Remove/Install Left High-Pressure Fuel Pump - AR07.02-P-1023MNG
Engine 177 in Model 253
| 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 | |
| Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contact with fuel. | No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel. |
AS47.00-Z-0001-01A | |
| Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure | Keep all ignition sources out of hazard area. Do not carry out any work on system when it is pressurized. |
AS07.16-Z-0001-01A | |
| Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| 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. ZJ ZJ |
AS18.00-Z-0001-01A | |
| Risk of injury caused by scraping or cutting body parts on sharp Vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred Vehicle parts. Deburr repair panels. |
AS00.00-Z-0017-01A | |
| Notes on threaded connections fastened using a tightening angle-based tightening process | AH00.00-P-0020-01A | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | AH00.00-P-0015-01CW | ||
| General information on work on gasoline direct injection system | AH07.00-P-2000-01A | ||
| Remove/install | |||
| 1 | Remove left low-pressure line and service connection from the cylinder head cover and fuel high-pressure pump (5) and place outside the working area | AR07.03-P-1121MNG | |
| 2 | Remove rear left engine lifting lug | AR01.20-P-5010-02MNG | |
| *BA01.30-P-1003-01N | |||
| 3 | Release and disconnect electrical connection (6) | ||
| 4 | Remove brackets (10) from the cylinder head cover and place electric line outside the working area | ||
| 5 | Remove stud bolt (4) | Insertion/attachment tool |
*BA00.10-P-1002-04A |
| 6 | Remove bracket (3) from high-pressure line (9) | ||
| 7 | Release and disconnect electrical connector on cylinder 8 fuel injector (Y76/8) and place to one side | ||
| 8 | Remove brackets (11) | *BA07.03-P-1004-01H | |
| 9 | Clean area around high-pressure line (9) | Failure can occur otherwise to the fuel system. Assembly cleaner |
*BR00.45-Z-1028-04A |
| 10 | Clean area around fuel high-pressure pump (5) | Failure can occur otherwise to the fuel system. Assembly cleaner |
*BR00.45-Z-1028-04A |
| 11 | Relieve fuel pressure in fuel system high-pressure circuit | AR07.03-P-1460-02MM | |
| 12 | Remove high-pressure line (9) from the fuel high-pressure pump (5) and rail (8) and seal openings with suitable stop plugs | *BA07.03-P-1001-01H | |
| Figure | |||
| Figure | |||
| 13 | Remove screws (7) and remove fuel high-pressure pump (5) upwards | Fuel high-pressure pump (5) will otherwise be damaged. |
*BA07.02-P-1001-01E |
| 14 | Install in the reverse order | ||
| 15 | Read out and erase fault memory | AD00.00-P-2000-04B | |
| 16 | Check fuel high-pressure circuit for leaktightness | AR07.03-P-1010-04MM | |
| AD00.00-P-2000-04B | |||
| 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 | |
| 17 | Perform an engine test run and check engine for proper operation and leaktightness |
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 177 | |
|---|---|---|---|
| BA01.30-P-1003-01N | Bolt, heat shield/rear lifting eye to cylinder head M6 | Nm | 9 |
INJECTION PUMP, HIGH-PRESSURE FUEL PUMP
| Number | Designation | Engine 177 | |
|---|---|---|---|
| BA07.02-P-1001-01E | Bolt, fuel system high pressure pump to cylinder head | Nm | 14 |
INJECTION NOZZLES, INJECTION VALVES, LINES
| Number | Designation | Engine 177 | |||
|---|---|---|---|---|---|
| BA07.03-P-1001-01H | Union nut, fuel line to fuel distributor/fuel system high-pressure pump | In case of reusability | Nm | 22 | |
| For new lines | Stage 1 | Nm | 15 | ||
| Stage 2 | ∠° | 90 | |||
INJECTION NOZZLES, INJECTION VALVES, LINES
| Number | Designation | Engine 177 | |
|---|---|---|---|
| BA07.03-P-1004-01H | Bolt, fuel line clamp to engine/bracket | Nm | 9 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1028-04A | Assembly cleaner | Adolf Wurth GmbH & Co. KG |