Remove/install stepped tandem master brake cylinder - AR42.10-P-0310GG

MODEL 460, 461 

MODEL 463 without CODE 979 (Special protection version) 

Fig 1: Stepped Tandem Master Brake Cylinder Remove/Install Components

Courtesy of MERCEDES-BENZ USA

Shown on model 460, 461 

Fig 2: Stepped Tandem Master Brake Cylinder Remove/Install Components - Shown On Model 460, 461

Courtesy of MERCEDES-BENZ USA

	Remove/install
	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
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on externally invisible brake fluid loss		AH42.10-P-9406-02A
1	Switch off ignition	MODEL 461.305/333/340/343/392
2	Push down brake pedal several times	In order to reduce the vacuum in the brake booster (16).
3	Remove brake fluid reservoir (10)	Except model 463 without code 979 (Special protection version)	AR42.10-P-0301GG
		Replace sealing rings (9).
4	Detach expansion reservoir (30) of the differential lock operating mechanism from wheel well	MODEL 460, 461 (except 461.302/304/305/332/333/334/340/342/343/345/346/392) Loosen hose clamp (30a) and place expansion reservoir (30) to the side with line connected.
5	Unscrew brake lines (2, 3) from tandem master brake cylinder (1).	Brake pipe to master brake cylinder	*BA42.10-P-1003-04B
		Box wrench bit	Figure
		Torque wrench	Figure
6	Disconnect electrical connection from the traction system hydraulic unit (A7/3) and set aside	MODEL 461.305/333/340/343/392
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
		Do not touch, deform or damage contacts of connector and jack! Do not allow any foreign objects, dirt fluids to enter the jack or connector! Otherwise it may cause damage or malfunction.
7	Detach tandem master brake cylinder (1) from brake booster (16).	Removal:  Pull tandem master brake cylinder (1) out straight toward front. Otherwise, the push rod can be pushed out of its axial position and broken out of the retaining lugs on the controller. Always install new tandem master brake cylinder (1) if damaged. Replace seals (17) and nuts (19).
		Nut, master brake cylinder to brake booster	*BA42.10-P-1001-05B
8	Install in the reverse order
9	Bleed brake system	Except model 463.270/271	AR42.10-P-0010GG
		Model 463.270/271	AR42.10-P-0010GX
	Check
10	Check brake system for leaks		AR42.10-P-0100-01A

Fig 3: Identifying Torque Wrench Bit (001 589 75 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Box Wrench (000 589 75 03 00)

Courtesy of MERCEDES-BENZ USA