Remove/Install Automatic Transmission - AR27.10-P-0005LVH
Transmission 724.2 in model 253 with engine 274.9
| 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 | |
| Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | AS00.00-Z-0010-01A | |
| 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 death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) | Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. | AS00.00-Z-0035-01A | |
| Notes on self-locking nuts and bolts | AH00.00-N-0001-01A | ||
| General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system | AH00.00-Z-0300-01A | ||
| Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Notes on battery | AH54.10-P-0001-01A | ||
| Notes on automatic transmission | AH27.19-P-0001-01NKB | ||
| Remove/install | |||
| 1 | Move selector lever to position N | ||
| 2 | Release parking brake | ||
| 3 | Unclip engine air intake duct from front crossmember | ||
| 4 | Perform disable for the high-voltage on-board electrical system | Model 253.954 with engine 274.9 with transmission 724.2 | AR54.10-P-1150LVH |
| 5 | Detach ground line of on-board electrical system battery | AR54.10-P-0003LW | |
| 6 | Secure vehicle on vehicle lift | AR00.60-P-0100CW | |
| 7 | Remove center engine compartment paneling and rear engine compartment paneling with bracket | AR61.20-P-1105LW | |
| 8 | Detach ground lines (2) from transmission (1) | *BA27.10-P-1028-04G | |
| 9 | Unlock and separate electrical connection (33) at electrical machine temperature sensor and create access to line | ||
| 10 | Remove exhaust system center | AR49.10-P-7283RF | |
| 11 | Remove heat shield | AR27.40-P-0700-01LF | |
| 12 | Unlock electrical connector (4) at electrohydraulic controller unit, disconnect and unclip electrical line from transmission (1) | ||
| 13 | Detach oil lines from transmission (1) and oil pan, and set aside | AR27.55-P-0600LWH | |
| 14 | Detach drive shaft from front axle transmission and secure on transmission | AR41.10-P-0070LW | |
| 15 | Remove lower engine cross member from under floor | AR22.10-P-4360LWB | |
| Notes on bolted connections with self tapping screws | AH00.00-P-0007-01SF | ||
| 16 | Lash down transmission (1) | ||
| 17 | Remove center of heat shield | ||
| 18 | Unclip holder for 3-phase high-voltage line (5) at 3 points | ||
| 19 | Detach drive shaft flexible coupling from the transmission | AR41.10-P-0040-01LW | |
| Drift for releasing the fitted sleeves in the flexible couplings | WF58.50-P-4110-01A | ||
| *BA41.10-P-1001-01L | |||
| Fig 1 | |||
| 20 | Carefully lower transmission (1) slightly | ||
| 21 | Remove bolt (10a) and remove cover (10) | *BA08.10-P-1002-01F | |
| 22 | Unclip starter wiring harness from holder (6) and place to one side | ||
| 23 | Detach high-voltage plug (29a) of 3-phase high-voltage lines from electrical machine and place at right, next to the transmission (1) | Otherwise the high voltage on-board electrical system may be damaged. |
|
| *BA08.10-P-1003-01F | |||
| 24 | Detach starter at transmission (1) and place to one side | AR15.30-P-7100LWA | |
| 25 | Unscrew bolts (1a) and remove transmission (1) from below | ||
| *BA27.10-P-1001-04G | |||
| Anticorrosion grease 40 g/DB supply specification 6834.00 | *BR00.45-Z-1006-06A | ||
| 26 | Install in the reverse order | ||
| 27 | Perform transmission adaptation using diagnostic system | After replacing the transmission (1) or the electrical machine rotor position sensor or the electrical machine | |
| AD00.00-P-2000-04B | |||
| Check | |||
| 28 | Check oil level in transmission (1) and correct | AR27.00-P-0270EH | |
| 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 | |
| 29 | Test run engine and check transmission (1) for leaktightness and proper operation Electric motor |
ELECTRIC MOTOR
| Number | Designation | Model 253 (except 253.992/993) with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|
| BA08.10-P-1002-01F | Bolt, hoop guard to transmission | Nm | 15 |
ELECTRIC MOTOR
| Number | Designation | Model 253 (except 253.992/993) with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|
| BA08.10-P-1003-01F | Bolt, 3-phase high-voltage line to electrical machine housing | Nm | 12 |
AUTOMATIC TRANSMISSION COMPLETE
| Number | Designation | Transmission 724.2 | |
|---|---|---|---|
| BA27.10-P-1001-04G | Bolt/nut, transmission to engine | Nm | 39 |
AUTOMATIC TRANSMISSION COMPLETE
| Number | Designation | Transmission 724.2 | |
|---|---|---|---|
| BA27.10-P-1028-04G | Bolt, ground line to transmission housing | Nm | 20 |
PROPELLER SHAFT
| Number | Designation | Model 253 | |||
|---|---|---|---|---|---|
| BA41.10-P-1001-01L | Flex disk or joint flange at transmission/rear axle differential or propeller shaft | Self-locking nut | Nm | - | |
| Direct threaded connection | Stage 1 | Nm | 60 | ||
| Stage 2 | ∠° | 90 | |||
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1006-06A | Anticorrosion grease 40 g/DB supply specification 6834.00 | A 001 989 37 51 10 |