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"2011” SEMINAR INFORMATION

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1. 5 4 JE o SAN eee AS Noa as i E l gt 14 STEEL CHECK BALLS 2 PLASTIC CHECK BALLS 8 CHECK VALVES NOTE SOME MODELS WILL HAVE A SPRING ON TOP OF EACH CHECKBALL Copyright 2011 ATSG Automatic Transmission Service Group RAATSG 2017 SEMINAR INFORMATION UPPER VALVE BODY TI 1 Working Pressure Regulator Valve 8 Converter Clutch Shift Valve 2 K1 Regulating Valve 9 Lubrication Pressure Regulator Valve 3 Bl Regulating Valve 10 K2 Regulating Valve 4 B1 B3 Shift Valve 11 Limp home Mode Shift Valve 5 B3 Regulating Valve 12 K2 Shift Valve 6 K3 Shift Valve 13 B2 BR Regulating Valve 7 Converter Inlet Regulating Valve 14 2 2 Shi
2. 2011 SEMINAR INFORMATION MERCEDES BENZ 722 9 PRELIMINARY INFORMATION Mercedes Benz has produced a new 5th generation electronically controlled gearbox with seven forward and two reverse speeds Vehicle Application Transmission Designation The W7A 700 18 the only model size 722 9 being produced at the time of this written material a smaller model the W7A 400 will be introduced at a later time This transmission is referred to as NAG 2 Neues Automatische Getriebe 2 New Automatic Gearbox 2 or 7G Tronic Vehicle Applications Select non 4MATIC 2WD MY 2004 vehicles w M113 engine S340 S CL E SL500 Optional SLK R171 09 04 Standard Equipment CLS 350 late 2004 E350 late 2004 M Class W164 2005 R Class W251 2005 G Class X164 2006 End of production models that will unlikely receive the 722 9 would be W163 R170 amp V463 722 9 for W164 W251 X164 will be equipped with shift by wire no shifter rod or cable An electronic control module on the left rear side of the transmission just above the pan rail which operates a shift control valve and its position is monitored by a position sensor The 722 6 NAG 1 or V will continue production until approximately MY 2012 and installed in 4 cyl models Maybach M275 vehicles some select manufacturer s contract vehicles Fluid Type Newly developed suggested use only transmission fluid referred to as ATF 3353 with higher friction consistency thermal st
3. 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 13 Single Planetary Carrier 2 Turbine Wheel 14 Sun Gear 3 Stator 15 Long Planet gears 4 Impeller 16 Planet Gears 5 Small Internal Geared Wheel 17 Planet Gears 6 Dual Planet Carrier BR Multi Disc Brake BR 7 Sun Gear B1 Multi Disc Brake B1 8 Large Internal Geared Wheel B2 Multi Disc Brake B2 9 Internal Geared Wheel B3 Multi Disc Brake B3 10 Single Planetary Carrier K1 Multi Disc Clutch K1 11 Sun Gear K2 Multi Disc Clutch K2 12 Internal Geared Wheel K3 Multi Disc Clutch K3 Copyright 2011 ATSG Automatic Transmission Service Group ATSE 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 POWER FLOW Bl Power Flow 2nd Gear B3 J 16 Input Torque Input Shaft r CO UI Output Shaft The Ravigneaux Planet Small Ring Gear 5 is driven by the Input Shaft The Long Planet Gears 15 rotate around Sun Gear 7 which 18 held by the Bl Brake Clutch An increase in torque and reduced rpm 1s transmitted to the Dual Planet Carrier 6 The Single Rear Planet Ring Gear 9 rotates at the same speed as it 1s mechanically connected to the Dual Planet Carrier The Planet Gears 18 rotate around Sun Gear 11 held by the K3 Clutch and rotate Planet Carrier 10 The Single Front Planet Ring Gear 12 is connected mechanically to the Plan
4. Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 13 Single Planetary Carrier 2 Turbine Wheel 14 Sun Gear 3 Stator 15 Long Planet gears 4 Impeller 16 Planet Gears 5 Small Internal Geared Wheel 17 Planet Gears 6 Dual Planet Carrier BR Multi Disc Brake BR 7 Sun Gear B1 Multi Disc Brake B1 8 Large Internal Geared Wheel B2 Multi Disc Brake B2 9 Internal Geared Wheel B3 Multi Disc Brake B3 10 Single Planetary Carrier K1 Multi Disc Clutch K1 11 Sun Gear K2 Multi Disc Clutch K2 12 Internal Geared Wheel K3 Multi Disc Clutch K3 Copyright 2011 ATSG Automatic Transmission Service Group PARNTSG 2077 SEMINAR INFORMATION MERCEDES BENZ 722 9 POWER FLOW Power Flow 5th Gear N r If 2 Input Torque Input Shaft Output Shaft With the K1 K2 and K3 Clutch engaged the Power Flow runs from the Input Shaft via the locked Ravigneaux Planetary Gear set components 5 6 7 8 15 amp 16 and the locked Front Single Planetary Gear set 12 13 14 amp 17 to the Output Shaft and rotate at the same speed as the Input shaft in the direction of engine rotation at a ratio of 1 000 Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18
