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

MODEL 172 with ENGINE 276 

MODEL 204, 207 with ENGINE 276.9 

MODEL 212 with ENGINE 276 

MODEL 251 with ENGINE 276 

Shown on model 172 

Fig 1: Identifying Power Steering Pump Remove/Install Components - Shown On Model 172 (1 Of 2)
G09976773Courtesy of MERCEDES-BENZ USA

Shown on model 172 

Fig 2: Identifying Power Steering Pump Remove/Install Components - Shown On Model 172 (2 Of 2)
G09976774DANGERDANGERREMOVINGINSTALLINGINSTALLATION IMPORTANTTORQUE SPECIFICATIONINSTALLATION IMPORTANTNOTESNOTESSPECIAL TOOLIMPORTANTSPECIAL TOOLIMPORTANTINSTALLATION IMPORTANTTORQUE SPECIFICATIONTORQUE SPECIFICATIONTORQUE SPECIFICATIONSPECIAL TOOLTORQUE SPECIFICATIONTORQUE SPECIFICATIONREFER TO MAINTENANCEREFER TO MAINTENANCEREFER TO MAINTENANCEREFER TO MAINTENANCEREFER TO MAINTENANCECourtesy of MERCEDES-BENZ USA
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
DANGER 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
REMOVINGINSTALLING Remove/install     
1 Remove bottom engine compartment paneling MODEL 251 with ENGINE 276 AR61.20-P-1105RT
MODEL 204.0/2 with ENGINE 276.9
MODEL 204.3 with ENGINE 276.9
MODEL 207 with ENGINE 276.9
MODEL 212 with ENGINE 276.9		 AR61.20-P-1105EW
MODEL 204.9 with ENGINE 276.9 AR61.20-P-1105CY
MODEL 172.4 with ENGINE 276
INSTALLATION IMPORTANT Only mount bottom engine compartment paneling after performing a leak check.		 AR61.20-P-1105W
2 Remove poly-V belt MODEL 212 with ENGINE 276.9 AR13.20-P-0001EL
MODEL 172 with ENGINE 276 AR13.20-P-0001W
MODEL 204, 207 with ENGINE 276.9 AR13.20-P-0001FH
MODEL 251 with ENGINE 276 AR13.20-P-0001RTZ
3 Remove tensioner pulley (2) TORQUE SPECIFICATION Screw/bolt, guide pulley to carrier *BA13.25-P-1003-01X 
4 Open cable ties (arrow) MODEL 172 with ENGINE 276
MODEL 204.9, 207 with ENGINE 276.9
MODEL 212 with ENGINE 276
INSTALLATION IMPORTANT Replace cable ties (arrow).		  
5.1 Detach engine compartment/vehicle interior electrical connector (X25/2) MODEL 172 with ENGINE 276
MODEL 212 with ENGINE 276		  
5.2 Disconnect interior and engine wiring harness electrical connector (X26) MODEL 204.9, 207 with ENGINE 276.9  
6 Remove ME-SFI [ME] control unit (N3/10) upward out of the bracket and set aside with electrical lines connected    
NOTES Information on preventing damage to electronic components due to electrostatic discharge AH54.00-P-0001-01A
7 Suction off oil out of power steering expansion reservoir (3) NOTES The area surrounding the separation point should be cleaned thoroughly before opening the hydraulic system.
Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the hydraulic system.		  
SPECIAL TOOL Hand pump Figure
8 Detach return hose (4) from expansion reservoir (3) IMPORTANT Collect escaping oil with a rag and plug line connections.  
SPECIAL TOOL Record plug Figure
9 Unscrew bolt (5) and remove pressure line (9) from power steering pump (1) IMPORTANT Collect escaping oil with a rag and plug line connections.
INSTALLATION IMPORTANT Replace seal.		  
TORQUE SPECIFICATION
MODEL 212 with ENGINE 276		 *BA46.30-P-1003-01T 
TORQUE SPECIFICATION
MODEL 172 with ENGINE 276
MODEL 204, 207 with ENGINE 276.9		 *BA46.30-P-1004-01R 
TORQUE SPECIFICATION
MODEL 251 with ENGINE 276		 *BA46.30-P-1003-01V 
SPECIAL TOOL Record plug Figure
10 Detach electrical connection (6) from power steering pump quantity control valve (Y10/1) Only with power steering pumps with quantity control valve.  
11 Unhook vacuum line (7) from expansion reservoir (3) MODEL 172 with ENGINE 276
MODEL 212 with ENGINE 276		  
12 Remove screws/bolts (8) TORQUE SPECIFICATION
MODEL 212 with ENGINE 276		 *BA46.30-P-1001-01T 
TORQUE SPECIFICATION
MODEL 172 with ENGINE 276
MODEL 204, 207 with ENGINE 276.9		 *BA46.30-P-1002-01R 
MODEL 251 with ENGINE 276 *BA46.30-P-1001-01V 
13 Remove power steering pump (1) with expansion reservoir (3) from control housing and take out of the engine compartment    
14 Detach expansion reservoir (3) from power steering pump (1) When replacing the power steering pump (1)  
AR46.25-P-1000W 
15 Install in the reverse order    
16 Fill and bleed power steering pump (1) MODEL 212 with ENGINE 276 AR46.30-P-0010EW
MODEL 172 with ENGINE 276 AR46.30-P-0010V 
MODEL 204, 207 with ENGINE 276.9 AR46.30-P-0010CW
MODEL 251 with ENGINE 276 AR46.30-P-0010RT
17 Check oil level in expansion reservoir (3) and correct if necessary    
REFER TO MAINTENANCE MODEL 212 with ENGINE 276
without CODE 211 (Direct-Steer system)		 AP46.00-P-4612EW
REFER TO MAINTENANCE MODEL 172 with ENGINE 276 AP46.00-P-4611V 
REFER TO MAINTENANCE MODEL 204 with ENGINE 276 AP46.00-P-4612CW
REFER TO MAINTENANCE MODEL 207 with ENGINE 276.9
without CODE 211 (Direct-Steer system)		 AP46.00-P-4612CC
REFER TO MAINTENANCE MODEL 251 with ENGINE 276 AP46.00-P-4611RT
POWER STEERING PUMP

