Remove/Install Transmission With Start-Up Clutch - AR27.10-P-0505MNG
Transmission 725.0 in model 253 with engine 177 with code M005 (Vehicles with 4MATIC/all-wheel drive)
| Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil | Wear protective gloves, protective clothing and safety glasses. Do not pour transmission oil into beverage bottles. | AS00.40-Z-0001-01A | |
| Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels. | AS00.00-Z-0017-01A | |
| Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities. | No parts of the body or limbs should be within the operating area of mechanical components when moving components. | AS00.00-Z-0009-01A | |
| Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Notes on self-locking nuts and bolts | AH00.00-N-0001-01A | ||
| Notes on automatic transmission | AH27.19-P-0001-01NKB | ||
| Remove | |||
| 1 | Shift the transmission (1) into neutral position. | ||
| 2 | Release parking brake. | ||
| 3 | Secure vehicle to prevent it moving away. | ||
| 4 | Disconnect ground line from battery. | AR54.10-P-0003LW | |
| 5 | Secure vehicle on vehicle lift. | AR00.60-P-0100CW | |
| 6 | Drain coolant from low-temperature circuit. | AR09.41-P-6834MNG | |
| 7 | Loosen catalytic converters. | Left catalytic converter | AR49.20-P-0101MNG |
| Right catalytic converter | AR49.20-P-0102MNG | ||
| 8 | Remove starter wiring harness and electric lines of lamba sensors from left holder for starter wiring harness (10) at top. | ||
| 9 | Remove upper screw of left holder for starter wiring harness (10). | ||
| 10 | Remove lower screw of left holder for starter wiring harness (10) and remove holder for starter wiring harness (10). | ||
| 11 | Remove right holder for starter wiring harness (10) from transmission (1). | ||
| 12 | Remove holders of lower rear engine compartment lining. | ||
| 13 | Remove rear propeller shaft. | AR41.10-P-0050LWX | |
| 14 | Remove right coolant hose (3) from oil cooler (4) and seal openings using suitable stop plugs. | AR20.20-P-7441-01RQ | |
| Fig 3 | |||
| 15 | Remove coolant hoses (3) from coolant lines (2) and seal openings using suitable stop plugs. | Fig 2 | |
| Fig 3 | |||
| 16 | Release oil lines at transmission end. | AR27.55-P-0600MNG | |
| 17 | Remove oil cooler (4) with connected oil lines. | AR27.55-P-1000MNG | |
| 18 | Remove holders (5, 6). | ||
| 19 | Disconnect ground line of transmission (1) from underbody. | ||
| 20 | Remove heat shield (7). | AR27.40-P-0700-01LF | |
| 21 | Release and disconnect electrical connector of electric controller unit from transmission (1). | ||
| 22 | Unclip wiring harness to transfer case at rear engine carrier. | ||
| 23 | Release and disconnect electrical connector from all-wheel drive control unit (N45). | AR28.19-P-1003MNG | |
| 24 | Release and disconnect electrical connector from transmission oil temperature sensor (B91). | AR28.19-P-1007MNG | |
| 25 | Support transmission (1) with major-assembly support and mounting plate and strap down securely. | ||
| 000 588 11 62 00 Major assembly mount | WS01.00-P-0092B | ||
| 000 588 10 62 00 Support plate | WS26.00-P-3309B | ||
| 26 | Remove front axle differential propeller shaft from front axle differential. | AR41.10-P-0070LW | |
| 27 | Remove screws (9). | ||
| 28 | Screw guide pins into threaded holes of screws (9). | Fig 4 | |
| 29 | Lower the transmission (1) until all screws (8) are accessible. | ||
| 30 | Support front of engine between front axle carrier and engine using wooden wedge. | ||
| 31 | Remove cover from opening (arrow). | ||
| 32 | Carefully pry off wet clutch through opening (arrow) from two-mass flywheel. | Fig 1 | |
| 33 | Remove starter from transmission (1), place to one side with connected lines and fasten. | AR15.30-P-7100MNH | |
| 34 | Remove bolts (8). | ||
| 35 | Secure front axle differential propeller shaft at transmission (1) against falling down. | ||
| 36 | Carefully pull transmission (1) with wet clutch over the guide pins rearwards and lower downwards. | Damage will otherwise occur. If the wet clutch was pulled out of the transmission (1). ↓ Replace sealing rings and sinuous springs. |
|
| AR27.51-P-0300MNE | |||
| 37 | Remove wet clutch. | When replacing the transmission (1). | AR27.51-P-0300MNE |
| Install | |||
| 38 | Insert wet clutch. | After removing the wet clutch. | AR27.51-P-0300MNE |
