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Home >> Mercedes Benz >> 2013 >> S550 Base >> Repair and Diagnosis >> Steering >> Power Steering >> Steering - 221 Chassis - 2 Of 2 >> Testing & Repair >> Remove/install power steering pump >> Remove/install power steering pump - AR46.30-P-0500SY

Remove/install power steering pump - AR46.30-P-0500SY

MODEL 221 (except 221.176/179) with CODE (487) Active Body Control (ABC) except CODE (Z07) Top protection without electrohydraulic power steering (EHPS) 

MODEL 216.371/377 without electrohydraulic power steering (EHPS) 

Fig 1: Identifying Power Steering Pump Remove/Install Components (1 Of 2)
G10127603Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Power Steering Pump Remove/Install Components (2 Of 2)
G10127604Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
IMPORTANT Notes on Active Body Control suspension   AH32.50-P-0001-01N
1.1 Remove air filter housing Engine 156 AR09.10-P-1150SMG
Engine 272, 273 AR09.10-P-1150SX
1.2 Remove engine trim panel Engine 642  
1.3 Remove front engine cover and left engine air intake duct Engine 629  
2 Separate vacuum line (10) of switchover valve (Y58/1)    
3 Loosen bolts (2a) of belt pulley (2) SPECIAL TOOL Counterholder Fig 4
TORQUE SPECIFICATION Model 221 except 221.077/177 *BA46.30-P-1003-01N 
TORQUE SPECIFICATION Model 216 except 216.377 *BA46.30-P-1008-01Q 
TORQUE SPECIFICATION Model 216.377, 221.077/177 *BA46.30-P-1009-01O 
4 Remove poly-V belt (2b) Engine 156 AR13.22-P-1202SMG
Engine 272, 273 AR13.20-P-0001SX
Engine 642
Engine 629		 AR13.22-P-1202SXI
5 Remove screw (1s) from retaining clamp (1a)    
6 Detach belt pulley (2) and lift out    
7 Separate cable tie (7)    
8 Disconnect electrical connector (8) at ABC suction restrictor valve (Y86/1)    
9 Disconnect supply lines (3c, 4c) SPECIAL TOOL Clamp Fig 3
10 Open upper clamp (1b) and disconnect feed line (3c) from power steering pump (9) SPECIAL TOOL Hose clamp pliers Fig 5
11 Detach pressure line of power steering (3b) TORQUE SPECIFICATION Model 221 except 221.077/177 *BA46.30-P-1005-01N 
TORQUE SPECIFICATION Model 216 except 216.377 *BA46.30-P-1009-01Q 
TORQUE SPECIFICATION Model 216.377, 221.077/177 *BA46.30-P-1007-01O 
12 Detach ABC pressure line (4b)    
13 Open lower clamp (1b) and disconnect feed line (4c) from power steering pump (9) SPECIAL TOOL Hose clamp pliers Fig 5
14 Remove bottom engine compartment paneling   AR61.20-P-1105SX
15 Remove bolts (11) and place refrigerant compressor (A9) to one side with lines connected IMPORTANT Loosen (but do not remove) the lower screw of the refrigerant compressor (A9) and leave it inserted in the thread.
IMPORTANT Ensure that no cables or lines, brackets are damaged
Engine 272, 273		  
TORQUE SPECIFICATION Bolt, refrigerant compressor to timing case/crankcase/engine support *BA83.55-P-1001-01M 
TORQUE SPECIFICATION Bolt, refrigerant line to refrigerant compressor
Engine 156		 *BA83.55-P-1003-01M 
TORQUE SPECIFICATION Screw/bolt, refrigerant compressor to timing case/crankcase/and/or engine support *BA83.55-P-1001-01T 
TORQUE SPECIFICATION Bolt, refrigerant lines to refrigerant compressor *BA83.55-P-1003-01T 
16 Remove bolt (5) TORQUE SPECIFICATION Model 221 except 221.077/177 *BA46.30-P-1002-01N 
TORQUE SPECIFICATION Model 216 except 216.377 *BA46.30-P-1002-01Q 
TORQUE SPECIFICATION Model 216.377, 221.077/177 *BA46.30-P-1004-01O 
17 Unscrew nut (9b). IMPORTANT Place the ground cable to one side.  
TORQUE SPECIFICATION Model 221 *BA46.30-P-1001-01N 
TORQUE SPECIFICATION Model 216 *BA46.30-P-1001-01Q 
TORQUE SPECIFICATION 216.377, 221.077/177 *BA46.30-P-1002-01O 
18 Remove bolts (9a) TORQUE SPECIFICATION Model 221 except 221.077/177 *BA46.30-P-1004-01N 
TORQUE SPECIFICATION Model 216 except 216.377 *BA46.30-P-1004-01Q 
TORQUE SPECIFICATION Model 216.377, 221.077/177 *BA46.30-P-1001-01O 
19 Remove power steering pump (9) with bracket (9c) upwards IMPORTANT Replace self-tapping bolts if necessary, observing the following:
  • Never retap the thread.
  • Use original bolts only.
  • When screwing in do not attach bolts at an angle
  • Do not use an impact wrench.

