SBC function brake application in the event of system fault - GF42.46-P-3000T

MODEL 211 up to 31.5.06

except CODE (494) USA version

except CODE (498) Japan version

MODEL 211 up to 30.6.06

with CODE (494) USA version

with CODE (498) Japan version

Display in the event of a system malfunction

Fig 1: SBC Function Brake Application Function Diagram In Event Of System Fault

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Display in the event of a system malfunction

Function

If faults occur in the system, the front axle brake circuit is braked hydraulically by the brake pedal. This process takes place without brake servo assistance.

The left front separation valve (A7/3y1) and right front separation valve remains open (A7/3y2) in the event of a fault.

The pressure is increased in the tandem master brake cylinder of the operating unit (1) by the brake pedal.

The spring assembly in the pedal pressure simulator (2) is compressed first.

Afterwards the pressure builds up further and is lead directly to the right front brake caliper (5a) and left front brake caliper (5b) of the front wheel brakes. The left front dividing piston (7) and right front dividing piston (8) prevents the brake fluid from flowing back and thus enables the pressure buildup.

SBC normal braking, function		GF42.46-P-1000T
SBC additional functions, function	up to 31.5.04	GF42.46-P-2000T
	Model 211.004/006/016/023/026/028/042/043/056/061/065/070/076/206/216/223/226/242/243/256/261/265/270/276/606/616
	up to 30.11.04
	Model 211.080/082/083/087/280/282/283
SBC additional functions, function	as of 1.12.04 up to 31.5.06	GF42.46-P-2000TA
	Model 211.004/006/016/023/026/028/042/043/056/061/065/070/076/206/216/223/226/242/243/256/261/265/270/276/606/616 as of 1.6.04 up to 31.5.06
	except code (494) USA version
	except code (498) Japanese version
	As of 1.12.04 up to 31.5.06
	Model 211.080/082/083/087/280/282/283
	except code (494) USA version
	except code (498) Japanese version
	as of 1.6.04 up to 30.6.06
	Models 211.004/006/016/023/026/028/042/043/056/061/065/070/076/206/216/223/226/242/243/256/261/265/270/276/606/616
	with code (494) USA version
	with code (498) Japanese version
	As of 1.12.04 up to 30.6.06
	Model 211.080/082/083/087/280/282/283
	with code (494) USA version
	with CODE (498) Japanese version
Stop lamp switch. location/task/function		GF42.10-P-4000A
SBC pedal value sensor, location/task/design/function		GF42.46-P-4210SL
Traction systems hydraulic unit, location/task/design/function		GF42.50-P-4000S