Remove/Install Integrated Starter Alternator Control Unit - AR15.40-P-0004MSA
Engine 256.9 in model 213, 238, 257, 290
MODIFICATION NOTES
| 14.07.2020 | Insertion of an operation step variant for the removal/installation of the catalytic converter/exhaust gas aftertreatment unit | Operation step 3.1/3.2 | |
| 31.03.2020 | Screw, holder for wiring harness (integrated starter alternator/refrigerant compressor/transmission) to crankcase | BA15.40-P-1014-02MRT |
| Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant. | Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. | AS20.00-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 | |
| Topical note | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Topical note | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Remove/install | |||
| 1 | Disconnect ground line of the battery (G1). | Engine 256.9 in model 213 | AR54.10-P-0003LW |
| Engine 256.9 in model 238 | AR54.10-P-0003LWO | ||
| Engine 256.9 in model 257, 290 | AR54.10-P-0003FR | ||
| 2 | Drain off low-temperature circuit coolant. | AR09.41-P-6834MSA | |
| 3.1 | Remove the catalytic converter. | Engine 256.9 in model 213, 238 up to model year 2020 Engine 256.9 in model 257, 290 |
|
| AR49.20-P-0100MSA | |||
| 3.2 | Remove exhaust gas aftertreatment unit. | Engine 256.9 in model 213, 238 as of model year 2020 | |
| AR49.20-P-1500MSA | |||
| 4 | Remove heat shield above starter-alternator control unit (N129). | *BA22.10-P-1004-02A | |
| 5 | Remove coolant lines (1, 2) from the starter-alternator control unit (N129) and seal openings using suitable protective covers. | AR20.20-P-7441-01RQ | |
| Fig 2 | |||
| 6 | Remove coolant line (2) from the timing case cover, place to one side and seal openings with suitable protective covers. | AR20.20-P-7441-01RQ | |
| *BA15.40-P-1009-02MRT | |||
| Fig 2 | |||
| 7 | Remove coolant line (1) from the crankcase, place to one side and seal openings with suitable protective covers. | AR20.20-P-7441-01RQ | |
| *BA15.40-P-1010-02MRT | |||
| Fig 2 | |||
| 8 | Release and disconnect electrical connector (4). | ||
| 9 | Open cover caps of the electric lines, unscrew nuts (3) and remove electric lines from the starter-alternator control unit (N129). | *BA15.40-P-1011-02MRT | |
| 10 | Remove bracket (7) and place 48 V wiring harness (5) to one side. | *BA15.40-P-1014-02MRT | |
| *BA00.10-P-1002-04A | |||
| 11 | Remove bracket (6). | *BA49.10-P-1007-02P | |
| 12 | Remove screws (10) and remove cap (11). | ||
| *BA15.40-P-1004-02MRT | |||
| 13 | Release and disconnect electrical connector (12). | Press release mechanism in arrow direction A Otherwise, damage to the starter-alternator control unit (N129) will occur. |
|
| 14 | Remove screws (13). | *BA15.40-P-1008-02MRT | |
| 15 | Remove screws (14) and remove starter-alternator control unit (N129). | ||
| *BA15.40-P-1005-02MRT | |||
| 16 | Install in the reverse order. | ||
| 17 | Read out and delete fault memory. | ||
| Engine 256.9 in model 213 | AD00.00-P-2000-04B | ||
| Engine 256.9 in model 238 | AD00.00-P-2000-06LWO | ||
| Engine 256.9 in model 257, 290 | AD00.00-P-2000-06FR | ||
| Risk of burn injuries , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust. | Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area. | AS49.00-Z-0001-01A | |
| 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 | |
| 18 | Carry out engine test run and check engine for proper operation and leak tightness. |
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143
| Number | Designation | 8.8 | 10.9 | |
|---|---|---|---|---|
| BA00.10-P-1002-04A | M6X1 | Nm | 9 | 13 |
STARTER-ALTERNATOR
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA15.40-P-1004-02MRT | Bolt, terminal box cover to starter-alternator control unit | Nm | 8 |
STARTER-ALTERNATOR
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA15.40-P-1005-02MRT | Bolt, starter-alternator control unit to crankcase/timing case | Nm | 8 |
STARTER-ALTERNATOR
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA15.40-P-1008-02MRT | Phase bolt on inverter | Nm | 11 |
STARTER-ALTERNATOR
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA15.40-P-1009-02MRT | Bolt, coolant return line to timing case | Nm | 8 |
STARTER-ALTERNATOR
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA15.40-P-1010-02MRT | Bolt, coolant feed pipe to crankcase | Nm | 8 |
STARTER-ALTERNATOR
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA15.40-P-1011-02MRT | Nut, circuit 40/41 to starter-alternator control unit | Nm | 16 |
STARTER-ALTERNATOR
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA15.40-P-1014-02MRT | Bolt, holder for wiring harness (integrated starter alternator/refrigerant compressor/transmission) to crankcase | Nm | 12 |
STARTER-ALTERNATOR ENGINE SUPPORT (ENGINE SIDE)
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA22.10-P-1004-02A | Screw, heat shield to crankcase/catalytic converter bracket/engine mount heat shield | Nm | 8 |
EXHAUST SYSTEM
| Number | Designation | Model 213 with engine 256 | Model 238 with engine 256 | |
|---|---|---|---|---|
| BA49.10-P-1007-02P | Nut/bolt, holder for catalytic converter to crankcase | Nm | 20 | 20 |
EXHAUST SYSTEM
| Number | Designation | Model 257 with engine 25620 | Model 290 with engine 256 | |
|---|---|---|---|---|
| BA49.10-P-1007-02P | Nut/bolt, holder for catalytic converter to crankcase | Nm | 20 | |