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

TRANSMISSION 722.9 (except 722.93) For special angle of the torque converter 

TRANSMISSION 722.9 For special angle of the torque converter 

TORQUE CONVERTER

Number Designation       Transmission 722.9
BA27.20-P-1002-01C Bolt, torque converter to drive plate Straight threaded connection M8 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)
G07540004Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Long Wedge (115 589 03 59 00)
G07540005Courtesy of MERCEDES-BENZ USA

Detaching 

Fig 3: Identifying Cover
G07202316Courtesy of MERCEDES-BENZ USA

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

  1. Remove cover (8).
  2. Remove bolts (1 to 4 or 1 to 6) of the torque converter from the driven plate.

    IMPORTANT Continue turning the engine in the direction of engine rotation using SPECIAL TOOL socket on the crankshaft center bolt. If the center bolt is not accessible, continue turning the torque converter using a wide screwdriver.

    Checking 

  3. INSPECT Check driven plate (7) for damage.

    IMPORTANT The driven plate (7) must be replaced if the threaded unions (7a) are damaged or loose.

    Attaching 

  4. Mount torque converter (9) on driven plate (7).

    IMPORTANT Replace bolts (1 to 4 or 1 to 6).

    NOTES Observe tightening sequence, tightening torque and numerical sequence, otherwise the torque converter (9) or the driven plate (7) will be damaged.

Fig 4: Identifying Driven Plate And Threaded Unions
G07202317Courtesy of MERCEDES-BENZ USA

Torque converter with 4-x angled threaded connection 

Torque converter with 6-x angled threaded connection 

Fig 5: Identifying Torque Converter With 4-X And 6-X Angled Threaded Connection
G07540008SPECIAL TOOLSPECIAL TOOLSPECIAL TOOLCourtesy of MERCEDES-BENZ USA
TIGHTENING SEQUENCE

Tightening sequence Screw stage
1 Press the torque converter (9) against the driven plate (7) using a long wedge SPECIAL TOOL  
2.1 Attach the bolts (1 to 6) and position by hand Torque converter with 6-x angled threaded connection
2.2 Partially screw in bolts (1 to 4) and position by hand Torque converter with 4-x angled threaded connection
3.1 Tighten bolts (1, 2) and while tightening press the torque converter (9) against the driven plate (7) with a SPECIAL TOOL long wedge 1st stage with torque converter with 6-x angled threaded connection
3.2 Tighten bolts (1) and press the torque converter (9) while tightening up against the driven plate (7) using a SPECIAL TOOL long wedge 1st stage with torque converter with 4-x angled threaded connection
4.1 Tighten bolts (3 to 6) 1st stage with torque converter with 6-x angled threaded connection
4.2 Tighten bolts (2 to 4) 1st stage with torque converter with 4-x angled threaded connection
5.1 Tighten bolts (1 to 6) 2nd stage with torque converter with 6-x angled threaded connection
5.2 Tighten bolts (1 to 4) 2nd stage with torque converter with 4-x angled threaded connection
6.1 Tighten bolts (1 to 6) 3rd stage with torque converter with 6-x angled threaded connection
6.2 Tighten bolts (1 to 4) 3rd stage with torque converter with 4-x angled threaded connection