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Detach/attach transmission housing on torque converter housing - AR27.50-P-0601EWM

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TRANSMISSION 725.0 

MODIFICATION NOTES

16.6.14 Bolt, oil guide pipe to transmission housing   BA27.10-P-1013-04H
Fig 1: Transmission Housing On Torque Converter Housing Components (1 Of 2)
G09975767Courtesy of MERCEDES-BENZ USA
Fig 2: Transmission Housing On Torque Converter Housing Components (2 Of 2)
G09975768Courtesy of MERCEDES-BENZ USA
IMPORTANT Notes on threaded connections with aluminum screws/bolts   AH00.00-P-0006-01RM
IMPORTANT Notes on automatic transmission   AH27.19-P-0001-01NKB
IMPORTANT Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
DISASSEMBLING Disassemble     
1 Fasten transmission on assembly stand   AR27.10-P-0600-01EWM
Boom crane
Passenger car engine assembly stand
SPECIAL TOOL Support fixture Fig 6
SPECIAL TOOL Lifting device Fig 9
2 Drain transmission oil and detach oil pan (2)   AR27.10-P-7030EWM
NOTES Cleanliness is essential when working on the transmission.
Otherwise, even the smallest foreign particle in the hydraulic components of the transmission can lead to malfunctions or a total failure of the transmission.
IMPORTANT For cleaning, use lint-free cleaning cloth. Chamois leathers are the most suitable.
3 Remove electrohydraulic controller unit (3)   AR27.19-P-0200EWM
4 Remove oil guide pipes (4) IMPORTANT To do this, remove bolt (5).  
5 Remove park pawl actuator (6)   AR27.60-P-0956EWM 
6 Remove rear engine mount bearing bracket (7)    
7 Remove output flange (8) TRANSMISSION 725.0 in MODEL 212 with ENGINE 642 AR27.50-P-0620-02EWM 
SPECIAL TOOL Puller, two-arm Fig 7
SPECIAL TOOL Socket wrench bit Fig 5
SPECIAL TOOL Pin wrench Fig 4
8 Remove radial shaft sealing ring (9) NOTES Do not damage the seat of the radial shaft sealing ring (9).
Otherwise leaks can occur.		  
9 Remove grooved ball bearing (10)   AR27.50-P-0601-01EWM 
IMPORTANT To do so, remove retaining ring (18).
SPECIAL TOOL Puller Figure
SPECIAL TOOL Collet chuck Figure
10 Attach support plate (11) and valve lifter (12) for prying off transmission housing (1) SPECIAL TOOL Valve lifter Fig 3
SPECIAL TOOL Support plate Fig 11
11 Remove internal Torx bolts (13, 14) NOTES Position transmission so that it is vertical with the torque converter housing (15) facing downward.
Otherwise, the transmission housing (1) will fall down after removing the last internal Torx bolt (13, 14).		  
12 Detach transmission housing (1) from torque converter housing (15) using valve lifter (12) SPECIAL TOOL Valve lifter Fig 3
ASSEMBLING Assemble     
13 Mount transmission housing (1) onto torque converter housing (15) NOTES Position the transmission housing (1) carefully. Otherwise, the disks in the disk pack may break.
NOTES Never tighten the transmission housing (1) using the internal Torx bolts (13, 14) on the torque converter housing (15).
Otherwise, the disks in the disk pack may break.
IMPORTANT Align disks in transmission housing (1). Push the output flange (8) onto the output shaft (17). By abruptly turning the output shaft (17) while simultaneously lifting the transmission housing (1) the transmission housing (1) gradually slips up to the seal (16) of the torque converter housing (15). The transmission housing (1) must lie completely flush (without gaps) against the seal (16) on the torque converter housing (15) (arrow).		  
14 Tighten internal Torx bolts (13, 14) IMPORTANT Replace internal Torx bolts (13, 14).  
TORQUE SPECIFICATION Screw/bolt, torque converter housing to transmission housing *BA27.10-P-1002-04H 
TORQUE SPECIFICATION Screw/bolt, transmission housing to converter housing *BA27.10-P-1004-04H 
15 Remove support plate (11) and valve lifter (12) SPECIAL TOOL Valve lifter Fig 3
SPECIAL TOOL Support plate Fig 11
16 Install grooved ball bearing (10) IMPORTANT To do so, mount retaining ring (18)  
17 Install radial shaft sealing ring (9) NOTES Do not damage the seat of the radial shaft sealing ring (9).
Otherwise leaks can occur.
IMPORTANT Fit a new radial shaft sealing ring (9).
IMPORTANT Pound new radial shaft sealing ring (9) using SPECIAL TOOL drift into rear cover, until SPECIAL TOOL drift is in contact with the rear cover.		  
SPECIAL TOOL Drift Fig 12
18 Install output flange (8) TRANSMISSION 725.0 in MODEL 212 with ENGINE 642
IMPORTANT Replace collar nut.		 AR27.50-P-0620-02EWM 
TORQUE SPECIFICATION Collar nut, output flange to output shaft *BA27.10-P-1012-04H 
SPECIAL TOOL Puller, two-arm Fig 7
SPECIAL TOOL Socket wrench bit Fig 5
SPECIAL TOOL Pin wrench Fig 4
19 Mount rear engine mount bearing bracket (7) INSTALLATION IMPORTANT Replace screw/bolts.  
TORQUE SPECIFICATION Screw/bolt, rear bracket to transmission *BA27.10-P-1011-04H 
20 Install park pawl actuator (6)   AR27.60-P-0956EWM 
21 Install oil guide pipes (4) IMPORTANT To do so, screw in bolt (5). Check oil guide pipes (4), sealing rings and sealing lips and replace, if necessary.
IMPORTANT Check oil guide pipes (4) are correctly seated.		  
TORQUE SPECIFICATION Screw/bolt, oil guide pipe to transmission housing *BA27.10-P-1013-04H 
22 Install electrohydraulic controller unit (3)   AR27.19-P-0200EWM
23 Install oil pan (2)   AR27.10-P-7030EWM
24 Detach transmission from assembly stand    
COMPLETE AUTOMATIC TRANSMISSION