5. Note If towing distance or speed exceeds pre mentioned values damage may occur to transmission Clutch Clearances no ofdisc 722 9 722 93 mm mm B1 Brake 3 2 0 2 4 4 2 2 2 6 2 2 2 6 5 2 3 2 7 B2 Brake internal tooth 4 1 7 2 1 1 7 2 1 5 1 8 2 2 1 8 2 2 external tooth 5 1 7 2 1 1 7 2 1 6 1 8 2 2 1 8 2 2 B3 Brake 3 2 0 2 4 2 0 2 4 4 2 2 2 6 2 2 2 6 5 2 3 2 7 2 3 2 7 Br Brake N A 1 0 1 4 1 0 1 4 K1 Clutch 3 2 0 2 4 4 2 2 2 6 5 2 4 2 8 8 6 2 4 2 8 K2 Clutch 3 1 7 2 1 4 1 9 2 3 5 2 1 2 5 6 2 2 2 6 1 9 2 3 7 2 0 2 4 8 2 1 2 5 K3 Clutch 3 2 4 2 8 4 2 2 2 6 5 2 4 2 8 All clutch clearances are measured between the Flange and retainer ring while applying the amount of hand pressure listed below BI N600 B2 N1000 B3 N 600 BR N A KI N800 K2 N1200 K3 N 600 Note B2 Brake multi disc clutches use single sided plates at this point in time other clutch members may use single sided plates at a future date Automatic Transmission Service Group PAATSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 PRELIMINARY INFORMATION B3 Feed Port K1 Y3 8y2 B1 Y3 8y5 B3 Y3 8y7 K3 Y3 8y4 N C N V N O N A N C N V N O N A A Green Top Black Top Green Top Black Top Y3 8n3 TCC Y3 8y8 PCS Y3 8y1 K2 Y3 8y3 B2 BR Y3 8y6 N O N A N N C N V N O N A N C N V Green Top Black Top Black Top Green Top Y 3 8n1 Input speed sensor front Reads Input Shaft Speed Y3 8n2 Middle speed sensor center R
6. B2 9 Internal Geared Wheel B3 Multi Disc Brake B3 10 Single Planetary Carrier 11 Sun Gear 12 Internal Geared Wheel K1 Multi Disc Clutch K1 K2 Multi Disc Clutch K2 K3 Multi Disc Clutch K3 Copyright 2011 ATSG Automatic Transmission Service Group PAATSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 POWER FLOW Power Flow 4th Gear U N r s ve Or 7 A N Ls Ua pi ie 0 EE Input Torque Input Shaft Output Shaft With the K1 Clutch engaged the Ravigneaux Planetary Gear set components 5 6 7 8 15 amp 16 are locked together and send Input Torque and Input Speed unchanged to the Ring Gear 9 With the K2 Clutch engaged the Single Rear Planet Ring Gear 9 and Single Front Planet Ring Gear 12 rotate at the same speed The Single Rear Planetary system is locked and not involved in the gear ratio The engaged K2 Clutch drives the Single Front Planet Ring Gear 12 at Input Speed The Planetary Gears 17 rotate around Sun Gear 14 which 1s held by the B2 Brake Clutch and transfers the increased torque and reduced rotational speed to the Output Shaft through Planet Carrier 13 The Output Shaft rotates with reduced input speed in the direction of engine rotation ata ratio of 1 368 Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18
7. Input Torque Input Shaft Output Shaft The Ravigneaux Planet Small Ring Gear 5 is driven by the Input Shaft The Long Planet Gears 15 drive the Short Planet Gears 16 to rotate inside the Large Ring Gear that 1s held by the B3 Brake Clutch An increase in torque and reduced rpm 1s transmitted to the Dual Planet Carrier 6 The Single Rear Planet Ring Gear 9 rotates at the same speed as it is mechanically connected to the Dual Planet Carrier The Planet Gears 18 rotate Sun Gear 11 which in turn rotates Sun Gear 14 by the engaged K3 Clutch Input Torque and Input Speed are transmitted to the Single Front Planet Ring Gear 12 by the engaged K2 Clutch The speed difference between the Sun Gear 14 and Ring Gear 12 produces an increased speed and reduced torque to the Output Shaft through Planet Carrier 13 The Output Shaft rotates with reduced input speed m the direction of engine rotation at a ratio of 8 Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18 Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 13 Simgle Planetary Carrier 2 Turbine Wheel 14 Sun Gear 3 Stator 15 Long Planet gears 4 Impeller 16 Planet Gears 5 Small Internal Geared Wheel 17 Planet Gears 6 D
8. Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 13 Single Planetary Carrier 2 Turbine Wheel 14 Sun Gear 3 Stator 15 Long Planet gears 4 Impeller 16 Planet Gears 5 Small Internal Geared Wheel 17 Planet Gears 6 Dual Planet Carrier BR Multi Disc Brake BR 7 Sun Gear B1 Multi Disc Brake B1 8 Large Internal Geared Wheel B2 Multi Disc Brake B2 9 Internal Geared Wheel B3 Multi Disc Brake B3 10 Single Planetary Carrier K1 Multi Disc Clutch K1 11 Sun Gear K2 Multi Disc Clutch K2 12 Internal Geared Wheel K3 Multi Disc Clutch K3 Copyright 2011 ATSG Automatic Transmission Service Group SEMINAR INFORMATION 2017 4 MERCEDES BENZ 722 9 POWER FLOW Power Flow 6th Gear B1 B3 ot Jo 1 er 6 KEN A N Input Torque Input Shaft Output Shaft The Ravigneaux Planet Small Ring Gear 5 1s driven by the Input Shaft The Long Planet Gears 15 rotate around Sun Gear 7 which 18 held by the Bl Brake Clutch An increase in torque and reduced rpm 1s transmitted to the Dual Planet Carrier 6 The Single Rear Planet Ring Gear 9 rotates at the same speed as 1t 1s mechanically connected to the Dual Planet Carrier The Planet Gears 18 rotate Sun Gear 11 which rotates Sun Gear 14 by the engaged K3 Cl
9. engaged the Ravigneaux Planetary Gear set components 5 6 7 8 15 amp 16 are locked together and send Input Torque and Input Speed unchanged to Ring Gear 9 The Single Rear Planet Ring Gear 9 drives the Planet Gears 18 to rotate around Sun Gear 11 held by the K3 Clutch and rotate Planet Carrier 10 The Single Front Planet Ring Gear 12 1s connected mechanically to the Planet Carrier 10 and rotates at the same speed Planetary Gears 17 rotate around Sun Gear 14 which 1s held by the B2 Brake Clutch and transfers the increased torque and reduced rotational speed to the Output Shaft through Planet Carrier 13 The Output Shaft rotates with reduced input speed in the direction of engine rotation at a ratio of 1 921 Input Torque Input Shaft Output Shaft Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18 Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 13 Single Planetary Carrier 2 Turbine Wheel 14 Sun Gear 3 Stator 15 Long Planet gears 4 Impeller 16 Planet Gears 5 Small Internal Geared Wheel 6 Dual Planet Carrier 17 Planet Gears BR Multi Disc Brake BR 7 Sun Gear B1 Multi Disc Brake B1 8 Large Internal Geared Wheel B2 Multi Disc Brake
10. 1 11 Sun Gear K2 Multi Disc Clutch K2 12 Internal Geared Wheel K3 Multi Disc Clutch K3 Copyright 2011 ATSG Automatic Transmission Service Group SEMINAR INFORMATION 2017 4 MERCEDES BENZ 722 9 TORQUE CONVERTER CLUTCH STRATEGY A Open n OSS speed B Slip rpm d Throttle Torque converter slip values vary extremely from stall speed to negative values under deceleration The Computer will calculate the most optimal slip based on the current driving conditions The chart below illustrates some examples of converter slip taken with a manufacturers scan tool in a vehicle at 45 mph Condition Gear Speed Speed Shaft Speed Converter Slip State efe foe mo o e e De Dos o Ts Note The converter slip figures stated in this chart are to be used as examples only and not as a guideline for diagnosis Cruise Deceleration Copyright 2011 ATSG Automatic Transmission Service Group SEMINAR INFORMATION 20 7 4 MERCEDES BENZ 722 9 TORQUE CONVERTER CLUTCH STRATEGY TORQUE CONVERTER DAMPER SPRING LOCK UP CLUTCH The Torque Converter used is the same as the 722 6 and holds 4 liters of fluid Lock up can be applied in all seven forward gears and incorporates damper springs integral to the lock up clutch assembly to help prevent vibration or noise during clutch apply at low engine rpm Copyright O 2011 ATSG Automatic Transmission Service Group PARNTSG 207
