Removing, Checking And Installing Rear Axle Brake Pads - AR42.10-P-1700LF

Model 217, 222

Courtesy of MERCEDES-BENZ USA

Shown on MODEL 222 - right side of vehicle

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
Notice	Brake fluid notes		AH42.50-P-0001-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
Notice	Notes on repairs to brake system		AH42.00-P-0003-01A
	Notes on installing brake wear indicator contact sensors		AH42.10-P-0003-01CW
	Remove/install
1	Move brake pads (10) of the rear axle into assembly position	Do not depress the service brake during "Move to assembly position". Otherwise, the spindle in the brake caliper (3) can be damaged. The engine hood must be closed.	AR42.10-P-1700-02W
2	Switch off ignition and remove transmitter key
3	Remove cover over brake fluid expansion reservoir
	Clean
4	Clean area surrounding the cap of the brake fluid expansion reservoir	Assembly cleaner	*BR00.45-Z-1028-04A
5	Unscrew the cap on the brake fluid expansion reservoir and suction off some brake fluid	In order to prevent the brake fluid expansion reservoir overflowing when pressing back the brake pistons.
6	Detach corresponding complete wheel		AR40.10-P-1102A
7	Disconnect right rear brake wear sensor electrical connector (S10/4x1) from right rear brake wear sensor (S10/4)	When removing brake linings (10) on right side of vehicle
8	Detach electrical connection from left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2)
9	Remove bolt (1) from lower guide pin (5)	Counterhold lower guide pin (5) while doing so.
		Guide pin to brake caliper support or bolt for guide pin to brake caliper	*BA42.10-P-1004-12J
10	Swivel brake caliper (3) upwards	Do not detach brake hose (6). : Guide the right rear brake wear sensor (S10/4) through the opening of the brake caliper (3).
11	Remove brakepad (10) from brake caliper support (2)	: Only sets of brake linings (10) approved by Mercedes-Benz may be installed. Do not apply brake paste or lubricants to the brake pads (10) and brake calipers (3)!
12	Pull right rear brake lining wear sensor (S10/4) out of brake lining (10)	When removing brake linings (10) on right side of vehicle : Replace defective right rear brake lining wear sensor (S10/4).
13	Remove spring steel sheets (11) from brake caliper support (2)
	Checking, measuring
14	Check condition of brake linings (10)
		Model 217	AP42.10-P-4252C
		Model 222 If necessary: ↓ Replace brake linings (10).	AP42.10-P-4252HA
15	Check condition of brake disk (9) and gauge degree of wear
		Model 217 with code B07 (AMG - ceramic brake system)	AP42.10-P-4258CC
		Model 217 except code B07 (AMG - ceramic brake system)	AP42.10-P-4258C
		Model 222 with code B07 (AMG - ceramic brake system)	AP42.10-P-4258HC
		Model 222 except code B07 (AMG - ceramic brake system) If necessary: ↓ Replace brake disk (9).	AP42.10-P-4258HA
			AR42.10-P-0220LF
16	Check brake caliper (3) and dust boot (13) on brake piston for damage	If damage is present: ↓ Replace brake caliper (3).	AR42.10-P-0080LF
17	Check boots (12) for damage and correct seat	If damage is present: ↓ Replace brake caliper support (2).	AR42.10-P-0080LF
18	Check guide pin (5) for ease of movement	Replace brake caliper support (2) if damaged, see: ↓ Replace brake caliper (3).	AR42.10-P-0080LF
19	Press back brake piston using pusher tool (01)	Resetting device If the brake piston is difficult to move: ↓ Replace brake caliper (3).	Fig 1
			AR42.10-P-0080LF
	Clean
20	Clean contact surfaces of brake linings (10) or brake caliper (3) and on brake caliper support (2)	Do not use sharp-edged or pointed objects. The dust boots (13) can otherwise be damaged.
		Assembly cleaner	*BR00.45-Z-1028-04A
21	Install in the reverse order
	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
22	Depress brake pedal several times until brake pads (10) rest against brake disks (9)
	Check
23	Check fluid level in brake fluid expansion reservoir
			AP42.10-P-4210HA
24	Carry out brake test on the test stand
			AP42.00-P-4290BA