Remove/install front axle carrier - AR33.10-P-0001V

MODEL 171.442 /454 /456 /473 

Shown on model 171.442 

Fig 1: Identifying Front Axle Carrier Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Model 171.473 

Fig 2: Identifying Front Axle Carrier Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
Installation	The suspension component bolts and nuts must not be tightened until the vehicle wheels are on the ground and it is in a ready to drive condition
1.1	Deactivate easy entry/exit function for driver seat and steering wheel	On vehicles with Memory package (driver seat, steering column, mirrors), code 275. Otherwise the driver seat and steering wheel move to a different position, e.g. when the driver door is opened or closed. In turn the upper frame may be damaged by the steering wheel retaining device .	AR54.30-P-1000-02EDV
2	Rotate steering wheel into center position and fix in position with retainer	On a disengaged steering coupling (8) the steering wheel should not be turned because the spiral contact coil will be destroyed. Front wheels in straight-ahead position.
			Fig 3
3	Open engine hood		AR88.40-P-1000V
	Risk of injury  to skin or eyes caused by hydraulic fluid spraying out under high pressure. Risk of poisoning  caused by swallowing hydraulic fluid.	Depressurize the hydraulic system completely before starting any work on the system. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
4	Extract oil from expansion reservoir of power steering pump		Fig 8
5.1	Remove air filter housing	Engine 113	AR09.10-P-1150AC
6	Mount engine lifting device	Engine 271, 113	AR33.10-P-0100-01V
		Engine 272	AR33.10-P-0100-01VA
			Fig 9
7	Raise engine until the engine mounts (7) are relieved of load
8	Raise vehicle		AR00.60-P-1000V
9	Remove the front wheels
	Remove/install wheels, rotate if necessary		AP40.10-P-4050V
10	Detach lower engine compartment paneling	Installation:  Only install the engine compartment paneling after a leak check on the rack-and-pinion steering (15).	AR61.20-P-1105V
11	Remove underfloor paneling (4)		AR61.30-P-1001V
12	Remove the diagonal struts (3)		*BA62.30-P-1004-01A
13	Undo bolt (11) of retaining plate (12)		*BA46.20-P-1001-01F
14	Remove retaining plate (12) of oil lines from the rack-and-pinion steering (15)	Installation:  Replace sealing ring.
15	Pull oil lines out of rack-and-pinion steering (15) and place to one side	Before opening the hydraulic circuit of the rack-and-pinion steering (15) the area around the separation point should be cleaned thoroughly. Even minute particles of dirt, introduced into the hydraulic components, can result in malfunctions of the rack-and-pinion steering (15). Collect escaping hydraulic fluid in a container and seal connections with stop plugs. Installation:  Install new sealing rings.
			Fig 4
16.1	Separate electrical connector from SPS [PML] solenoid valve (Y10)	Only on vehicles with code (213) Speedsensitive power steering
17.1	Remove cable tie and place electrical line to the SPS [PML] solenoid valve (Y10) to one side.	Only on vehicles with code (213) Speed-sensitive power steering
18	Pry tie rods (9) off steering knuckles		AR46.40-P-0200-01V
			*BA46.40-P-1001-01E
			Fig 5
			Fig 6
19.1	Undo bolts (17) of heat shield (16) and remove heat shield (16)	Model 171.473
20	Detach steering coupling (8) from upper steering shaft	Refer to: ↓
		Remove/install steering coupling.	AR46.10-P-8000V
21	Detach left and right cross strut (13) from front axle carrier (1).	On model 171.473 remove right bolt of cross strut (13) when the front axle carrier is lowered (1).
			*BA33.20-P-1006-01E
			Fig 7
22	Detach left and right torque strut (14) from front axle carrier (1)		*BA33.20-P-1007-01E
			Fig 7
23	Detach bracket for oil line (6) of rack-and-pinion steering (15) on front axle carrier (1)
24	Undo bolts (10) on engine mount (7)	Engine 271, 272	*BA22.10-P-1006-01O
		Engine 113	*BA22.10-P-1001-01S
25	Support and secure the front axle carrier (1) with transmission jack and transmission plate		AR33.10-P-0100-03V
		Transmission jack Transmission platform
26	Unscrew bolts (2) of front-axle carrier (1)	The bolts (2) are self-tapping, for this reason to avoid any damage note the following: Bolts (2) must not be removed using an impact wrench. Never retap thread in longitudinal member. Replace bolts (2).
			*BA33.10-P-1005-01A
27	Pull the left and right front axle halves outwards while simultaneously lowering the front axle carrier (1).	Make sure that the front axle carrier (1) does not tilt when being lowered out of guide (5). Transmission jack
28	Check front axle carrier (1) for damage	If necessary: ↓ Replace front axle carrier (1).
29.1	Detach rack-and-pinion steering (15) from front axle carrier (1)	Only when replacing the front axle carrier (1) Refer to: ↓
		Remove/install rack-and-pinion steering	AR46.20-P-0600V
30	Install in the reverse order
31	Fill power steering pump, bleed it and check for leaks		AR46.30-P-0010V
32	Perform a wheel alignment check		AR40.20-P-0200V

Fig 3: Identifying Holding Device (129 589 01 21 00)

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Fig 4: Identifying Set Of Stop Plugs (129 589 00 91 00)

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Fig 5: Identifying Thrust Piece (140 589 00 63 00)

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Fig 6: Identifying Puller (124 589 03 33 00)

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Fig 7: Identifying Box Wrench Bit (211 589 00 03 00)

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Fig 8: Identifying Hand Pump (210 589 00 71 00)

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Fig 9: Identifying Engine Lifting Fixture (240 589 00 61 00)

Courtesy of MERCEDES-BENZ USA