Detach/attach torque converter on driver - AR27.20-P-0100-01A

TORQUE CONVERTER

Number	Designation				Transmission 722.9
BA27.20-P-1001-01C	Oil drain screw to torque converter		M8	Nm	10
BA27.20-P-1001-01C	Oil drain screw to torque converter		M10	Nm	15
BA27.20-P-1002-01C	Bolt, torque converter to drive plate	Straight threaded connection		Nm	42
		Angled threaded connection	Stage 1	Nm	4
			Stage 2	Nm	30
			Stage 3	∠ °	90

Fig 1: Identifying Wrench Socket (001 589 65 09 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Long Wedge (115 589 03 59 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Detaching

To unscrew and screw in do not use an impact wrench or compressed-air tool, otherwise the threaded unions in the driven plate will be damaged.

Remove cover (8).
Unscrew bolts (1 to 6) of the torque converter from the driven plate (7).
Continue turning the engine in the direction of engine rotation using socket on the crankshaft center bolt. If the center bolt is not accessible, continue turning the torque converter using a wide screwdriver.

Fig 3: Identifying Torque Converter Bolts At Driven Plate
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Checking

Check driven plate (7) for damage.
If the threaded unions (7a) are damaged or loose, the driven plate (7) must be replaced.

Fig 4: Identifying Driven Plate Threaded Unions
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Attaching

TIGHTENING SEQUENCE

Tightening sequence	Bolt	stage
1	Press the torque converter (9) against the driven plate (7)using a long wedge
2	Attach the bolts (1 to 6) and position by hand
3	Tighten bolts (1, 2) and while tightening press the torque converter (9) against the driven plate (7) with a long wedge	Stage 1
4	Tighten bolts (3 to 6)	Stage 1
5	Tighten bolts (1 to 6)	Stage 2
6	Tighten bolts (1 to 6)	Stage 3