Number Designation MODEL 212
BA46.30-P-1001-01T Power steering pump on timing case/crankcase Normal threads Nm 20
Self-tapping threads Nm 35
POWER STEERING PUMP

Number Designation MODEL 251 with ENGINE 276
BA46.30-P-1001-01V Power steering pump to timing case Self-tapping threads Nm 35
Normal threads Nm 20
POWER STEERING PUMP

Number Designation MODEL 251 with ENGINE 276
BA46.30-P-1003-01V Attachment, high-pressure expansion hose of rack-and-pinion steering to power steering pump Union nut Nm 40
Banjo bolt Nm 45
Screw M8 Nm 18
POWER STEERING PUMP

Number Designation MODEL 172 with ENGINE 271, 276, 651 MODEL 204 with ENGINE 156, 271, 272, 274, 276, 642, 646
BA46.30-P-1004-01R Attachment, high-pressure expansion hose of rack-and-pinion steering to power steering pump or tandem pump Union nut Nm 40 40
Banjo bolt Nm - 45
Bolt M8 Nm 18 18
POWER STEERING PUMP

Number Designation MODEL 207
BA46.30-P-1004-01R Attachment, high-pressure expansion hose of rack-and-pinion steering to power steering pump or tandem pump Union nut Nm -
Banjo bolt Nm -
Bolt M8 Nm 18
BELT TENSIONING DEVICE

Number Designation ENGINE 276
BA13.25-P-1003-01X Screw/bolt, guide pulley to carrier Nm 25
POWER STEERING PUMP

Number Designation MODEL 212
BA46.30-P-1003-01T Expansion reservoir bolt Nm 9
POWER STEERING PUMP

Number Designation MODEL 172 with ENGINE 271, 276, 651 MODEL 204 with ENGINE 156, 271, 272, 274, 276, 642, 646
BA46.30-P-1002-01R Power steering pump/tandem pump to timing case Self-tapping threads Nm 35 35
Normal threads Nm 20 20
POWER STEERING PUMP

Number Designation MODEL 207
BA46.30-P-1002-01R Power steering pump/tandem pump to timing case Self-tapping threads Nm 35
Normal threads Nm 20
Fig 3: Identifying Hand Pump (210 589 00 71 00)
G09976775Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Record Plug (129 589 00 91 00)
G09976776Courtesy of MERCEDES-BENZ USA
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