Remove/install front cover on cylinder head - AR01.30-P-5700MBL
ENGINE 157, 278 in MODEL 216, 221 On the left cylinder head
| Remove/install | |||
| Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. | No parts of the body or limbs should be within the operating area when the components are moving. | AS00.00-Z-0011-01A | |
| Notes on threaded connections with aluminum screws/bolts | AH00.00-P-0006-01RM | ||
| 1 | Remove engine covers | ||
| 2 | Remove left charge air ducts (2) | AR09.41-P-8620MMB | |
| 3 | Detach return line (3) for ABC hydraulic pump and set aside | Vehicles with code 487 (Active Body Control (ABC)) | |
| 4 | Remove oil filter housing | Engine 157 | AR18.20-P-3471MMB |
| 5 | Disconnect electrical connections at camshaft solenoids (Y49/4, Y49/6) and at two-disk thermostat heating element | ||
| 6 | Unclip electrical line (4) on front cover (1l) | ||
| 7 | Remove screw/bolt (1s) on front cover (1) | ||
| *BA01.30-P-1003-01X | |||
| 8 | Carefully loosen front cover (1l) at prying lugs and detach to the front | ||
| Notes on sealant path for front cover to cylinder head xxx | AH01.30-P-1000-02MM | ||
| Loctite 5970 sealant | *BR00.45-Z-1013-01A | ||
| Figure | |||
| Clean | |||
| 9 | Clean sealing surfaces on cylinder head, on cylinder head cover and on front cover (1l) | AR01.00-P-0050-01A | |
Do not use any sharp-edged tools or abrasive paper. The sealing surfaces can be damaged otherwise. |
|||
| Loctite 7200 | *BR00.45-Z-1038-04A | ||
| Loctite 7063 cleaning spray (150 ml) | *BR00.45-Z-1046-04A | ||
| 10 | Detach camshaft solenoids (Y49/4, Y49/6) from front cover (1l) | When replacing the front cover (1) | |
| AR05.20-P-7295MMB | |||
| 11 | Install in the reverse order | ||
| Check | |||
| 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 | |
| 12 | Carry out engine test run while checking engine for function and oil leaks |
CYLINDER HEAD
| Number | Designation | ENGINE 157 | ENGINE 278 | |
|---|---|---|---|---|
| BA01.30-P-1003-01X | Bolt, front cover to cylinder head/cylinder head cover | Nm | 5 | 5 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1013-01A | Loctite 5970 sealant | A 003 989 98 20 |
| BR00.45-Z-1038-04A | Loctite 7200 | Henkel Loctite Deutschland GmbH |
| BR00.45-Z-1046-04A | Loctite 7063 cleaning spray (150 ml) | A 001 986 71 71 10 |