Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Remove/Install Alternator - AR15.40-P-5032MNI
2021 Mercedes Benz GT 53 AMGSECTION Remove/Install Alternator - AR15.40-P-5032MNI
Engine 177.9 in model 290
| 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 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 | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notice | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Remove/install | |||
| 1 | Disconnect ground line from battery. | AR54.10-P-0003FR | |
| 2 | Remove guide pulley for poly-V-belt of alternator (G2). | AR13.20-P-0011MNI | |
| 3 | Release and disconnect electrical connector (3). | ||
| 4 | Remove contact protection of nut (4). | ||
| 5 | Remove electrical line B+ (5) from alternator (G2). | *BA15.40-P-1003-01T | |
| 6 | Remove screw (1). | ||
| 7 | Remove front bumper. | AR88.20-P-2000FR | |
| 8 | Release and disconnect electrical connectors (6). | ||
| 9 | Remove screws (7) and remove radiator shutters (8). | ||
| 10 | Remove screws (9) and remove struts (10). | *BA62.30-P-1003-01H | |
| 11 | Remove cable strap (11) from right underfloor paneling bracket (12) and remove underfloor paneling brackets (12) in downward direction. | ||
| 12 | Remove air duct segment (13). | ||
| 13 | Remove radiator package from radiator mounting brackets and push upwards. | Antifriction paste, rubber parts 2.5 kg, DBL 6867.00 |
*BR00.45-Z-1002-06A |
| 14 | Remove alternator (G2) downward. | ||
| 15 | Install in the reverse order. | ||
| 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 | |
| 16 | Perform engine test run; while doing so, check alternator (G2) for proper operation. | AR15.40-P-5001MNI |
ALTERNATOR
| Number | Designation | Engine 177 | |
|---|---|---|---|
| BA15.40-P-1003-01T | Nut, positive line to alternator | Nm | 16 |
CROSS MEMBER AND FRONT REINFORCEMENT
| Number | Designation | Model 290 | ||
|---|---|---|---|---|
| BA62.30-P-1003-01H | Bolt, strut to cross member | M8 | Nm | 20 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1002-06A | Antifriction paste, rubber parts 2.5 kg, DBL 6867.00 | A 000 989 01 60 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.