Front axle wheel hubs - renew grease, check tapered roller bearing · ap3320b3350j · Mercedes-Benz WIS

AP33.20-B-3350J

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

15.06.2020

Front axle	732 in model 979.013/016/046/048/073/076/078
Front axle	732 in model 979.270/272/276/277/279

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

1	Hub cap
2	Tightening nut
3	Bolt
4	Thrust washer
5	Outer tapered roller bearing
6	Wheel hub
7	Inner tapered roller bearing
8	Radial seal
9	Axle sleeve
10	Calipers bridge
11	Bolt

B33.20-0037-06

	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	 The safety stands must not be placed in the center area of the axle.
3	Remove the front wheels
			AR40.10-B-1100E
4	Remove the wheel hubs (6)
			AR33.20-B-0310G
5	Disassemble the hubs from the wheels (6)
			AR33.20-B-0320H
	Clean
6	Remove the grease used on wheel hub (6) and tapered bearings (5, 7)	 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 bearings (5, 7) for wear or damage	 If there is wear or damage on the bearing races, inner or outer, these will have to be always replaced in pairs.
		 If necessary, replace tapered bearings with separated invoice.
	Install
8	Assemble the wheels hubs (6)
			AR33.20-B-0320H
		 Grease the conic bearings. Put specified grease quantity in wheels hubs and hubcaps.
		 Install a news radial seal.
		 Front axles 732.560/561/562Wheel hub grease (per hub)	*BF33.20-B-1001-01A
		 Front axles 732.560/561/562Hubcap grease	*BF33.20-B-1002-01A
9	Install the wheels hubs (6)
			AR33.20-B-0310G
10	Install the front wheels
			AR40.10-B-1100E
11	Lower vehicle from rack and tighten 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

 Disc wheels

Number	Designation			Model 979
BA40.10-B-1001-03A	Nuts with integrated washer - centering in the wheel hub	M18x1.5	Nm	320
		M22x1.5	Nm	-

 Wheel hub, hub hubcap

Number	Designation				Front axle 732.560/561	Front axle 732.562
BF33.20-B-1001-01A	Wheel hub grease (per hub)	Filling volume		gramas	150	150
		Class	Specification (except Brazil)		MB 267.1	MB 267.1
			Specification (Brazil)		Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes.	Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes.

 Wheel hub, hub hubcap

Number	Designation				Front axle 732.560/561	Front axle 732.562
BF33.20-B-1002-01A	Hubcap grease	Replenishment quantity		gramas	40	40
		Class	Specification (except Brazil)		MB 267.1	MB 267.1
			Specification (Brazil)		Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes.	Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes.

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