11. 7 SEMINAR INFORMATION MERCEDES BENZ 722 9 SHIFT BY WIRE Direct Select no shift rod PARK gt ACTIVATION S BUTTON SELECTOR LEVER LOCATED BEHIND STEERING WHEEL SHIFT SELECTOR BUTTON INTELLIGENT SERVO MODULE ISM Some late model vehicles with the 722 9 will be equipped with shift by wire called Direct Select There is no mechanical connection to a shifter in the passenger compartment An Intelligent Servo Module ISM will be attached to the left rear side of the case just above the pan rail The module will control and monitor the shift valve lever position If the vehicles electrical system fails there is a back up Emergency P function to release the transmission from park There is a spare battery found underneath the floor panel on the passenger side of the vehicle to energize to the module in the emergency mode Copyright 2011 ATSG Automatic Transmission Service Group PARNTSG 2077 SEMINAR INFORMATION MERCEDES BENZ 722 9 FRONT PUMP CRESCENT TYPE PUMP SAME TYPE AS 722 6 RECESSED HERE SUCTION SIDE The crescent type pump although the same design as the 722 6 has an additional recess on the suction side of the pump to help reduce intake noise This modification is expected to be produced on later 722 6 transmissions Future pump housing and gears may be made out of aluminum in an effort to reduce weight and high temperatures Copyright O 2011 ATSG Automatic Transmission Service Grou
12. APPLICATION SOLENOID APPLICATION amp SOLENOID FUNCTION CLUTCH BRAKE a me 0 Y3 8y5 Y3 8y6 Y3 8y7 Y3 8y2 Y3 8y3 Y3 8y4 N O M N C M N C M N C M N O M N O M Normally Normally Normally Normally Normally Normally Applied Vented Vented Vented Applied Applied to Solenoid Solenoid to Solenoid Solenoid to Solenoid Solenoid to Solenoid Solenoid to Solenoid Solenoid to Solenoid Solenoid N O M Mercedes nomenclature for Normally Open This refers to the Solenoid feed connection to Solenoid output pressure To Simplify Normally Open Solenoid feed is connected to Solenoid output when the Solenoidis OFF ATSG refers to that as Normally Applied N C M Mercedes nomenclature for Normally Closed This refers to the Solenoid feed connection to Solenoid output pressure To Simplify Normally Closed Solenoid feed is blocked to Solenoid output when the Solenoid is OFF ATSG refers to that as Normally Vented B2 amp BR share the same solenoid the oil is directed to a different clutch members by the selector shift valve Failsafe while driving all solenoids will be turned off transmission will shift to 6th gear After engaging Park then Drive only 2nd amp Reverse gear are available Copyright 2011 ATSG Automatic Transmission Service Group PARTSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 CLUTCH POSITION amp APPLICATION Gear Gear Ratio 1 B2 B3 W7A 700 ESSES EN EC
13. ES EN EN ES _ 1 1 1 1 1 EE 7 fm ED E EE a A ES NAN KA EA 1 5 Mode 2 Mode X Applied Copyright O 2011 ATSG Automatic Transmission Service Group PARTSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 SHIFT SEQUENCES fo 6th Gear Sth Gear A AA mes E 14 ET mica x mece x x x Release B3_ B3 7 6 E Release K2 4 A Release Kl Apply B3 Apply B2 1 The 722 9 transmission has Sequential shifting clutch on clutch in addition to providing a down shift strategy that allows the transmission to skip gears during down shifts as long as one clutch member is released as another is applied Copyright O 2011 ATSG Automatic Transmission Service Group PAATSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 POWER FLOW Rear Internal Ring Gear Output Shafi DE qe p The Ravigneaux gear set drives the rear internal ring gear For every 1 revolution of the ring gear both the rear and middle sun gears are forced to rotate 2 5 times when the K3 clutch 18 applied The rear carrier and middle internal ring gear are being driven at input speed via the K2 clutch The difference between the speed of the middle sun gear and the middle internal ring gear causes the middle carrier and output shaft to rotate at an overdrive speed of 0 820 1 in 6th and 0 728 1 in 7th Au
