket (2) of hydraulic pump for Active Roll Stabilization (8)
4	Unclip electrical connection from throttle valve of hydraulic pump for Active Roll Stabilization (8), from bracket (2) and set aside
5	Remove feed line for Active Roll Stabilization (5) from cylinder head cover and front cover
6	Detach feed line for hydraulic pump of Active Roll Stabilization (5) from hydraulic pump for Active Roll Stabilization (8) and set aside	Bolt, hydraulic line to hydraulic pump	*BA32.00-P-1006-01A
7	Seal openings with stop plugs	Record plug	Figure
8	Detach pressure line (6) from hydraulic pump for Active Roll Stabilization (8) to valve unit on hydraulic pump for Active Roll Stabilization (8)	Don not detach pressure line (6) before 10 minutes ave elapsed since switching off the engine, as the roll stabilization system is only then fully depressurized. Always replace the sealing ring. Bolt, hydraulic line to hydraulic pump	*BA32.00-P-1006-01A
9	Seal openings with stop plugs	Record plug	Figure
10	Remove bolts (1) of the hydraulic pump for Active Roll Stabilization (8) from the timing case cover and crankcase, then remove the hydraulic pump for Active Roll Stabilization (8) upwards	Bolt, hydraulic pump bracket to timing case	*BA32.00-P-1011-01A
		Bolt, hydraulic pump to bracket for hydraulic pump	*BA32.00-P-1010-01A
11	Detach bracket (2) from hydraulic pump for Active Roll Stabilization (8)	When replacing the hydraulic pump for Active Roll Stabilization (8). Bolt, hydraulic pump to coolant pump	*BA32.00-P-1008-01A
12	Detach belt pulley (9) from hydraulic pump for Active Roll Stabilization (8)	When replacing the hydraulic pump for Active Roll Stabilization (8). Bolt, belt pulley to hydraulic pump	*BA32.00-P-1004-01A
13	Install in the reverse order
14	Fill hydraulic pump expansion reservoir for Active Roll Stabilization (7) and vent ACTIVE CURVE SYSTEM		AR32.34-P-0021GQ
15	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Run an engine test, while doing so check the hydraulic pump for Active Roll Stabilization (8) for proper operation and leaktightness	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A

HYDRAULIC PUMP

Number	Designation		Model 166 with engine 157	Model 166 with engine 278
BA32.00-P-1004-01A	Bolt, belt pulley to hydraulic pump	Nm	30	30

HYDRAULIC PUMP

Number	Designation		Model 292 with engine 157	Model 292 with engine 278
BA32.00-P-1004-01A	Bolt, belt pulley to hydraulic pump	Nm	30	30

HYDRAULIC PUMP

Number	Designation		Model 166 with engine 157	Model 166 with engine 278
BA32.00-P-1006-01A	Bolt, hydraulic line to hydraulic pump	Nm	9	9

HYDRAULIC PUMP

Number	Designation		Model 292 with engine 157	Model 292 with engine 278
BA32.00-P-1006-01A	Bolt, hydraulic line to hydraulic pump	Nm	9	9

HYDRAULIC PUMP

Number	Designation		Model 166 with engine 157	Model 166 with engine 278
BA32.00-P-1008-01A	Bolt, hydraulic pump to coolant pump	Nm	20	20

HYDRAULIC PUMP

Number	Designation		Model 292 with engine 157	Model 292 with engine 278
BA32.00-P-1008-01A	Bolt, hydraulic pump to coolant pump	Nm	20	20

HYDRAULIC PUMP

Number	Designation		Model 166 with engine 157	Model 166 with engine 278
BA32.00-P-1010-01A	Bolt, hydraulic pump to bracket for hydraulic pump	Nm	20	20

HYDRAULIC PUMP

Number	Designation		Model 292 with engine 157	Model 292 with engine 278
BA32.00-P-1010-01A	Bolt, hydraulic pump to bracket for hydraulic pump	Nm	20	20

HYDRAULIC PUMP

Number	Designation		Model 166 with engine 157	Model 166 with engine 278
BA32.00-P-1011-01A	Bolt, hydraulic pump bracket to timing case	Nm	20	20

HYDRAULIC PUMP

Number	Designation		Model 292 with engine 157	Model 292 with engine 278
BA32.00-P-1011-01A	Bolt, hydraulic pump bracket to timing case	Nm	20	20

Fig 1: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA