Remove/install rear-axle brake caliper

AR42.10-P-0080AA

31.01.2018

Model	461
	with disk brakes on the rear axle
Model	463 (except 463.234/270/271)
	up to model year 2013
	except code 979 (Special protection MB Guard)
	with disk brakes on the rear axle

1	Brake hose
2	Brake caliper
3	Microencapsulated guide pins

P42.10-2016-11

4	Brake piston
5	Dust cap
6	Caliper support

P42.10-2156-11

 Caution	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
 Warning	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
Topical note	Brake fluid notes		AH42.50-P-0001-01A
Topical note	Notes on repairs to brake system		AH42.00-P-0003-01A
 	Remove/install
1	Detach complete wheel
			AP40.10-P-4050G
2	Remove brake hose (1) from brake caliper (2)	 Brake hose to rear axle floating caliper	*BA42.10-P-1005-04B
		 Torque wrench	*001589722100
		 Box wrench bit	*000589750300
3	Seal exposed connections with plugs	 To prevent the brake fluid reservoir from emptying.
		 Record plug	*129589009100
4	Detach brake caliper (2) from brake caliper support (6)	 Installation: Replace microencapsulated guide pins (3).
		 Bolt, pilot bushing/guide pin to brake caliper support	*BA42.10-P-1002-17B
5	Remove contact sensor from brake wear indicator	If installed.
		 Self-locking bolt, brake wear contact sensor to floating caliper	*BA42.10-P-1004-17B
6	Push back brake piston (4) with pusher tool and collect brake fluid in a suitable container	 Resetting device	*000589524300
7	Clean brake caliper (2)	 Brake caliper brush	*000589266800
	Check
8	Check brake caliper (2) for brake fluid escaping from the brake piston (4)	If there are problems
		
		Replace brake caliper (2)
9	Check dust cap (5) for damage	If there are problems
		
		Replace dust cap (5)
10	Install in the reverse order
11	Bleed brake system		AR42.10-P-0010GG
 Danger	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
12	Press brake pedal several times and check brake system for leak tightness		AR42.10-P-0100-01A
		 Firm resistance should be noticeable at the brake pedal.
13	Check fluid level in the brake fluid reservoir, correct if necessary
			AP42.50-P-4210G

 Rear axle floating caliper

Number	Designation		Model 461 Model 463 (except 463.270/271/272/273) up to model year 2019	Model 463.270/271/272/273 up to model year 2019
BA42.10-P-1002-17B	Bolt, pilot bushing/guide pin to brake caliper support	Nm	30	28

 Rear axle floating caliper

Number	Designation		Model 463 as of model year 2019
BA42.10-P-1002-17B	Bolt, pilot bushing/guide pin to brake caliper support	Nm	35

 Rear axle floating caliper

Number	Designation		Model 461 Model 463 (except 463.270/271/272/273) up to model year 2019	Model 463.270/271/272/273 up to model year 2019
BA42.10-P-1004-17B	Self-locking bolt, brake wear contact sensor to floating caliper	Nm	30	8

 Rear axle floating caliper

Number	Designation		Model 463 as of model year 2019
BA42.10-P-1004-17B	Self-locking bolt, brake wear contact sensor to floating caliper	Nm	8

 Brake lines, brake hoses

Number	Designation		Model 461	Model 463 (except 463.236/248/270/271/272/273) up to model year 2019, model 463.236/248 except code 979 up to model year 2019
BA42.10-P-1005-04B	Brake hose to rear axle floating caliper	Nm	18	18

 Brake lines, brake hoses

Number	Designation		Model 463.272/273 up to model year 2019	Model 463 as of model year 2019
BA42.10-P-1005-04B	Brake hose to rear axle floating caliper	Nm	24	-

000 589 26 68 00

Brake caliper brush

000 589 52 43 00

Resetting device

001 589 72 21 00

Torque wrench

000 589 75 03 00

Box wrench bit

129 589 00 91 00

Record plug

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