14. ability and temperature rating Can also be used on previous model 722 3 4 5 6 transmissions No scheduled maintenance required fill for life and available at Shell amp Fuchs Europe oil suppliers in 1 liter bottles under Mercedes Benz part number 4001 989 45 03 10 Electronic Control Components The Transmission Control Module Y 3 8n4 which is Copyright O 2011 ATSG flash capable along with the following components Eight Solenoids Working Pressure Control Solenoid Y3 8y1 K1Clutch Solenoid Y 3 8y2 K2 Clutch Solenoid Y 3 8y3 K3 Clutch Solenoid Y 3 8y4 B1Brake Clutch Solenoid Y3 8y5 B2 Brake Clutch Solenoid Y3 8y6 B3 Brake Clutch Solenoid Y3 8y7 Torque Converter Lock Up Solenoid Y3 8y8 Two Oil Floats Oil Control Float 1 31 Oil Control Float 2 32 Three Speed Sensors Turbine RPM Sensor Y3 8n1 Internal RPM Sensor Y3 8n2 Output RPM Sensor Y3 8n3 Selection Range Sensor Y3 8s1 are all integrated into the valve body assembly Shift Strategy The shift strategy improvements include e Shorter computer reaction time by 0 1 second e Downshifts shortened by up to 0 2 seconds e Coasting downshifts shortened by 0 4 2 5 seconds e 37 47 MPH acceleration times shortened by 23 28 model dependant e Fuel consumption reduced by up to 4 e Noise levels reduced due to lower engine speed in Sth 6th amp 7th gear at constant vehicle speed e Flexible adaptation to vehicle and engine Variable Shift Programing Two ba
15. ater design Part 220 270 09 12 Copyright O 2011 ATSG Automatic Transmission Service Group
16. d to B2 BR solenoid via emergency operation valves and the transmission will now achieve 2nd in D and Reverse Gear Ratio The gear ratios are achieved with four multi disc brakes and three multi disc clutches no free wheels units sprags There are three planetary gear sets Two simple One Ravigneaux Torque Converter same used in some 722 6 Torque converter operates in open or slip mode in all seven forward gears Lock up converter is never fully locked Converter 1s open in Ist amp 2nd gear if throttle and output shaft speed are in Zone A Converter 1s in slip control in all 7 forward gear if throttle and output shaft speed are in Zone B Oil feed pressure to the converter is varied depending on the amount of desired slip Open High flow Slip Control Lower flow Lock up clutch will turn off and transmission will shift to a lower gear at oil temperatures of 140C or higher Holds 4 liters of fluid Incorporates damper springs integral to lock up clutch to reduce vibration Copyright 2011 ATSG Vehicle Towing If vehicle must be towed it should be transported by use of a flat bed trailer type of tow truck Alternate towing with vehicle drive axle lifted If either fore mentioned options are not available a tow bar preferred will suffice under the following conditions limitations 1 Turn key to position 2 2 Selector lever to N position 3 Max towing speed 31 mph 4 Max towing distance 31 miles
17. e K2 Clutch Drum Front speed sensor Y3 Sn monitors Input Turbine Shaft and back Ravigneaux Ring Gear speed Center speed sensor Y3 8n2 monitors Ravigneaux carrier and rear Ring Gear speed Rear speed sensor Y3 8n3 monitors Output Shaft speed from exciter ring on the Park Pawl gear Note Magnets are molded in a plastic ring and secured inside Non Ferrous flanges Copyright O 2011 ATSG Automatic Transmission Service Group PARNTSG 2077 SEMINAR INFORMATION MERCEDES BENZ 722 9 RANGE SENSOR amp ELECTRICAL CONNECTOR 5 PIN CONNECTOR 2 round o rings amp 1 square o ring 1 CAN 6 High ELECTRICAL 2 CANC Low CONNECTOR 3 Diagnostic Line 4 Circuit 87 relay amp fuse depending on model 5 Circuit 31 FLUID LEVEL FLOAT FLUID LEVEL FLOAT RANGE SENSOR The Range sensor Y3 8s is integral to the TCM conductor plate and is not replaced separately A magnet located on the Manual Valve signals its position through sensor pick ups referred to as Permanent Magnetic Linear Contact less Displacement Sensor PLCD If this is a failsafe item should it become faulty or the signal is not learned Fluid Level Floats 2 To prevent oil foaming from gears running in fluid The front one was added due to transmission extended length 41mm causing oil to slosh during hard forward stops Copyright 2011 ATSG Automatic Transmission Service Group WAATSG 2011 SEMINAR INFORMATION MERCEDES BENZ 722 9 SOLENOID
18. eads Ravigneaux Carrier Rear Internal Ring Gear Speed Y3 8n3 Output speed sensor rear Reads Output Shaft Speed Y3 8n4 Electrohydraulic Control Module TCM w internal transmission fluid temp sensor Y3 8y1 Working Pressure Normally Open Normally Applied Solenoid off High Pressure Y3 8y2 K1 Clutch Normally Closed Normally Vented Solenoid off No Pressure Y3 8y3 K2 Clutch Normally Open Normally Applied Solenoid off High Pressure Y3 8y4 K3 Clutch Normally Open Normally Applied Solenoid 011 High Pressure Y3 8y5 Bl Brake Normally Open Normally Applied Solenoid off High Pressure Y3 8y6 B2 BR Brake Normally Closed Normally Vented Solenoid off No Pressure Y3 8y7 B3 Brake Normally Closed Normally Vented Solenoid 011 No Pressure Y3 8y8 Lock Up Normally Closed Normally Vented Solenoid off No Pressure Y3 8s1 Range sensor Note Normally Open Normally Applied solenoids are used when Limp Mode strategy has been initiated when all solenoids are turned off Copyright 2011 ATSG Automatic Transmission Service Group PARTSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 HALL AFFECT SPEED SENSORS Magnet Rings are covered by Rue none Meri Magnet Ring Integral to the Ravigneaux Carrier which spins around the outside of the K2 Clutch Drum Magnet Ring Integral to the 3 Input Turbine Shaft The back Ravigneaux Ring Gear is integral to th
19. et Carrier 10 and rotates at the same speed Planetary Gears 17 rotate around Sun Gear 14 which is held by the B2 Brake Clutch and transfers the increased torque and reduced rotational speed to the Output Shaft through Planet Carrier 13 The Output Shaft rotates with reduced mput speed m the direction of engine rotation at a ratio of 2 859 Ravigneaux gear set Short Planet Gears 16 Long Planet Gears 15 Small Ring Gear 5 Dual Planet Carrier 6 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 2 Turbine Wheel 3 Stator 4 Impeller 5 Small Internal Geared Wheel 6 Dual Planet Carrier 7 Sun Gear 8 Large Internal Geared Wheel 9 Internal Geared Wheel 10 Single Planetary Carrier 11 Sun Gear 12 Internal Geared Wheel Front Single Planet Gear Set Planetary Gears 17 Planetary Gears 18 Ring Gear 12 Ring Gear 9 Planet Carrier 13 Planet Carrier 10 Sun Gear 14 Sun Gear 11 13 Simgle Planetary Carrier 14 Sun Gear 15 Long Planet gears 16 Planet Gears 17 Planet Gears BR Multi Disc Brake BR B1 Multi Disc Brake B1 B2 Multi Disc Brake B2 B3 Multi Disc Brake B3 K1 Multi Disc Clutch K1 K2 Multi Disc Clutch K2 K3 Multi Disc Clutch K3 Rear Single Planet Gear Set Copyright 2011 ATSG Automatic Transmission Service Group SEMINAR INFORMATION 20 7 4 MERCEDES BENZ 9 POWER FLOW Power Flow 3rd Gear 2 With the K1 Clutch
20. ft Valve Copyright 2011 ATSG Automatic Transmission Service Group RAATSG 2017 SEMINAR INFORMATION LOWER VALVE BODY 15 K3 Regulating Valve 16 Solenoid Regulating Valve 1 TCC PCS K2 amp B2 BR 17 Solenoid Regulating Valve 2 B1 K1 K3 amp B3 18 B2 1 Shift Valve 19 Manual Valve Copyright O 2011 ATSG Automatic Transmission Service Group WANTSG 200 SEMINAR INFORMATION MERCEDES BENZ 722 9 TRANSMISSION OIL PAN amp LEVEL CHECK Previous Design Overflow Tube Check Plug Clips onto pan New Tube is New Pan is 13 5mm longer 3mm deeper OldPan New Pan Initial Fill Celsius 30 40 Level Check The oil pan has been redesigned and there is no longer a filler tube used on the transmission case It is now filled and fluid level checked through an overflow tube clips onto pan This new design pan has also been updated The overflow tube and overall pan depth have been increased The updated pan is now 3mm deeper and the overflow tube is 13 5mm longer can be identified by its white color than the previous design This update now allows an increase of 0 2 liters of fluid compared to the older pan If the earlier design pan is removed for repairs it is suggested to update to the l
21. input speed opposite to the direction of engine rotation at aratio of 3 416 Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18 Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 2 Turbine Wheel 3 Stator 4 Impeller 5 Small Internal Geared Wheel 6 Dual Planet Carrier 7 Sun Gear 8 Large Internal Geared Wheel 9 Internal Geared Wheel 10 Single Planetary Carrier 11 Sun Gear 12 Internal Geared Wheel 13 Single Planetary Carrier 14 Sun Gear 15 Long Planet gears 16 Planet Gears 17 Planet Gears BR Multi Disc Brake BR B1 Multi Disc Brake B1 B2 Multi Disc Brake B2 B3 Multi Disc Brake B3 K1 Multi Disc Clutch K1 K2 Multi Disc Clutch K2 K3 Multi Disc Clutch K3 Automatic Transmission Service Group Copyright 2011 ATSG PAATSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 POWER FLOW Power Flow Reverse Gear In C Mode Bl BR B2 2 Input Torque Input Shaft Output Shaft 1 The Ravigneaux Planet Small Ring Gear 5 1s driven by the Input Shaft The Long Planet Gears 15 drive the Short Planet Gears 16 which rotate inside the Large Ring Gear 8 held by the B3 Brake Clutch A decrease in rotational speed 1s trans
