Remove/install rack-and-pinion steering - AR46.20-P-0600MCB

MODEL 451.3/4 with CODE V26 (Power steering, EPS (FFO)) 

Shown on model 451.30 

Fig 1: Identifying Rack-And-Pinion Steering Remove/Install Components - Shown On Model 451.30

Courtesy of MERCEDES-BENZ USA

	Remove
	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 the vehicle manufacturer.	AS00.00-Z-0010-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Evaluating steering gear when repairing accident vehicles		AH46.20-P-9409-01SM
1	Raise vehicle with vehicle lift
2	Remove underfloor panels
3	Remove front bulkhead	Model 451.3 (except 451.39), 451.4 (except 451.49) with code V26 (Power steering, EPS (FFO)) The front bulkhead is attached with two nuts.
4	Loosen nut (3) on steering coupling (2) until it can be turned by hand	Do not unscrew nut (3) completely. Otherwise, the screw/bolt (4) could fall out and the steering coupling (2) could disconnect, thus damaging the fanfare horns and airbag clock spring contact while setting the front wheels to a straight-ahead position. Turn the front wheels onto lock until the nut (3) is accessible.
5	Lower vehicle with vehicle lift
6	Place the front wheels in the straight-ahead position and block the steering wheel using the holding device	Lock steering wheel. Otherwise the fanfare horns and airbag clock spring contact may be damaged. Retainer device	Fig 2
7	Raise vehicle using the vehicle lift and secure in place		AR00.60-P-0100MCC
8	Unscrew nut (3) on the steering coupling (2), remove bolt (4) and slide steering coupling (2) upwards off the rack-and-pinion steering (1)	Only use bolt (4) and nut (3) approved for model 451. Bolts and nuts of other models with the same dimensions have different properties due to other surface coatings and may impair the strength of the bolted connection. When the nut (3) is loosened, the cam-shaped bolt (4) rotates with it approx. half a revolution. However, the bolt (4) does not have to be counterheld. Check the steering coupling (2) for ease of movement and replace if necessary.
9	Disconnect connector of power steering torque sensor (B23x1)
10	Disconnect power steering connector (M19x1)
11	Ground; disconnect interference suppression of power steering pump (W30/2)
12	Remove front wheels	Model 451.3/4 with code 494 (US version) with code V26 (Power steering, EPS (FFO))	AR40.10-P-1100MCU
		Model 451.3/4 with code V26 (Power steering, EPS (FFO)) except code 494 (US version)	AR40.10-P-1100MCC
13	Unscrew nut (6) on the left and right tie rod end (5) and pry off left and right tie rod end (5) using puller and unhook	Carefully press off tie rod ends (5). Otherwise, the seal bellows may be damaged. Puller	Fig 4
14	Remove front axle carrier support	Model 451.390/392/490/492 with code V26 (Power steering, EPS (FFO))	AR33.10-P-0002MEX
		Model 451.391/491 with code V26 (Power steering, EPS (FFO)) Remove front axle carrier support from front axle carrier (7) only.	AR33.10-P-0002MEV
15	Support front axle carrier (7) using telescopic lifter and removal fixture
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
		Removal fixture	Fig 3
16	Remove bolts (8) from front axle carrier (7)
17	Lower the front axle carrier (7) carefully until the bolts (9) are accessible	Do not pull front axle carrier (7) downward. Otherwise, it may damage the axle components.
18	Remove screw/bolts (9)	The left bolt (9) on the engine power steering can only be removed with the elastomer bearing of the rack-and-pinion steering (1).
19	Remove rack-and-pinion steering (1)
20	Remove elastomer bearing for mounting rack-and-pinion steering (1) and remove bolts (9)		AR46.20-P-0600-02SM
	Check
21	Check elastomer bearing for mounting rack-and-pinion steering (1) for damage, replace, if necessary
	Install
22	Insert bolts (9) and install elastomer bearing for mounting rack-and-pinion steering (1)		AR46.20-P-0600-02SM
		Replace bolts (9). Antifriction paste, rubber parts 2.5 kg, DBL 6867.00	*BR00.45-Z-1002-06A
23	Mount rack-and-pinion steering (1) on the front axle carrier (7)
24	Raise front axle carrier (7) using telescopic lifter and removal fixture up to bolting points
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
		Removal fixture	Fig 3
25	Tighten bolts (9)	Bolt, rack-and-pinion steering to front axle carrier	*BA46.20-P-1001-01G
26	Insert and tighten bolts (8)
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
		Screw in bolts (8) and remove telescopic lifter with removal fixture. Slide front axle carrier (7) into foremost position and align centrally in this position, then tighten the bolts (8). Bolt, front-axle carrier to body	*BA33.10-P-1001-01D
27	Install front axle carrier support	Model 451.390/392/490/492 with code V26 (Power steering, EPS (FFO))	AR33.10-P-0002MEX
		Model 451.391/491 with code V26 (Power steering, EPS (FFO))	AR33.10-P-0002MEV
28	Engage left and right tie rod end (5) in the steering knuckle and tighten with nuts (6)	Replace self-locking nut (6). Otherwise, the nuts (6) may work themselves loose. Check seal bellows, if necessary, replace tie rod end (5). Self-locking nut, tie rod to steering knuckle	*BA46.40-P-1001-01F
29	Mount front wheels	Model 451.3/4 with code 494 (US version) with code V26 (Power steering, EPS (FFO))	AR40.10-P-1100MCU
		Model 451.3/4 with code V26 (Power steering, EPS (FFO)) except code 494 (US version)	AR40.10-P-1100MCC
30	Contact connector of power steering torque sensor (B23x1)
31	Contact power steering connector (M19x1)
32	Ground; contact interference suppressor of power steering pump (W30/2)
33	Mount steering coupling (2) on the rack-and-pinion steering (1), insert bolt (4) and screw on nut (3)	Replace nut (3) and bolt (4). Only use bolt (4) and nut (3) approved for model 451. Bolts and nuts of other models with the same dimensions have different properties due to other surface coatings and may impair the strength of the bolted connection. Ensure that the front wheels are in the straight-ahead position. The nut (3) of steering coupling (2) will be tightened later.
34	Lower the vehicle with the vehicle lift and remove tensioning strap	Secure vehicle on vehicle lift	AR00.60-P-0100MCC
35	Remove retainer from steering wheel	Retainer device	Fig 2
36	Raise vehicle with vehicle lift
37	Tighten nut (3) on steering coupling (2)	Turn the front wheels onto lock until the nut (3) is accessible. Screw/bolt, steering coupling to rack-and-pinion steering	*BA46.10-P-1001-01F
38	Install front bulkhead	Model 451.3 (except 451.39), 451.4 (except 451.49) with code V26 (Power steering, EPS (FFO))
39	Install underfloor paneling
40	Perform wheel alignment check	When replacing the rack-and-pinion steering (1). Model 451.3/4 with code V26 (Power steering, EPS (FFO)) without recording the vehicle level	AR40.20-P-0200MCC
		Model 451.3/4 with code V26 (Power steering, EPS (FFO)) with recording the vehicle level Depending on the workshop equipment select between the measurement variant with recording the vehicle level or without recording the vehicle level.	AR40.20-P-0200MCE

Fig 2: Identifying Holding Device (129 589 01 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Removal Fixture (450 589 02 62 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Puller (450 589 01 33 00)

Courtesy of MERCEDES-BENZ USA