IMPORTANT Detach bracket (9c) from power steering pump (9) if necessary.		  
TORQUE SPECIFICATION Model 221 except 221.077/177 *BA46.30-P-1009-01N 
TORQUE SPECIFICATION Model 216 except 216.377 *BA46.30-P-1003-01Q 
TORQUE SPECIFICATION Model 216.377, 221.077/177 *BA46.30-P-1005-01O 
20 Install in the reverse order    
21 Fill and bleed active body control (ABC)   AR32.50-P-0021SX
22 Fill and bleed power steering pump (9)   AR46.30-P-0010SX 
POWER STEERING PUMP

Number Designation Model 216 with engine 273 with code 487
BA46.30-P-1001-01Q Tandem pump to crankcase   Nm 20
BA46.30-P-1002-01Q Bolt, bracket/support of tandem pump to engine support   Nm 35
BA46.30-P-1003-01Q Bolt, plate/bracket to tandem pump   Nm 35
BA46.30-P-1004-01Q Tandem pump to timing case M8X44 self-tapping Nm 35
M8X30 Nm 20
BA46.30-P-1008-01Q Belt pulley to tandem pump   Nm 30
BA46.30-P-1009-01Q Union nut, high-pressure expansion hose of rack-and-pinion steering to tandem pump   Nm 40
POWER STEERING PUMP

Number Designation Model 221 with code 487
BA46.30-P-1001-01N Nut, power steering pump to crankcase Nm 20
BA46.30-P-1002-01N Bolt, bracket of power steering pump to engine support Nm 30
BA46.30-P-1003-01N Bolt, belt pulley to power steering pump Nm 25
BA46.30-P-1004-01N Screw/bolt, power steering pump to timing case cover Nm 35
BA46.30-P-1005-01N Union nut, high pressure expansion hose of power steering to power steering pump Nm 40
BA46.30-P-1009-01N Bolt, bracket to power steering pump Nm 20
POWER STEERING PUMP

Number Designation Engine 156 in model 216, 221
BA46.30-P-1001-01O Bolt, power steering pump bracket to timing case cover M8X30 Nm 30
M8X35 Nm 30
BA46.30-P-1002-01O Bolt, power steering pump bracket to crankcase M8X90 Nm 30
BA46.30-P-1004-01O Screw/bolt, support holder to cylinder crankcase M8X35 Nm 30
BA46.30-P-1005-01O Screw/bolt, support holder to power steering pump M8X35 Nm 30
BA46.30-P-1007-01O High-pressure expansion hose to power steering pump   Nm 40
BA46.30-P-1009-01O Bolt, belt pulley to tandem pump   Nm 30
REFRIGERANT COMPRESSOR

Number Designation Engine 272 Engine 273
BA83.55-P-1001-01M Screw/bolt, refrigerant compressor to timing case/crankcase/engine support Nm 20 20
BA83.55-P-1003-01M Screw/bolt, refrigerant line to refrigerant compressor Nm 20 20
REFRIGERANT COMPRESSOR

Number Designation Engine 156 in model 204, 209, 211, 212, 216, 219, 221, 230
BA83.55-P-1001-01T Screw/bolt, refrigerant compressor to timing case/crankcase/and/or engine support Nm 20
BA83.55-P-1003-01T Screw/bolt, refrigerant lines to refrigerant compressor Nm 20
Fig 3: Identifying Circuit (000 589 54 37 00)
G07666824Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Counterholder (603 589 00 40 00)
G07300884Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Hose Clamp Pliers (003 589 03 37 00)
G07300850Courtesy of MERCEDES-BENZ USA
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