22. mitted to the Dual Planet Carrier 6 The Single Rear Planet Ring Gear 9 rotates at the same speed as it is mechanically connected to the Dual Planet Carrier The Planet Gears 18 rotate around Sun Gear 11 The rotational direction of the Sun Gear 1s Reversed by Planet Carrier 10 which 18 held by the BR Brake Clutch The applied K3 Clutch connects Sun Gear 14 to Sun Gear 11 This causing both Sun Gears to rotate at the same speed and direction and drive Planet Gears 17 This increases torque and reduces rotational speed to the Output Shaft through Planet Carrier 13 The Output Shaft rotates at a reduced input speed opposite to the direction of engine rotation at a ratio of 2 231 Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18 Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 13 Single Planetary Carrier 2 Turbine Wheel 14 Sun Gear 3 Stator 15 Long Planet gears 4 Impeller 16 Planet Gears 5 Small Internal Geared Wheel 17 Planet Gears 6 Dual Planet Carrier BR Multi Disc Brake BR 7 Sun Gear B1 Multi Disc Brake B1 8 Large Internal Geared Wheel B2 Multi Disc Brake B2 9 Internal Geared Wheel B3 Multi Disc Brake B3 10 Single Planetary Carrier K1 Multi Disc Clutch K
23. p RAMATSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 CASE COMPONENTS TRANSMISSION HOUSING die cast magnesium INTERMEDIATE PANEL GASKET aluminum sheet coated with elastomer seal CONVERTER HOUSING die cast aluminum Converter housing is die cast aluminum The transmission housing is die cast magnesium reduced weight compared to aluminum 2 5kg 5 51b which requires aluminum bolts due to steel bolts having a different expansion rate and corrosion concerns All aluminum bolts must be replaced if removed There is an intermediate panel or gasket made from an aluminum sheet with an elastomer coating between the converter housing and case This gasket extends out beyond the sealing surfaces of the converter and transmission housing to prevent water from settling on the transmission housing This gasket can be reused if there are no signs of damage to the elastomer coating Copyright 2011 ATSG Automatic Transmission Service Group RAATSG 2077 SEMINAR INFORMATION MERCEDES BENZ 722 9 COOLER LINE FITTINGS Transmission Cooler Ling Fittings do not have threads or Banjo type fittings Cooler lines are sealed with olt rans rubber O rings on push in type fittings secured with a retaining Copyright 2011 ATSG Automatic Transmission Service Group RAATSG 2011 SEMINAR INFORMATION MERCEDES BENZ 722 9 CHECKBALL amp SMALL PARTS LOCATIONS re AN Pr JN NA a Le
24. sic shift programs can be varied by customer same as 722 6 using the S C button on the Electronic Shifter Module ESM S Sport Ist gear starts Normal shift points Reverse gear 1 3 416 1 C Comfort 2nd gear starts Earlier up shifts and later downshifts Reverse gear 2 2 231 1 Note Transmission will start in first gear 1f any of the following conditions apply Ist gear is manually selected 3 4 to full throttle acceleration from start Cold engine temp pre catalytic warm up Automatic Transmission Service Group ATSE 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 PRELIMINARY INFORMATION Shift Optimal Gear SOG Shift into Optimal Gear software as known in previous models Up shifts and downshifts based on driving style and engine load similar to 722 6 Shift interlock controlled by Electronic Shifter Module ESM same as previous models Emergency function Limp home mode There are a variety of failsafe modes if a solenoid is defective the gear affected is blocked example solenoid Y3 8y7 B3 clutch is defective no Ist 7th or Reverse in S mode If hydraulic fault prevents a gear from engaging then the previous gear will be applied If the computer defaults while driving all solenoids will be turned off Solenoids that are normally open will allow full pressure to selected clutches and the transmission will be 6th gear After shifting to P oil pressure from K2 solenoid 1s redirecte