| 39 | Release wet clutch locking clip and carefully position transmission (1) with wet clutch over the guide pins on the engine. | ||
| 40 | Unfasten locking clip of front axle differential propeller shaft. | ||
| 41 | Screw in screws (8). | *BA27.10-P-1001-04H | |
| 42 | Release mounting of starter and mount starter onto transmission (1). | AR15.30-P-7100MNH | |
| 43 | Install cover for opening (arrow). | ||
| 44 | Remove wooden wedge at front between front axle carrier and engine. | ||
| 45 | Remove guide pins from threaded holes of screws (9). | Fig 4 | |
| 46 | Screw in screws (9). | *BA27.10-P-1001-04H | |
| 47 | Attach front axle differential propeller shaft to front axle differential. | AR41.10-P-0070LW | |
| 48 | Release tie-down straps of transmission (1) and remove major assembly mount and mounting plate. | ||
| 000 588 11 62 00 Major assembly mount | WS01.00-P-0092B | ||
| 000 588 10 62 00 Support plate | WS26.00-P-3309B | ||
| 49 | Assemble and lock electrical connector of transmission oil temperature sensor (B91). | AR28.19-P-1007MNG | |
| 50 | Assemble and lock electrical connector of all-wheel drive control unit (N45). | AR28.19-P-1003MNG | |
| 51 | Clip wiring harness to transfer case at rear engine carrier. | ||
| 52 | Assemble and lock electrical connector of electric controller unit on transmission (1). | ||
| 53 | Install heat shield (7). | AR27.40-P-0700-01LF | |
| *BA27.10-P-1009-04H | |||
| 54 | Connect ground line of transmission (1) to underbody. | *BA00.19-P-1043-01E | |
| 55 | Install holders (5, 6). | *BA49.10-P-1009-02E | |
| 56 | Install oil cooler (4) with connected oil lines. | AR27.55-P-1000MNG | |
| 57 | Lock oil lines at transmission end. | AR27.55-P-0600MNG | |
| 58 | Attach coolant hoses (3) to coolant lines (2). | Fig 2 | |
| 59 | Attach right coolant hose (3) to oil cooler (4). | AR20.20-P-7441-01RQ | |
| 60 | Install rear propeller shaft. | AR41.10-P-0050LWX | |
| 61 | Install holders of lower rear engine compartment lining. | ||
| 62 | Attach right holder for starter wiring harness (10) to transmission (1). | *BA00.10-P-1002-01A | |
| 63 | Position left holder for starter wiring harness (10) at transmission (1) and screw in lower screw of left holder for starter wiring harness (10). | *BA00.10-P-1002-01A | |
| 64 | Screw in upper screw of left holder for starter wiring harness (10). | *BA00.10-P-1002-01A | |
| 65 | Mount starter wiring harness and electric lines of lamba sensors at left holder for starter wiring harness (10). | ||
| 66 | Fasten catalytic converters. | Left catalytic converter | AR49.20-P-0101MNG |
| Right catalytic converter | AR49.20-P-0102MNG | ||
| 67 | Connect ground line to battery. | AR54.10-P-0003LW | |
| 68 | Add low-temperature circuit coolant. | AR09.41-P-6834MNG | |
| 69 | Check and correct transmission oil level. | AR27.00-P-0270EWN | |
| 70 | Read out and delete fault memory. | ||
| AD00.00-P-2000-04B | |||
| 71 | Perform transmission adaptation with vehicle diagnosis system. | When replacing or repairing the transmission (1). | |
| AD00.00-P-2000-04B | |||
| Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. | Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | AS00.00-Z-0005-01A | |
| 72 | Perform engine test run and check transmission (1) for proper operation and leak tightness. | ||
| 73 | Install lower engine compartment paneling. | AR61.20-P-1105LW | |
| 74 | Disconnect vehicle from vehicle lift. | AR00.60-P-0100CW |
HEADLESS SCREWS: BOLTS AND NUTS, COARSE-PITCH THREAD
| Number | Designation | Model all (4xWD, CAR, smart) | |||
|---|---|---|---|---|---|
| BA00.10-P-1002-01A | M6 | 8.8 | Galvanized | Nm | 9 |
| Phosphated | Nm | 9 | |||
| 10.9 | Galvanized | Nm | 13 | ||
| Phosphated | Nm | 12 | |||
| 12.9 | Galvanized | Nm | 16 | ||
| Phosphated | Nm | 14 | |||
GROUND POINTS
| Number | Designation | Model 253 (except 253.99) | ||
|---|---|---|---|---|
| BA00.19-P-1043-01E | Nut, ground line to pin/underfloor | M8 | Nm | 20 |
AUTOMATIC TRANSMISSION COMPLETE
| Number | Designation | Transmission 725.0 | |
|---|---|---|---|
| BA27.10-P-1001-04H | Screw/bolt, transmission to engine | Nm | 39 |
AUTOMATIC TRANSMISSION COMPLETE
| Number | Designation | Transmission 725.0 | |
|---|---|---|---|
| BA27.10-P-1009-04H | Screw/bolt, heat shield to oil pan | Nm | 9 |
EXHAUST SYSTEM
| Number | Designation | Engine 177 in model 253 | |
|---|---|---|---|
| BA49.10-P-1009-02E | Bolt, exhaust system bracket to transmission | Nm | 20 |