REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz C-Class (W203, 2000 issue)

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Mercedes-Benz
	W203
		Introduction
		Instruction Manual
		Routine maintenance
		Engine
		Cooling and heating
		The power supply system and release
		Electric motor
		Manual gearbox
		Automatic Transmission
			Specifications
			Automated Manual gearshift 716.6
				Elements of the hydraulic control of the automated CPR Sequentronic
				Elements of electronic control signals and the control unit of the automated CPR Sequentronic
			Automatic Transmission 722.6
		Coupling and power shafts
		Brakes
		Suspension and steering
		Body
		Onboard electric

printable version

Automated Manual gearshift 716.6

Hinged elements of the automated CPR ?�Sequentronic?�


1 - cover the ventilation 2 - ventilation valve 3 - Battery 4 - Lever clutch 5 - sealing plugs 6 - The front transaxle 7 - switch gear recognition	8 - speed sensor 9 - holder sensor detection gear 10 - Carter CAT 11 - Pump 12 - Tank 13 - Hydraulic unit

Elements of the hydraulic drive clutch control and shift automated PPC ?�Sequentronic?�

The hydraulic control unit is an automated PPC (Sequentronic)


2 - The valve assembly 2a - Connector pressure line 2b - Connector return line 2c - Oil Filter 2d - Connector clutch pressure line 3 - Executive cylinder	Y90 - Solenoid valve clutch of the automatic gearshift Y91 - Solenoid valve brake automated PPC with built-reducing valve Y92 / 1 - the shift solenoid 1, 3, 5 Y92 / 2 - shift solenoid R, 2, 4, 6

Hydraulic Pump automated PPC Sequentronic


4 - The electric motor 4a - gear pump 4b - Maslozaborny connector	4c - Connector pressure line M46 - Hydraulic pump Sequentronic [ASG]

Clutch Sequentronic


13a - housing 13b - Thrust ring 13c - Balls 13d - Protective Case 13th - Spring preload 13f - Sealing	13g - Working piston 13h - Coupling A - Position the clutch release B - basic position. Engaged B53 - clutch travel sensor

Operation of the clutch


0 - Return Channel liquid A - Central hydraulic clutch squeezing device A1 - Spring A2 - Working piston	B - The valve assembly I - Pressure Chamber I p - Hydraulic Pressure Y90 - clutch solenoid valve

The principle of operation of the hydraulic control unit

Oil supply to the solenoid valves

Pumping hydraulic oil pump (Pentosin) for steel line is fed into the valve assembly (2) is pumped through the oil filter (2c) and through the check valve is supplied to the solenoid valves clutch (Y90), switching (Y92 / 1 and Y92 / 2) and inhibition (Y91)

CLUTCH

Activation of the clutch solenoid valve (Y90) is carried out by a team from the transmission control unit (N15 / 6) and supplies of oil pressure line connected to the connector (2d) in the clutch actuator assembly.

Shift Control

Depending on the current traffic conditions control unit (N15 / 6) produces the activation of the corresponding shift solenoid (Y92 / 1 or Y92 / 2) valve assembly. Activated valve supplies hydraulic pressure switching cylinder acting on the central shaft provides switching and selection of the desired transmission by the respective connecting elements in the transmission.

The principle of operation of the hydraulic pump

The electric motor (4) is activated by the command control unit (N15 / 6) and provides the drive connected to the clutch gear pump (4a).

The rotation of the gears ensures absorption of the working fluid (oil) through the inlet connector (4b), its compression and supply under pressure through a slot (4c).

The pump provides pumping oil in the receiver system pressure.

The principle of operation of the clutch

Working piston (13g) under the pressure of hydraulic pressure in the clutch is shifted forward (13h). Thrust ring (13b) presses the disc spring and activates the clutch.

The inner seal is ensured by the seal (13f).

Protective cover (13d) protects the surface of the moving clutch squeezing device from dirt. Preload spring (13e) minimizes the initial drive load release bearing in order to reduce background noise.

When the clutch disengaged

The control unit (N15 / 6) activates the solenoid valve (Y90) in the valve assembly (V) which supplies a hydraulic pressure (p) in the squeezing device (A). Working piston (A2) moves forward towards the disc spring. The thrust ring is pressed against the disc springs, providing its dehiscence.

When switched clutch

The valve (Y90) in the valve assembly (B) is not activated and the return spring keeps it in the basic position. As a result I the pressure chamber in the hydraulic clutch release device (A) is unloaded, that ensures the linkage with the discharge port of the oil tank (0).

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Elements of the hydraulic control of the automated CPR Sequentronic