25. tomatic Transmission Service Group PAATSG 2017 SEMINAR INFORMATION MERCEDES BENZ 722 9 POWER FLOW Power Flow Ist Gear N r 1 24 7 N a 95 JF 0 EE Input Torque Input Shaft Output Shaft The Ravigneaux Planet Small Ring Gear 5 is driven by the Input Shaft The Long Planet Gears 15 drive the Short Planet Gears 16 to rotate inside the Large Ring Gear 8 held by the B3 Brake Clutch An increase in torque and reduced rpm 15 transmitted to the Dual Planet Carrier 6 The Single Rear Planet Ring Gear 9 rotates at the same speed as it 1s mechanically connected to the Dual Planet Carrier The Planet Gears 18 rotate around Sun Gear 11 held by the K3 Clutch and rotate Planet Carrier 10 The Single Front Planet Ring Gear 12 1s mechanically connected to the Planet Carrier 10 and rotates at the same speed Planetary Gears 17 rotate around Sun Gear 14 which is held by the B2 Brake Clutch and transfers the increased torque and reduced rotational speed to the Output Shaft through Planet Carrier 13 The Output Shaft rotates with reduced input speed in the direction of engine rotation at a ratio of 4 377 Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18 Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier
26. ual Planet Carrier BR Multi Disc Brake BR 7 Sun Gear B1 Multi Disc Brake B1 8 Large Internal Geared Wheel B2 Multi Disc Brake B2 9 Internal Geared Wheel B3 Multi Disc Brake B3 10 Single Planetary Carrier K1 Multi Disc Clutch K1 11 Sun Gear K2 Multi Disc Clutch K2 12 Internal Geared Wheel K3 Multi Disc Clutch K3 Copyright 2011 ATSG Automatic Transmission Service Group SEMINAR INFORMATION 2017 4 MERCEDES BENZ 722 9 POWER FLOW Power Flow Reverse Gear In S Mode B1 B3 BR B2 1 LE K2 K3 ER EO Le am em nm amun amu amu oe Be Input Torgue Input Shaft Output Shaft The Ravigneaux Planet Small Ring Gear 5 is driven by the Input Shaft The Long Planet Gears 15 rotate around Sun Gear 7 held by the Bl Brake Clutch An increase in torque and reduced rpm is transmitted to the Dual Planet Carrier 6 The Single Rear Planet Ring Gear 9 rotates at the same speed as it 1s mechanically connected to the Dual Planet Carrier The Planet Gears 18 rotate around Sun Gear 11 The rotational direction of the Sun Gear is Reversed by Planet Carrier 10 which 1s held by the BR Brake Clutch The applied K3 Clutch connects Sun Gear 14 to Sun Gear 11 This causing both Sun Gears to rotate at the same speed and direction and drive Planet Gears 17 This increases torque and reduces rotational speed to the Output Shaft through Planet Carrier 13 The Output Shaft rotates at a reduced
27. utch Input Torque and Input Speed are transmitted to the Single Front Planet Ring Gear 12 by the engaged K2 Clutch The speed difference between the Sun Gear 14 and Ring Gear 12 produces an increased speed and reduced torque to the Output Shaft through Planet Carrier 13 The Output Shaft rotates with reduced input speed in the direction of engine rotation at a ratio of 0 820 Ravigneaux gear set Front Single Planet Gear Set Rear Single Planet Gear Set Short Planet Gears 16 Planetary Gears 17 Planetary Gears 18 Long Planet Gears 15 Ring Gear 12 Ring Gear 9 Small Ring Gear 5 Planet Carrier 13 Planet Carrier 10 Dual Planet Carrier 6 Sun Gear 14 Sun Gear 11 Sun Gear 7 Large Ring Gear 8 1 Torque Converter Lockup Clutch 13 Simgle Planetary Carrier 2 Turbine Wheel 14 Sun Gear 3 Stator 15 Long Planet gears 4 Impeller 16 Planet Gears 5 Small Internal Geared Wheel 17 Planet Gears 6 Dual Planet Carrier BR Multi Disc Brake BR 7 Sun Gear B1 Multi Disc Brake B1 8 Large Internal Geared Wheel B2 Multi Disc Brake B2 9 Internal Geared Wheel B3 Multi Disc Brake B3 10 Single Planetary Carrier K1 Multi Disc Clutch K1 11 Sun Gear K2 Multi Disc Clutch K2 12 Internal Geared Wheel K3 Multi Disc Clutch K3 Copyright 2011 ATSG Automatic Transmission Service Group SEMINAR INFORMATION 2017 4 MERCEDES BENZ 722 9 POWER FLOW Power Flow 7th Gear B2 1 5 ESSES

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