Setting play between thrust element and steering rack - AR46.20-P-0601CW

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MODEL 172, 204, 216, 221

MODEL 207, 212 without CODE 211 (Direct-Steer system)

Fig 1: Setting Play Between Thrust Element And Steering Rack (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Setting Play Between Thrust Element And Steering Rack (2 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Adjustment Screw

Courtesy of MERCEDES-BENZ USA

	Checking, adjusting
1	Remove rack-and-pinion steering	MODEL 172 with ENGINE 152, 271, 276, 651	AR46.20-P-0600V
		MODEL 204.0/2/3 without CODE 211 (Direct-Steer system) MODEL 207 (except 207.388) without CODE 211 (Direct-Steer system)	AR46.20-P-0600CW
		MODEL 204.9, 212 without CODE 211 (Direct-Steer system)	AR46.20-P-0600EW
		MODEL 216, 221	AR46.20-P-0600SX
2	Mount the rack-and-pinion steering onto steering gear housing support	Only one adjustment procedure for the rack-and-pinion steering is permissible. if several caulkings (center punch marks) are present on the adjustment screw (4), it is assumed that an adjustment procedure has been undertaken. In this case, the rack-and-pinion steering has to be replaced. Make sure that the workplace is clean when carrying out the work described below and while performing repairs. Only the specified tools may be used. Before starting the repair, remove loose contamination on the steering housing (3) without using cleaning agent.
2		Steering gear housing support	Figure
3	Move steering rack (1) to center position	The notch on protective cap (2) must accurately match the marking (8) on the steer jacket (3).
4	Release boot (7) and slide towards tie rod end	MODEL 172 MODEL 204, 207, 212 without CODE 211 (Direct-Steer system)	AR46.40-P-0400CW
4	Release boot (7) and slide towards tie rod end	MODEL 216, 221	AR46.40-P-0400SX
5	Carefully pull rubber plug (6) out of adjustment screw (4)	Model 172, 204.9, 212, 216, 221 model 204.0/2/3, 207 with 4MATIC Carefully pull out rubber plug (6). Otherwise the rubber plug (6) will be damaged.
6	Remove adjustment screw (4) without bore from steering housing (3)	Model 204.0/2/3, 207 except 4MATIC, except CODE 211 (Direct steering)
7	Screw new adjustment screw with bore (4) into steering housing (3)	Model 204.0/2/3, 207 except 4MATIC, except CODE 211 (Direct-Steer system) Pay attention to correct seating of inner compression spring (5).
7		MODEL 204.0 (except 204.08), 204.2 (except 204.28), 204.3 MODEL 207 (except 207.388) without CODE 211 (Direct-Steer system)	*BA46.20-P-1009-01N
8	Apply marking (arrow) on steer jacket (3) and adjustment screw (4)	Model 172, 204.9, 212, 216, 221 model 204.0/2/3, 207 with 4MATIC. except CODE 211 (Direct-Steer system)
9	Release adjustment screw (4) through 90°	Model 204.0/2/3, 207 without 4MATIC, except CODE 211 (Direct-Steer system)
10	Mount bracket (02) with centering pin (01) on steer jacket (3)	Bracket	Fig 8
11	Remove centering pin (01) from bracket (02)
12	Insert dial indicator (03) in bracket (02) over adjustment screw (4)	Dial gauge	Fig 7
13	Check play between toothed rack (1) and thrust piece with dial indicator (03). To do so, turn the toothed rack (1) to and fro using a torque wrench (04) and an open end wrench or a plug-in open end wrench	The specified test torque of the toothed rack (1) must not be exceeded here. Otherwise the compression spring (5) may be damaged. Further procedure for determining an unacceptable play between toothed rack (1) and thrust piece: Play less than 0.04 mm: Adjust play Play 0.08 to 0.4 mm: Adjust Play Play greater than 0.4 mm: Replace rack-and-pinion steering
		MODEL 204 MODEL 207, 212 except CODE 211 (direct-Steer system)	*BA46.20-P-1008-01N
		MODEL 172	*BA46.20-P-1006-01F
		MODEL 204	*BE46.20-P-1001-01E
		MODEL 172, 216, 221 MODEL 207, 212 except CODE 211 (direct-Steer system)	*BE46.20-P-1001-01C
		MODEL 216, 221	*BA46.20-P-1007-01M
		Open end wrench	Figure
		Plug in open-end wrench	Figure
14	Detach bracket (02) and dial indicator (03) from steer jacket (3)
15	Adjust play between toothed rack (1) and thrust piece	If play is less than the specified tolerance, loosen adjustment screw with bore (4) slightly. If play is greater than the specified tolerance, tighten adjustment screw with bore (4) slightly.
16	Check play between toothed rack (1) and thrust piece using dial indicator (03), if necessary repeat adjustment procedure	If the play is outside the permissible tolerance, the adjustment must be repeated.
		Bracket	Fig 8
		Dial gauge	Fig 7
17	Secure the adjusting screw (4) with three center punch marks	Center punch marks, see arrow
18	Carefully press rubber plug (6) into adjustment screw (4)
19	Mount boot (7)	MODEL 172 MODEL 204, 207, 212 without CODE 211 (Direct-Steer system)	AR46.40-P-0400CW
19	Mount boot (7)	MODEL 216, 221	AR46.40-P-0400SX
20	Turn toothed rack (1) from end stop to end stop using socket wrench on input shaft of rack-and-pinion steering	The toothed rack (1) must move easily and evenly.
20		Socket wrench	Figure
21	Detach rack-and-pinion steering from steering gear housing support	Steering gear housing support	Figure
22	Install rack-and-pinion steering	MODEL 172 with ENGINE 152, 271, 276, 651 Remove/install rack-and-pinion steering	AR46.20-P-0600V
		Remove/install rack-and-pinion steering MODEL 204.0/2/3 without CODE 211 (Direct-Steer system) MODEL 207 (except 207.388) without CODE 211 (Direct-Steer system)	AR46.20-P-0600CW
		Remove/install rack-and-pinion steering MODEL 204.9, 212 without CODE 211 (Direct-Steer system)	AR46.20-P-0600EW
		Remove/install rack-and-pinion steering MODEL 216, 221	AR46.20-P-0600SX

