Remove/install steering knuckle · ar3550w0400a · Mercedes-Benz WIS

AR35.50-W-0400A

Remove/install steering knuckle

27.4.10

REAR AXLE 749.109/ 110

W35.25-1002-09

1 Thrust washer

2 Upper needle roller bearing

3 Circlip (top)

4 Cap (top)

5 O-ring

6 Kingpin

13 Screw

14 Shim

15 Stop

16 Nut

17 Screw

18 Protective cap

7 Steering knuckle

8 O-ring

9 Cap (bottom)

10 Circlip (bottom)

11 Lower needle roller bearing

12 Pitman arm

Modification notes

19.9.06

Reference link corrected.

Step 13

	Removing
1	Remove wheel hub of trailing axle		AR35.50-W-0003A
2	Detach steering cylinder from pitman arm (12)
3	Remove steering arm (12)
4	Remove circlips (3, 10)
5	Remove caps (4, 9)
6	Remove kingbolt (6)	 The upper needle roller bearings (2) are pressed out together with the kingpin (6).	AR35.50-W-0400-02A
			*739589003300
7	Remove steering knuckle (7)
8	Remove shim (14) and pressure plate (1)
9	Remove needle bearing (11) at bottom of steering knuckle		*739589011500
	Install
10	Install needle bearing (11) at bottom of steering knuckle		AR35.50-W-0400-03A
			*BE35.50-N-1001-02D
			*389589006300
11	Install steering knuckle (7) with shim (14) and pressure plate (1)
12	Check end play of steering knuckle (7) and adjust if necessary		AR35.50-W-0400-04A
			*BE35.50-N-1003-02D
13	Install kingpin (6)		AR35.50-W-0400-06A
			*389589006100
			*389589036300
14	Install needle roller bearing (2) at the top of steering knuckle		AR35.50-W-0400-05A
			*BE35.50-N-1002-02D
			*739589011500
15	Install caps (4, 9) with new O-rings (5, 8)
16	Install circlips (3, 10)
17	Install pitman arm (12)		*BA35.50-N-1001-03C
18	Attach steering cylinder to pitman arm (12)
19	Lubricate steering knuckle bearing	 The steering knuckle bearing must be lubricated within one hour of installing the kingpin.	*BR00.45-Z-1001-06A
20	Remove wheel hub of trailing axle		AR35.50-W-0003A

Test and adjustment values for trailing axle

Number	Designation		Rear axle 749.109/110


BE35.50-N-1001-02D	Distance from lower needle bearing to underside of steering knuckle	mm	18
BE35.50-N-1002-02D	Distance from upper needle bearing to top side of steering knuckle	mm	15
BE35.50-N-1003-02D	Axial play of steering knuckle	mm	0.01 to 0.15

 Trailing axle

Number	Designation				Rear axle 749.109/110


BA35.50-N-1001-03C	Bolt of steering lever and steering knuckle arm to trailing axle (NA)	M161.5	EN 14112	Nm	294
		M161.5		Nm	400
		M181.5	10.9	Nm	580
		M201.5	10.9	Nm	800
		M221.5	10.9	Nm	870
		M241.5	10.9	Nm	920