Remove/Install Front Axle Brake Disc - AR42.10-P-0230GWX

Model 463.234 

up to model year 2019 

with code ZQ0 (G 500 4x42) 

Model 463.255 

up to model year 2019 

with code MUK2 (USA or Canada vehicle model designation) 

with code ZQ0 (G 500 4x42) 

Model 463.274 

up to model year 2019 

with code LQ0 (G650 Landaulet) 

Fig 1: Front Axle brake disc Components Location - Model 463.255 Up To Model Year 2019 With Code ZQ0

Courtesy of MERCEDES-BENZ USA

	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
	Risk of poisoning  from swallowing brake fluid. Risk of injury  from skin and eye contact with brake fluid	Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.	AS42.50-Z-0001-01A
	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
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Brake fluid notes		AH42.50-P-0001-01A
	Remove/install
1	Remove brake caliper (1) with brake linings on front axle, and fasten with attached lines free of tension to the vehicle		AR42.10-P-0070GWX
		Do not tension or kink brake hose. Otherwise the brake hose will be damaged.
2	Unscrew safety screw (3) and remove brake disc (2)	The safety screw (3) must be replaced.
		Safety screw, brake disc to wheel hub	*BA42.10-P-1001-06B
	Clean
3	Clean contact surface and interference fit of brake disc (2)
4	Lightly grease interference fit of brake disc (2)	Paste, hot lubrication 1 kg, DBL 6879.20	*BR00.45-Z-1005-06A
5	Install in the reverse order