(Adjust Wheel Bearing Play - AR33.20-P-0300GG)

Model 460

Model 461 (except 461.331)

Model 463 (except 463.270/271)

up to model year 2013

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
1	Remove front wheel
	Remove/install wheels, rotate if necessary	Model 460, 461, 463	AP40.10-P-4050G
2	Press back brake pads (1)
	Check
3	Check wheel bearing play with dial gauge	In the case of bearings which have run in service, aim for a wheel bearing play of 0.03 mm.
		Permissible wheel bearing play	*BE33.20-P-1001-01C
		Dial Gauge	Fig 4
		Dial indicator holder	Fig 5
4	Pull off the grease cap (2)	Removal and installation tool	Fig 1
5	Unlock outer slotted nut
6	Mount retainer wrench	Retainer wrench	Fig 7
7	Unscrew outer slotted nut	Use claw wrench to match the type of nut installed (chamfered on one, on both sides).
		Claw wrench	Fig 6
		Claw-type wrench	Fig 3
		Except Model 460 Claw-type wrench	Fig 2
8	Remove locking plate
9	Loosen inner slotted nut	Use claw wrench to match the type of nut installed (chamfered on one, on both sides).
		Claw wrench	Fig 6
		Claw-type wrench	Fig 3
		Except Model 460 Claw-type wrench	Fig 2
10	Tighten inner slotted nut	Initial torque 200 Nm. While tightening the wheel hub, crank at least 3 times continually, in the process strike the wheel hub in a crosswise pattern using a rubber hammer. (This settles and positions the bearing rollers)
11	Release inner slotted nut and tighten again until it makes zero-clearance contact with the pressure plate
12	Loosen inner slotted nut Approx.. 45°, until Approx.. 0.1 mm play is present
13	Mount locking plate
14	Coat outer slotted nut with MB-multipurpose grease and tighten	The beveling on the slotted nuts must point toward the locking tab side.
		Outer slotted nut to wheel hub Outer slotted nut to wheel hub	*BA33.20-P-1007-01C
		MB multipurpose grease, 400 g	*BR00.45-Z-1017-06A
	Check
15	Check wheel bearing play	Permissible wheel bearing play	*BE33.20-P-1001-01C
16	Secure outer slotted nut
17	Pack grease cap (2) with MB-multipurpose grease	MB multipurpose grease, 400 g	*BR00.45-Z-1017-06A
18	Install grease cap (2)	Removal and installation tool	Fig 1
	Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work.	Before starting the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system.	AS42.50-Z-0002-01A
19	Operate brake pedal several times	Firm resistance should be noticeable at the brake pedal.
20	Mount front wheel
	Remove/install wheels, rotate if necessary	Model 460, 461, 463	AP40.10-P-4050G