Remove/Install Rear Cover On Cylinder Head - AR01.30-P-5702MFG
Engine 139 in model 118, 177, 247
MODIFICATION NOTES
| 08.08.2019 | Operation step adapted. | Operation steps 1, 2, 14, 15 | |
| 22.10.2019 | Method adapted. |
| Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil | Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers. |
AS18.00-Z-0001-01A | |
| Topical note | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Notes on application of flange sealants to seal major assemblies | AH00.00-P-0500-01MNE | ||
| Remove | |||
| 1 | Remove upper engine cover. | ||
| AP01.10-P-2405-01K | |||
| 2 | Remove charge air pipe downstream of exhaust gas turbocharger. | AR09.41-P-1333MFG | |
| 3 | Remove noise insulation above the rear cap from the cylinder head (1). | ||
| 4 | Release and disconnect electrical connectors (3). | The electric lines will otherwise be damaged. |
|
| 5 | Remove bolt (4) and place purge line (5) to one side. | The purge line (5) will otherwise be damaged. |
|
| 6 | Remove screws (2) in reverse order to tightening procedure. | Tightening procedure for cap on cylinder head |
AR01.30-P-5706-01MFG |
| 7 | Remove rear cap from cylinder head (1). | Sealing surfaces will otherwise be damaged. |
|
| Clean | |||
| 8 | Clean sealing surface on the rear cap on the cylinder head (1) using a lint-free cloth. | The sealing surface will otherwise be damaged. Assembly cleaner |
*BR00.45-Z-1028-04A |
| 9 | Clean sealing surface on the cylinder head with a lint-free cloth. | The sealing surface will otherwise be damaged. Assembly cleaner |
*BR00.45-Z-1028-04A |
| Install | |||
| 10 | Modify the camshaft solenoids. | If the rear cap on cylinder head (1) is replaced. | AR05.20-P-7295MFG |
| 11 | Apply a new sealant according to sealant path. | Apply sealant to rear cap on cylinder head | AR01.30-P-0002-01MFG |
Observe notes on sealant path. Sealant, Loctite 5970, 50 ml |
*BR00.45-Z-1013-01A | ||
| Fig 1 | |||
| 12 | Attach the rear cap to cylinder head (1). | ||
| 13 | Screw in screws (2) according to the tightening procedure. | Tightening procedure for cap on cylinder head |
AR01.30-P-5706-01MFG |
| *BA01.30-P-1003-01DA | |||
| 14 | Connect and lock electrical connectors (3). | ||
| 15 | Attach purge line (5) and screw in screw (4). | *BA00.10-P-1002-04A | |
| 16 | Remove noise insulation above the rear cap from the cylinder head (1). | ||
| 17 | Install charge air pipe downstream of the exhaust gas turbocharger. | AR09.41-P-1333MFG | |
| 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 | |
| 18 | Perform engine test run. While doing so, check engine for proper operation and leak tightness. | ||
| 19 | Install upper engine cover. | ||
| AP01.10-P-2405-01K |
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143
| Number | Designation | 8.8 | 10.9 | |
|---|---|---|---|---|
| BA00.10-P-1002-04A | M6x1 | Nm | 9 | 13 |
CYLINDER HEAD
| Number | Designation | Engine 139 | ||
|---|---|---|---|---|
| BA01.30-P-1003-01DA | Bolt, front cover to cylinder head/cylinder head cover | M6 | Nm | 5 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1013-01A | Sealant, Loctite 5970, 50 ml | A 003 989 98 20 10 |
| BR00.45-Z-1028-04A | Assembly cleaner | A 000 986 56 01 |