Remove/install belt drive components - AR13.20-P-0001GZA (ML350, ML550, GL450, GL550)
WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.
ENGINES 272, 273 in MODEL 164, 251
| Removing | |||
|---|---|---|---|
| Danger! | Risk of injury caused by moving parts that can pinch, crush or, in extreme cases, even sever extremities | No parts of the body or limbs should be within the operating range of the mechanism when moving components. | - |
| 1 | Remove front engine cover | ||
| 2 | Detension poly-V belt (2), remove and detension tensioner pulley (3) | To do this use a hexagon (2) on the poly-V belt tensioning device (4). | |
| Checking | |||
| 3 | Check profile of belt pulley and poly-V belt tensioning device (4) for damage and soiling | ||
| 4 | Check poly-V belt (2) for wear and damage and replace if necessary Check visible area of poly-V belt for wear | AP13.22-P-1352GZC | |
| Removing/installing | Only perform steps 5 through 9 for remove/ install of poly-V belt tensioning device (4). | ||
| 5 | Remove electric fan | Model 164 with engine 273 | AR20.40-P-5000GZA |
| 6 | Lock poly-V belt tensioning device (4) | Swivel poly-V belt tensioning device (4) at hexagon (2a) in an anti-clockwise direction and lock in place using drift (03). | |
| 7 | Remove bolts (2b) and poly-V belt tensioning device (4) | Nm | *BA13.25-P-1001-01P |
| 8 | Unclamp poly-V belt tensioning device (4) | When replacing poly-V belt tensioning device (4) Clamp poly-V belt tensioning device (4) in a vise, swivel at hexagon (2a) in an counter-clockwise direction, pull out drift (03) and slacken poly-V belt tensioning device (4). Installation: The poly-V belt tensioning device (4) can only be installed when locked. |
|
| 9 | Install in the reverse order | ||
| Removing/installing | Only perform steps 10 through 12 for remove/install of guide pulleys (5). | ||
| 10 | Remove covers for guide pulleys (5) | ||
| 11 | Remove bolts to guide pulleys (5) from coolant pump and take off | Nm | *BA20.10-P-1004-01U |
| Installing | |||
| 12 | Install in reverse order | ||
| 13 | Fit on and tension (2) as per routing diagram and tension | To do this use a hexagon (2) on the poly-V belt tensioning device (4). Do not use wax or similar products, as this may cause poly-V belt (2) to slip. |
AR13.22-P-3902-02VA |
| 14 | Fit front engine cover |
BELT TENSIONING DEVICE
| Number | Designation | Nm |
|---|---|---|
| BA13.25-P-1001-01P | Bolt from poly-V belt tensioning device to timing case cover | 35 |
BELT TENSIONING DEVICE
| Number | Designation | Nm | |
|---|---|---|---|
| BA20.10-P-1004-01U | Bolt, guide pulley between water pump and belt tensioner | Initial installation: | 35 |
| Follow-up operations: | 25 | ||