Number Designation TRANSMISSION 725.0
BA27.10-P-1002-04H Screw/bolt, torque converter housing to transmission housing M8 Stage 1 Nm 10
Stage 2 ∠° 90
COMPLETE AUTOMATIC TRANSMISSION

Number Designation TRANSMISSION 725.0
BA27.10-P-1004-04H Screw/bolt, transmission housing to converter housing M8 Stage 1 Nm 10
Stage 2 ∠° 90
COMPLETE AUTOMATIC TRANSMISSION

Number Designation TRANSMISSION 725.0
BA27.10-P-1011-04H Screw/bolt, rear bracket to transmission Stage 1 Nm 10
Stage 2 ∠° 90
COMPLETE AUTOMATIC TRANSMISSION

Number Designation TRANSMISSION 725.0
BA27.10-P-1012-04H Collar nut, output flange to output shaft Nm 200
COMPLETE AUTOMATIC TRANSMISSION

Number Designation TRANSMISSION 725.0
BA27.10-P-1013-04H Screw/bolt, oil guide pipe to transmission housing Nm 4
Fig 3: Identifying Valve Lifter (442 589 00 31 00)
G09975769Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Pin Wrench (129 589 01 07 00)
G09975770Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Socket Wrench Bit (126 589 02 09 00)
G09975771Courtesy of MERCEDES-BENZ USA
Fig 6: Identifying Support Fixture (725 589 00 40 00)
G09975772Courtesy of MERCEDES-BENZ USA
Fig 7: Identifying Puller, Two-Arm (000 589 88 33 00)
G09975773Courtesy of MERCEDES-BENZ USA
Fig 8: Identifying Collet Chuck (140 589 06 34 00)
G09975774Courtesy of MERCEDES-BENZ USA
Fig 9: Identifying Lifting Device (724 589 02 63 00)
G09975775Courtesy of MERCEDES-BENZ USA
Fig 10: Identifying Puller (001 589 50 33 00)
G09975776Courtesy of MERCEDES-BENZ USA
Fig 11: Identifying Support Plate (722 589 00 31 00)
G09975777Courtesy of MERCEDES-BENZ USA
Fig 12: Identifying Drift (140 589 12 15 00)
G09975778Courtesy of MERCEDES-BENZ USA
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