Replacing and installing brake pads - AR42.10-P-0170GWV

MODEL 463 as of model year 2013 except CODE ZQ0 (G 500 4x42); brake pads on front axle

Shown on MODEL 463 as of model year 2013

Fig 1: Brake Pads Remove/Install Components - Shown On Model 463 As Of Model Year 2013

Courtesy of MERCEDES-BENZ USA

Shown on MODEL 463 as of model year 2016

Fig 2: Brake Pads Remove/Install Components - Shown On Model 463 As Of Model Year 2016

Courtesy of MERCEDES-BENZ USA

	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
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Remove/install
1	Open engine hood		AR88.40-P-1000GG
2	Unscrew cap of brake fluid reservoir and extract some brake fluid	In order to prevent the brake fluid reservoir from overflowing when pressing back the brake pistons.
3	Remove wheel-and-tire assembly
			AP40.10-P-4050G
4	Disconnect front brake wear sensor (8) from electrical connection for front brake wear sensor (9)
5	Pull front brake wear sensor (8) out of holder on spring steel sheet (3)	Model 463 as of model year 2013 up to model year 2016 except code ZQ0 (G 500 4x42); brake pads on front axle
6	Carefully pull front brake wear sensor (8) out of brake lining (5)	Replace the defective or seized front brake wear sensor (8).
7	Remove screw/bolt (1) and take off support (2) of spring steel sheet (3)	Bolt for anti-rattle spring support	*BA42.10-P-1006-02B
8	Place electrical connection for front brake wear sensor (9) to one side	Model 463 as of model year 2016 except code ZQ0 (G 500 4x42); brake pads on front axle
9	Knock out retaining pins (4) using a drift	Model 463 as of model year 2013 up to model year 2016 except code ZQ0 (G 500 4x42); brake pads on front axle It must be ensured that the retaining pins (4) are seated correctly. Replace the retaining pins (4) if necessary.
10	Remove spring steel sheet (3)
11	Remove brake linings (5) from brake caliper (7)	Only complete sets of brake linings (5) approved by Mercedes-Benz may be installed. Do not apply brake paste or lubricants to the brake linings (3) and brake calipers (1).
	Check
12	Check that spring steel sheet (3) and support (2) are not damaged and are in good condition	If complaint present ↓ Replace spring steel sheet (3) and/or support (2)
13	Check brake linings (5) for wear and that they are in good condition
			AP42.10-P-4251G
		Replace the brake linings (5) as a complete set only. In event of damage or excessive wear ↓ Replace brake linings (5)
14	Check brake disks (6) for wear and that they are in good condition
			AP42.10-P-4251G
		Replace the brake disks (6) as a complete set only. In event of damage or excessive wear ↓ Replace brake disks (6)
			AR42.10-P-0220GW
15	Check brake caliper (7) and dust boots of brake piston for leaktightness and damage	If complaint present ↓ Replace brake caliper (7)
15			AR42.10-P-0070GW
16	Press back brake piston using resetting device	Secure remaining brake pistons using two wedges against slipping out.
		Resetting device	Figure
		Wedge	Figure
		With sluggish brake pistons ↓ Replace brake caliper (7)
			AR42.10-P-0070GW
	Clean
17	Clean contact surfaces of brake linings (5) in brake caliper (7)	While doing so, do not damage the dust boots on the brake piston. Do not use sharp-edged or pointy tools. Otherwise the brake caliper (2) will be damaged.
17		Cleaner	*BR00.45-Z-1025-04A
18	Install in the reverse order
19	Depress brake pedal several times until brake linings (5) make contact with brake disks (6) and a firm resistance is noticeable
	Check
20	Correct fluid level in brake fluid reservoir
			AP42.50-P-4210G
21	Carry out brake test on the test stand