Remove/Install DC/DC Converter For 48V On-Board Electrical System - AR54.10-P-1351FR
Model 257, 290
with code B01 (48V technology)
Shown on model 257
Shown on model 257
| Risk of fire /risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC. | No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. |
AS54.10-Z-0001-01A | |
| 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 | |
| Notice | Notes on self-locking nuts and bolts | AH00.00-P-0001-01KOA | |
| Notice | General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment | AH00.00-Z-0300-01A | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notice | Notes on battery | AH54.10-P-0001-01A | |
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Remove | |||
| 1 | Carry out commissioning of DC/DC converter control unit (N83/1). | When replacing the DC/DC converter control unit (N83/1). | |
| AD00.00-P-2000-06FR | |||
| 2 | Detach ground line of on-board electrical system battery. | AR54.10-P-0003FR | |
| 3 | Remove dust filter with air duct segment. | ||
| AP83.00-P-8381C | |||
| 4 | Disconnect electrical connectors (1). | ||
| 5 | Unscrew nuts (2) and remove electric lines (3) from DC/DC converter control unit (N83/1). | ||
| 6 | Remove screws/bolts (4). | ||
| 7 | Disconnect DC/DC converter control unit (N83/1) from 48 V on-board electrical system battery (G1/3). | The DC/DC converter control unit (N83/1) is bonded to the 48 V on-board electrical system battery (G1/3) by the thermal compound applied between them. |
|
| Check | |||
| 8 | Check contact pin (16) and associated contact sleeve in DC/DC converter control unit (N83/1) for damage. | If damage is present, ↓ Replace 48 V on-board electrical system battery (G1/3) or DC/DC converter control unit (N83/1). |
AR54.10-P-0022FR |
| 9 | Check threads (7) for damage and soiling. | If damage is present, ↓ Recut corresponding threads (7). |
|
| 10 | Check seal (8) for damage. | If damage is present, ↓ Replace seal (8). |
|
| 11 | Check contact surface of 48 V on-board electrical system battery (G1/3) for damage. | If damage is present, ↓ Replace 48 V on-board electrical system battery (G1/3). |
AR54.10-P-0022FR |
| 12 | Check contact surface of DC/DC converter control unit (N83/1) for damage. | If damage is present, ↓ Replace DC/DC converter control unit (N83/1) |
|
| Clean | |||
| 13 | Thoroughly clean contact surface of 48 V on-board electrical system battery (G1/3). | When reusing the 48 V on-board electrical system battery (G1/3). |
|
| 14 | Thoroughly clean contact surface of DC/DC converter control unit (N83/1). | When reusing the DC/DC converter control unit (N83/1). |
|
| Install | |||
| 15 | Apply thermal compound onto contact surface of DC/DC converter control unit (N83/1). | AR54.10-P-1351-01FR | |
50 ml double-cartridge gun Thermal compound |
*BR00.45-Z-1002-14A | ||
| 16 | Position DC/DC converter control unit (N83/1) onto 48 V on-board electrical system battery (G1/3) and press down evenly. | ||
| 17 | Screw in screws/bolts (4) | *BA54.10-P-1011-01A | |
| 18 | Connect electric lines (3) to DC/DC converter control unit (N83/1) and attach nuts (2). | *BA54.10-P-1012-01A | |
| 19 | Contact electrical connectors (1). | ||
| 20 | Install dust filter with air duct segment. | ||
| AP83.00-P-8381C | |||
| 21 | Connect ground line of on-board electrical system battery. | AR54.10-P-0003FR |
BATTERY
| Number | Designation | Model 257 | Model 290 | ||
|---|---|---|---|---|---|
| BA54.10-P-1011-01A | Bolt, DC/DC converter control unit to on-board electrical system battery (48V) | M5 | Nm | 6 | 6 |
BATTERY
| Number | Designation | Model 257 | Model 290 | ||
|---|---|---|---|---|---|
| BA54.10-P-1012-01A | Nut, positive line/ground line to DC/DC converter control unit/on-board electrical system battery (48V) | M8 | Nm | 16 | 16 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1002-14A | Thermal compound | A 222 989 00 00 |