Remove/install master brake cylinder - AR42.10-P-0300SX

MODEL 216.### 1# 

MODEL 221.### 1# 

Fig 1: Identifying Master Brake Cylinder Remove/Install Components

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

1.9.10

"Perform brake test on test bench" reference changed

Test sequence augmented/revised

	Remove/install
	Risk of poisoning  caused by swallowing brake fluid. Risk of injury  caused by brake fluid coming into contact with skin and eyes.	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
	Notes on externally invisible brake fluid loss		AH42.10-P-9406-02V
1	Remove expansion reservoir (1)		AR42.10-P-0301SX
2	Mark brake lines (2) for corresponding connection
3	Detach brake lines (2) from master brake cylinder (3)	Seal brake lines (2) and connections on master brake cylinder (3) immediately in order to prevent the ingress of foreign objects.
			*BA42.10-P-1003-04K
			*129589009100
			*000589750300
4	Unscrew nuts (4) from brake booster (A7/7)		*BA42.10-P-1001-05J
5	Take out master brake cylinder (3)	The master brake cylinder (3) must not be tilted, but rather removed straight out the front of the brake booster (A7/7), as otherwise the thrust rod will be pushed out of its axial location. Installation:  Replace seal (6). Installation:  When inserting the master brake cylinder (3) pay attention to the correct seat of the pendulum support (5).
6	Install in the reverse order
7	Bleed brake system		AR42.10-P-0010SX
	Checking
	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 STOP switch to shut down test stand.	AS42.00-Z-0001-01A
8	Carry out brake test on the test stand		AP42.00-P-4290BA

BRAKE LINES, BRAKE HOSES

Number	Designation		Model 216 except 216.374/377/379	Model 216.374/377/379
BA42.10-P-1003-04K	Union nut, brake line to master brake cylinder	Nm	17	17

BRAKE LINES, BRAKE HOSES

Number	Designation		Model 221 except 221.074/077/174/177/179	Model 221.074/077/174/177/179
BA42.10-P-1003-04K	Union nut, brake line to master brake cylinder	Nm	17	17

MASTER BRAKE CYLINDER

Number	Designation		Model 216	Model 221
BA42.10-P-1001-05J	Nut, brake master cylinder to brake booster	Nm	25	25

Fig 2: Identifying Box Wrench Bit (000 589 75 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA