Replace front axle wheel hub · sm3320w0003d · Mercedes-Benz WIS

SM33.20-W-0003D

Replace front axle wheel hub

4.12.09

FRONT AXLE 739.5 in MODEL 950, 952, 953, 954
Service measure with Code: RADNABE-5

W33.20-1023-05

1 Wheel hub with brake disc

2 Cylinder head bolt

3 Thrust plate

4 Clamp nut

5 Gasket

6 Cover

7 Screw

Modification notes

18.1.05	Part no. for trailing axle, axle model des. 749.108 added.
29.3.05	Work units/flat rates for trailing axle added.

Ordering parts:

To prevent bottlenecks for front axle parts orders, always check the axle model designation on the affected vehicle prior to placing your order.

 Scrap the removed wheel hubs.

Operation no. of operation texts or standard texts and flat rates

Category	Op. no.	Operation text	Time	Acc. no.	Code
O	025142	OPERATION: REPLACE FRONT AXLE WHEEL HUBS	3,8h	33 920 72	RADNABE-5
O	025277	OPERATION: IN ADDITION TO REPLACE FRONT AXLE WHEEL HUB, REPLACE WHEEL HUBS OF FRONT/TRAILING AXLE	3,6h	33 920 72	RADNABE-5

	Removing
1	Remove wheels		AR40.10-W-1100A
2	Remove brake pads		AR42.10-W-0170A
3	Remove brake carrier with brake caliper		AR42.10-W-0600A
4	Remove ABS sensor		AR42.30-W-0150A
5	Remove cover (6)	 Scrap cover.
6	Loosen cylinder head bolt (2) and screw off clamp nut (4)		*739589001300
7	Remove thrust washer (3)
8	Remove wheel hub (1)		*739589004300
		 Do not remove the tapered roller bearing, cassette-type sealing ring or axial sealing ring.
9	Remove rust from steering knuckle contact surface
10	Degrease bearing seats at axle journal
	Install
11	Mount the wheel hub (1) on the steering knuckle	 Wheel hub is preassembled and tapered roller bearings are greased.	AR33.20-W-0310-04A
			*739589004300
12	Fit thrust plate (3)
13	Tighten clamp nut (4) until all play is eliminated from tapered roller bearing seat	 When tightening, rotate wheel hub (1) and tap front wheel hub a few times with a rubber mallet in a crosswise pattern.
			*739589001300
			*BA33.20-N-1002-01B
14	Adjust wheel bearing play		AR33.20-W-0310-13A
			*BE33.20-N-1001-01B
			*363589022100
			*001589532100
			*739589001300
15	Tighten cylinder head bolt (2) and screw on clamp nut (4) until tight		*BA33.20-N-1003-01B
16	Recheck wheel bearing play and adjust if necessary		AR33.20-W-0310-13A
17	Attach cover (6)	 Use the cover (6), seal (5) and bolts (7) included in the wheel hub kit.
			*BA33.20-N-1004-01B
18	Install brake carrier with brake caliper		AR42.10-W-0600A
19	Install brake linings		AR42.10-W-0170A
20	Install ABS sensor		AR42.30-W-0150A
21	Mount wheels		AR40.10-W-1100A

Test values for wheel hub

Number	Designation		Front axle 739.5


BE33.20-N-1001-01B	Wheel bearing play at front axle	mm	0.02...0.04

 Wheel location, hub

Number	Designation			Front axle 739.3/5/9


BA33.20-N-1002-01B	Clamp nut at steering knuckle	M451.5	Nm	240
BA33.20-N-1003-01B	Bolt at clamping nut		Nm	65
BA33.20-N-1004-01B	Bolt, cover to wheel hub	M8	Nm	35
		M10	Nm	45
		M121.5	Nm	85

363 589 02 21 00

001 589 53 21 00

739 589 00 13 00

739 589 00 43 00

Dial indicator holder

Pulling and installing device

Wrench socket

Dial indicator

Parts ordering notes

Part no.	Designation	Quantity
A 943 330 00 25 05	Wheel hub kit for one axle complete with brake disks; Axle model 739.500/510/520	1
A 943 330 01 25 05	Wheel hub kit for one axle complete with brake disks; Axle model 749.108 (trailing axle)	1
A 943 330 02 25 05	Wheel hub kit for one axle complete with brake disks; axle model 739.550	1