Front axle wheel hubs - renew grease, check tapered roller bearing · ap3320b3350h · Mercedes-Benz WIS

AP33.20-B-3350H

Front axle wheel hubs - renew grease, check tapered roller bearing

15.06.2020

Front axle

739.308/312 in model 382.068/069/070/073/081/083/084/085/087

Modification notes

28.05.2019	Wheel hub grease (per hub)	BF33.20-B-1001-01A
28.05.2019	Hubcap grease	BF33.20-B-1002-01A
22.05.2020	Nuts with integrated washer - centering in the wheel hub	BA40.10-B-1001-03A

B33.20-0018-01

	Remove
1	Activate parking brake and loose securing nuts from front wheels
2	Lift vehicle and support it on racks located under the front axle beam	 Racks should not support in the axle central part.
3	Remove the front wheels
4	Remove the wheel hub
		Front axles 739.308/312	AR33.20-B-0310E
5	Disassemble the wheel hub
		Front axles 739.308/312	AR33.20-B-0320E
	Clean
6	Remove the used grease from wheel hub (1) and the tapered roller bearings (2, 3)	 Do not use solvents to remove the grease and clean the bearings and the wheel hub. For cleaning, use a clean and lint-free cloth.
	Check
7	Check the tapered roller bearings (2, 3) for wear or damage	 In case of wear or damage in any of the bearings - either internal or external - or their races, they should be replaced always in pairs. If necessary, replace tapered bearings with separated invoice.
	Install
8	Assemble wheel hub (1)
		Front axles 739.308/312	AR33.20-B-0320E
		 Grease the conic bearings. Put specified grease quantity in wheels hubs and hubcaps.
		 Install a news radial seal.
		 Wheel hub grease (per hub)	*BF33.20-B-1001-01A
		 Hubcap grease	*BF33.20-B-1002-01A
9	Install the wheel hub
			AR33.20-B-0310E
10	Install the front wheels
11	Lower vehicle from rack and tighten front wheels security nuts	 Retighten securing nuts after first 50 to 100 km.
		 Nuts with integrated washer - centering in the wheel hub	*BA40.10-B-1001-03A
		 Nuts with ball washer - centering with washer	*BA40.10-B-1002-03A

 Disc wheels

Number	Designation			Type 382, 384, 634
BA40.10-B-1001-03A	Nuts with integrated washer - centering in the wheel hub	M18x1.5	Nm	-
		M22x1.5	Nm	600

 Disc wheels

Number	Designation			Type 382, 384, 634
BA40.10-B-1002-03A	Nuts with ball washer - centering with washer	M18x1.5	Nm	-
		M22x1.5	Nm	450

 Wheel hub, hub hubcap

Number	Designation				Front axle 739.3/4/5
BF33.20-B-1001-01A	Wheel hub grease (per hub)	Filling volume		gramas	180
		Class	Specification (except Brazil)		MB 267.1
			Specification (Brazil)		Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes.

 Wheel hub, hub hubcap

Number	Designation				Front axle 739.3/4/5
BF33.20-B-1002-01A	Hubcap grease	Replenishment quantity		gramas	40
		Class	Specification (except Brazil)		MB 267.1
			Specification (Brazil)		Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes.

Front axle wheel hubs - renew grease, check tapered roller bearing