Remove/Install Front Axle Brake Caliper - AR42.10-P-0070MFA

Model 118 (except 118.351/353/354/651/653/654), 177 (except 177.051/053/054/151/951), 243, 247 (except 247.651/751/753/754) 

1-piston floating caliper brake 

Shown on model 177.0 on 1-piston floating caliper brake 

Fig 1: Front Axle 1-Piston Brake Caliper Components Location - Model 247 Except 247.651/751/753/754 (Shown On Model 177.0)

Courtesy of MERCEDES-BENZ USA

	Risk of injury.  Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	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	Notes on externally invisible brake fluid loss		AH42.10-P-9406-02A
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Brake fluid notes		AH42.50-P-0001-01A
Notice	Notes on repairs to brake system		AH42.00-P-0003-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	Notes on installing brake wear indicator contact sensors		AH42.10-P-0003-01CW
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove/install
1	Remove brakepads.		AR42.10-P-1610MFA
		: Brake paste or other lubricants must not be applied to the brakepads.
2	Remove brake hose (6) from brake caliper (1) and seal exposed connections using suitable stop plugs.		AR42.10-P-0013MFA
		Replace brake hoses. Brake hoses are always replaced after removal.
		Record plug	Fig 2
3	Unscrew screws (7) and remove brake caliper (1).	: Do not damage electrical line of right front brakepad wear sensor (S10/2). Otherwise, function of the right front brakepad wear sensor (S10/2) is not guaranteed.
		Bolt, guide pin to brake caliper	*BA42.10-P-1002-10ZA
	Check
4	Check brake caliper (1) for damage.	If the brake caliper (1) is damaged: ↓ Replace brake caliper (1).
5	Check dust boot at brake piston for damage.	If the dust boot is damaged: ↓ Replace brake caliper (1).
6	Install in the reverse order.
	Concluding tasks
7	Bleed brake system.		AR42.10-P-0010MFA
	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
8	Operate brake pedal several times until the brakepads contact the brake disks.	Firm resistance should be noticeable at the brake pedal.
	Risk of death  caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand	Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY OFF switch to shut down test stand.	AS42.00-Z-0001-01A
9	Perform brake test on test stand.
		Model 243	AP42.00-P-4290EQ
		Model 118 (except 118.351/353/354/651/653/654), 177 (except 177.051/053/054/151/951), 247 (except 247.651/751/753/754) 1-piston floating caliper brake	AP42.00-P-4290BA

Fig 2: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA