Front axle wheel hubs - renew grease, check tapered roller bearing · ap3320w3350a · Mercedes-Benz WIS

AP33.20-W-3350A

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

15.08.2013

FRONT AXLE	730.02 in MODEL 375.1, 970.0/2/6, 972.0, 974.2, 975.0/2, 976.0
	except wheel hub with compact bearing
FRONT AXLE	730.71 in MODEL 970.0/2, 972.0, 975.0, 976.0
	except wheel hub with compact bearing

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

Wheel hub with disk brake (example)

1	Radial sealing ring
2	Radial sealing ring
3	Inner tapered roller bearing
4	Wheel hub
5	Outer tapered roller bearing
6	Cover panel
7	Thrust plate
8	Cylinder head bolt
9	Clamp nut
10	Seal
11	Cover
12	Screw

N33.20-0343-06

	Remove
1	Take off front wheels
			AR40.10-W-1100A
		 Version with Trilex wheels: Loosen the clamping plates by applying light blows before removing the wheel nuts.
2	Remove left and right wheel hub (4)
		FRONT AXLE 730.024/025	AR33.20-W-0310C
		FRONT AXLE 730.713 ## as of 235957, 730.714 ## as of 235975	AR33.20-W-0310F
		FRONT AXLE 731.700	AR33.20-W-0310G
		FRONT AXLE 731.720	AR33.20-W-0310H
		FRONT AXLE 739.5 up to front-axle end number. F168310 with disk brake	AR33.20-W-0310A
		FRONT AXLE 739.41/5 with drum brake	AR33.20-W-0310D
		 Vehicles with compact bearing (identifiable by a flat cap (11) on wheel hub) are not serviced.
	Clean
3	Remove grease from wheel hub (4); clean wheel hub (4), inner tapered roller bearing (3) and outer tapered roller bearing (5)
	Check
4	Check condition and wear of inner tapered roller bearing (3), outer tapered roller bearing (5) and bearing races	 If the inner tapered roller bearing (3) or outer tapered roller bearing (5) is worn or damaged, they must always be replaced in pairs - subject to separate repair order.
	Install
5	Grease inner tapered roller bearing (3) and outer tapered roller bearing (5) well and fill wheel hubs (4) and caps (11) with specified quantity of grease	 Multipurpose grease	*BF33.20-N-1001-01B
6	Install wheel hubs (4)
		FRONT AXLE 730.024/25	AR33.20-W-0310C
		FRONT AXLE 730.713 ## up to 235957, 730.714 ## up to 235975	AR33.20-W-0310F
		FRONT AXLE 731.700	AR33.20-W-0310G
		FRONT AXLE 731.720	AR33.20-W-0310H
		FRONT AXLE 739.5 up to front-axle end number. F168310with disk brake	AR33.20-W-0310A
		FRONT AXLE 739.41/5 with drum brake	AR33.20-W-0310D
7	Mount wheels on front axle
			AR40.10-W-1100A
8	Push down brake pedal several times

 Wheel hub, hub cap

Number	Designation			FRONT AXLE 730.02	FRONT AXLE 730.71 (except 730.712), 730.72
BF33.20-N-1001-01B	Multipurpose grease	Capacity per wheel hub	g	130	100
		Sheet		BB00.40-P-0267-01A	BB00.40-P-0267-01A

 Wheel hub, hub cap

Number	Designation			FRONT AXLE 731.700	FRONT AXLE 731.720
BF33.20-N-1001-01B	Multipurpose grease	Capacity per wheel hub	g	150	200
		Sheet		BB00.40-P-0267-01A	BB00.40-P-0267-01A

 Wheel hub, hub cap

Number	Designation			FRONT AXLE 739.410	FRONT AXLE 739.411
BF33.20-N-1001-01B	Multipurpose grease	Capacity per wheel hub	g	165	180
		Sheet		BB00.40-P-0267-01A	BB00.40-P-0267-01A

 Wheel hub, hub cap

Number	Designation			FRONT AXLE 739.5
BF33.20-N-1001-01B	Multipurpose grease	Capacity per wheel hub	g	180
		Sheet		BB00.40-P-0267-01A

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

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