TEST VALUES FOR STEERING GEAR

Number	Designation		MODEL 172	MODEL 207
BE46.20-P-1001-01C	Play between thrust piece and steering rack	mm	0, 04...0, 08	0, 04...0, 08

TEST VALUES FOR STEERING GEAR

Number	Designation		MODEL 212	MODEL 216
BE46.20-P-1001-01C	Play between thrust piece and steering rack	mm	0, 04...0, 08	0, 04...0, 08

TEST VALUES FOR STEERING GEAR

Number	Designation		MODEL 221
BE46.20-P-1001-01C	Play between thrust piece and steering rack	mm	0, 04...0, 08

TEST VALUES FOR STEERING GEAR

Number	Designation		MODEL 204
BE46.20-P-1001-01E	Play between thrust piece and steering rack	mm	0, 04...0, 08

STEERING GEAR

Number	Designation			MODEL 172
BA46.20-P-1006-01F	Toothed rack	Test torque	Nm	12 (±2)

STEERING GEAR

Number	Designation			MODEL 216.37	MODEL 216.386/394
BA46.20-P-1007-01M	Toothed rack	Test torque	Nm	12	12

STEERING GEAR

Number	Designation			MODEL 221.003/02/05/07/095/103/12/15/17/195	MODEL 221.08/094/18/194
BA46.20-P-1007-01M	Toothed rack	Test torque	Nm	12	12

STEERING GEAR

Number	Designation			MODEL 204 except 4MATIC, except 204.9	MODEL 204 with 4MATIC, with MODEL 204.9
BA46.20-P-1008-01N	Toothed rack	Test torque	Nm	12	12

STEERING GEAR

Number	Designation			MODEL 207 except 4MATIC	MODEL 207 with 4MATIC
BA46.20-P-1008-01N	Toothed rack	Test torque	Nm	12	12

STEERING GEAR

Number	Designation			MODEL 212 except 4MATIC	MODEL 212 with 4MATIC
BA46.20-P-1008-01N	Toothed rack	Test torque	Nm	12	12

STEERING GEAR

Number	Designation		MODEL 204 except 4MATIC, except 204.9	MODEL 204 with 4MATIC, with MODEL 204.9
BA46.20-P-1009-01N	Adjusting screw to rack-and-pinion steering	Nm	85	85

STEERING GEAR

Number	Designation		MODEL 207 except 4MATIC
BA46.20-P-1009-01N	Adjusting screw to rack-and-pinion steering	Nm	85

Fig 4: Identifying Steering Gear Housing Support (221 589 01 31 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Plug In Open-End Wrench (221 589 02 09 00)

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Fig 6: Identifying Open End Wrench (201 589 00 01 00)

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Fig 7: Identifying Dial Gauge (001 589 53 21 00)

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Fig 8: Identifying Bracket (639 589 01 31 00)

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Fig 9: Identifying Socket Wrench (203 589 04 31 03)

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