Front axle wheel hubs - renew grease, check tapered roller bearing · ap3320t3350a · Mercedes-Benz WIS

AP33.20-T-3350A

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

23.1.06

Front axle 733.406 in modelNMB671

T33.20-0009-06

2 Radial sealing ring

3 Radial sealing ring

4 Inner tapered roller bearing

6 Front wheel hub

7 Outer tapered roller bearing

12 Cover

	Removing
1	Operate parking brake
2	Loosen the wheel nuts on the front wheels slightly
3	Jack up vehicle at front axle and support on stands
	Raise/support vehicle at front axle		AR00.60-T-1000-02A
			*WE58.40-Z-1003-05A
4	Remove wheels
	Remove/install wheels		AR40.10-T-1100A
5	Remove front wheel hub (6)
	Remove/install front wheel hub		AR33.20-T-0310A
6	Remove grease from the front wheel hubs (6)
7	Clean the front wheel hubs (6), inner tapered roller bearings (4) as well as outer tapered roller bearings (7)
	Checking
8	Clean inner tapered roller bearings (4), outer tapered roller bearings (7) and check bearing races for condition and wear	 Only replace worn or damaged tapered roller bearings in pairs subject to a separate repair order.
	Install
9	Grease inner tapered roller bearings (4) and outer tapered roller bearings (7) thoroughly
10	Pack front wheel hubs (6) as well as cover (12) with specified grease quantity		*BF33.20-N-1001-01D
11	Install front wheel hubs (6)	 Renew radial sealing rings (2, 3).
	Remove/install front wheel hub		AR33.20-T-0310A
12	Install wheels
	Remove/install wheels		AR40.10-T-1100A
13	Lower vehicle
14	Tighten wheel nuts	 Model 671 with Trilex wheels	*BA40.10-N-1001-02B
		 Model 671 with disk wheels	*BA40.10-N-1001-03B
			*000589392100
15	Push down brake pedal several times

 Disk wheels

 Trilex wheels

Number	Designation			Model 671


BA40.10-N-1001-02B	Trilex wheels	Trilex rim to wheel rim or wheel spider	Nm	300
		Wheel rim to wheel hub	Nm	450

 Wheel hub, cap

Number	Designation			Front axle 733.406


BF33.20-N-1001-01D	Multipurpose grease	Filling capacity per wheel hub	g	180
		Specifications for Operating Fluids	Sheet	BB00.40-P-0267-00A

Torque wrench

000 589 39 21 00

Workshop equipment

WE58.40-Z-1003-05A

Crossmember for pit lift and vehicle jack

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