Test brake system with pressure tester for leaks - AR42.10-P-0015GG

MODEL 460, 461 

MODEL 463 (except 463.270 /271) except CODE (979) Special protection version 

Fig 1: Identifying Brake Pedal Jack And Pressure Tester

Courtesy of MERCEDES-BENZ USA

	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
	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
1	Remove front left wheel
	Remove/install wheels, rotate if necessary		AP40.10-P-4050G
2	Remove bleed screw on front left brake caliper and connect pressure tester (051)	Pressure testers for hydraulic fluid systems must not be used for systems with brake fluid, otherwise brake fluid may be mixed with mineral oil which may cause the brakes to fail.
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Notes on externally invisible brake fluid loss		AH42.10-P-9406-02A
3	Bleed pressure tester (051).
	High-pressure test
4	Start engine and let it run for 10 s at medium engine speed
5	With the engine running, depress brake pedal as far as possible using the brake pedal jack (080).	The pressure loss during the test duration of 5 minutes must not exceed 5 % of the regulated value. If the pressure drop is greater, the brake system may malfunction!
			Fig 2
	Low-pressure testing
6	Switch off engine and keep pressing brake pedal until the vacuum is reduced.
7	Turn back brake pedal winch (080) until a line pressure of approx. 3 bar overpressure is indicated on the pressure gauge	The line pressure must not fall throughout the duration of the test (2 minutes).
			Fig 2
8	Remove brake pedal jack (080)
9	Detach pressure tester (051) and fit bleed screw onto front left brake caliper
10	Bleed front left brake caliper		AR42.10-P-0010GG

Fig 2: Identifying Brake Pedal Jack (000 589 18 31 00)

Courtesy of MERCEDES-BENZ USA