Remove/Install DC/DC Converter - AR54.10-P-1350LVH
Model 253.354/954
MODIFICATION NOTES
| 05.02.2018 | Nut, positive line to DC/DC converter | Model 253 with code ME05 (HYBRID DRIVE, 80KW VARIANT (INCLUDING PLUG-IN)) | BA54.10-P-1010-02H |
Shown with code 550 (Trailer hitch)
| Risk of injury
to skin and eyes suffering scalding from contact with hot coolant spray. 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 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 | |
| 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 coolant | AH20.00-N-2080-01A | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Notes on battery | AH54.10-P-0001-01A | ||
| Remove/install | |||
| 1 | Perform disable for the high-voltage on-board electrical system | AR54.10-P-1150LVH | |
| 2 | Drain coolant for high-voltage battery cooling system | AR20.00-P-1147LVH | |
| 3 | Unhook fuse and relay module (2) from bracket (3) and place to one side | ||
| 4 | Detach trailer recognition control unit (11) from bracket (3) and place to one side with electrical lines connected | Model 253.354/954 with code 550 (Trailer coupling) |
|
| AR31.19-P-1300LWG | |||
| 5 | Remove bracket (3) | *BA54.10-P-1016-02H | |
| 6 | Remove screws/bolts (4) and push DC/DC converter (1) slightly towards the rear | *BA54.10-P-1009-02H | |
| 7 | Disconnect coolant line (5) from DC/DC converter (1) | ||
| 8 | Disconnect coolant hose (6) from DC/DC converter (1) | ||
| 9 | Disconnect electrical connector (7) | ||
| 10 | Disconnect high-voltage connector (8) from DC/DC converter (1) | ||
| 11 | Cover high-voltage connector (8) and connection on DC/DC converter (1) with protective covers | Figure | |
| Figure | |||
| 12 | Disconnect ground line (9) from DC/DC converter (1) | *BA54.10-P-1011-02H | |
| 13 | Disconnect electrical line (10) from DC/DC converter (1) | *BA54.10-P-1010-02H | |
| 14 | Remove DC/DC converter (1) | ||
| Clean | |||
| 15 | Clean load compartment and components with a dry cloth | ||
| 16 | Install in the reverse order |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 253 with code ME02 (Fuel cell) | Model 253 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|---|
| BA54.10-P-1009-02H | Bolt, DC/DC converter to retaining plate | Nm | 20 | 20 |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 253 with code ME02 (Fuel cell) | Model 253 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|---|
| BA54.10-P-1010-02H | Nut, positive line to DC/DC converter | Nm | 20 | 20 |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 253 with code ME02 (Fuel cell) | Model 253 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|---|
| BA54.10-P-1011-02H | Bolt, ground line to DC/DC converter | Nm | 16 | 16 |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 253 with code ME02 (Fuel cell) | Model 253 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|---|
| BA54.10-P-1016-02H | Nut, bracket for fuse and relay module to bracket for DC/DC converter | Nm | 23 | 23 |