Remove/install front cover on right cylinder head - AR01.30-P-5700GZC (ML350, ML550, GL450, GL550)
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ENGINE 272, 273 in MODEL 164, 251
Right cylinder head
Shown without air filter
Fig 1: Identifying Front Cover On Cylinder Head Remove/Install Components (Shown Without Air Filter)
| Remove/install | |||
|---|---|---|---|
| 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 | |
| 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 | Remove front engine cover and right engine intake air duct | ||
| 3 | Remove aspirator shutoff valve (1) at right cylinder head | AR14.30-P-7200GZA | |
| 4 | Remove bolts (2a) and lay bracket (2) for front engine cover with air pump switchover valve (Y32) aside | ||
| *BA01.30-P-1009-01O | |||
| 5 | Remove hose (3) | ||
| 6 | Disconnect electrical connectors at right camshaft intake solenoid (Y49/5) and at right camshaft exhaust solenoid (Y49/7) | ||
| 7 | Disconnect electrical connectors at right intake camshaft Hall sensor (B6/5) and at right exhaust camshaft Hall sensor (B6/7) | ||
| 8 | Unscrew oil dipstick guide pipe (5) on front cover (4) | *BA01.30-P-1006-01O | |
| 9 | Undo bolts (4a) on front cover (4) | ||
| *BA01.30-P-1006-01O | |||
| 10 | Carefully loosen front cover (4) on lifting lugs (4b) 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 | |||
| 11 | Clean sealing surfaces on front cover (4), on cylinder head cover and on cylinder head | ||
| Loctite 7200 | *BR00.45-Z-1038-04A | ||
| 12 | Remove right intake camshaft Hall sensor (B6/5) and right exhaust camshaft Hall sensor (B6/7) | ||
| *BA15.10-P-1002-03E | |||
| 13 | Remove right camshaft intake solenoid (Y49/5) and right camshaft exhaust solenoid (Y49/7) | ||
| *BA15.10-P-1003-03E | |||
| 14 | 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 | |
| 15 | 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 |
| BA01.30-P-1009-01O | Bolt, switchover valve bracket 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 |