Remove/install front cover on left cylinder head - AR01.30-P-5700GZA (ML350, ML550, GL450, GL550)
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ENGINE 272, 273 in MODEL 164, 251
Left cylinder head
Shown without air filter housing
Fig 1: Identifying Front Cover On Cylinder Head Remove/Install Components (Shown Without Air Filter Housing)
| Remove/install | |||
|---|---|---|---|
| Risk of death caused by vehicle slipping or toppling off the lifting platform. | Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. | AS00.00-Z-0010-01A | |
| Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof. | Keep body parts and limbs well clear of moving parts. | AS00.00-Z-0011-01A | |
| Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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 | |
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| 1 | Turn key in ignition lock to position "0" | Press Keyless Go start/stop button repeatedly until ignition is switched off. |
|
| 2 | Drain coolant at radiator | AR20.00-P-1142GZC | |
| Notes on coolant | AH20.00-N-2080-01A | ||
| 3 | Remove front engine cover and left engine intake air duct | ||
| 4 | Remove poly-V belt (1) and poly-V belt tensioning device (2) | AR13.20-P-0001GZA | |
| 5 | Remove coolant hose (8) | ||
| 6 | Remove coolant thermostat housing (3) | AR20.10-P-2460GZA | |
| 7 | Remove oil filter housing (4) | AR18.20-P-3471GZA | |
| 8 | Remove power steering expansion reservoir (5) | Model 164 | AR46.25-P-1000GZA |
| Model 251 | AR46.25-P-1000RT | ||
| 9 | Disconnect electrical connectors on left intake camshaft Hall sensor (B6/4) and left exhaust camshaft Hall sensor (B6/6) | ||
| 10 | Disconnect electrical connectors on left camshaft intake solenoid (Y49/4) and left camshaft exhaust solenoid (Y49/6) | ||
| 11 | Detach clamp (6) | ||
| 12 | Undo bolts (7a) on front cover (7) | *BA01.30-P-1006-01O | |
| 13 | Carefully loosen front cover (7) on lifting lugs (7b) and detach to the front | ||
| Notes on sealant path for front cover to cylinder head | AH01.30-P-1000-02V | ||
| Fig 2 | |||
| Sealant | *BR00.45-Z-1013-01A | ||
| Clean | |||
| 14 | Clean sealing surfaces on cylinder head, on cylinder head cover and on front cover (7) | ||
| Loctite 7200 | *BR00.45-Z-1038-04A | ||
| 15 | Detach left intake camshaft Hall sensor (B6/4) and left exhaust camshaft Hall sensor (B6/6) from front cover (7) | ||
| *BA15.10-P-1002-03E | |||
| 16 | Detach left camshaft intake solenoid (Y49/4) and left camshaft exhaust solenoid (Y49/6) from front cover (7) | ||
| *BA15.10-P-1003-03E | |||
| 17 | Install in the reverse order | ||
| Checking | |||
| Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running | Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. |
AS00.00-Z-0005-01A | |
| 18 | Conduct engine test run and check the engine for leaks |
CYLINDER HEAD
| Number | Designation | Engine 272 | Engine 273 | ||
|---|---|---|---|---|---|
| BA01.30-P-1006-01O | Bolt, front cover to cylinder head | M6 | Nm | 9 | 9 |
POSITION SENSOR
| Number | Designation | Engine 272 | Engine 273 | |
|---|---|---|---|---|
| BA15.10-P-1002-03E | Bolt, camshaft Hall sensor to front cover on cylinder head | Nm | 8 | 8 |
| BA15.10-P-1003-03E | Bolt, camshaft solenoid to front cover to cylinder head | Nm | 8 | 8 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1013-01A | Sealant | A 003 989 98 20 |
| BR00.45-Z-1038-04A | Loctite 7200 | Henkel Loctite Deutschland GmbH Arabellastrasse 17 81925 Munchen Germany Tel. +49-899268-0 Fax +49-899101978 www.Loctite.de |