Remove/Install Left Fuel Rail - AR07.03-P-1011WA
Engine 276.8 in model 172
| 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 | |
| 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 | |
| Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| General information on work on gasoline direct injection system | AH07.00-P-2000-01A | ||
| Remove | |||
| 1 | Detach battery ground line | AR54.10-P-0003W | |
| 2 | Remove left-hand air filter housing | AR09.10-P-1150RKA | |
| 3 | Remove soundproofing on left rail (1) | ||
| 4 | Relieve fuel pressure over diagnostic socket | AR07.03-P-1460-01VA | |
| Fig 4 | |||
| 5 | Relieve fuel pressure over fuel system high-pressure circuit | AR07.03-P-1460-02MM | |
| 6 | Remove crash plate for high-pressure pump | AR07.02-P-1020WA | |
| 7 | Unscrew high-pressure line (4) on left rail (1) | ||
| 8 | Release and disconnect electrical connection on fuel pressure and temperature sensor | AR07.04-P-0050W | |
| 9 | Release and disconnect electrical connections on fuel injectors (Y76) of left rail (1) | AR07.03-P-0004W | |
| 10 | Release and disconnect electrical connections for ignition coils at left cylinder bank | AR15.12-P-2003W | |
| 11 | Remove screw/bolts (1s) by turning each one through half a turn | Otherwise damage can occur to the left rail (1). |
|
| 12 | Remove hold-down tool (3) between left rail (1) and fuel injectors (Y76) | ||
| 13 | Mark fuel injectors (Y76) of left cylinder rail (1) relative to the respective cylinder | When reusing the fuel injectors (Y76) on the left rail (1). | |
| 14 | Detach left rail (1) from fuel injectors (Y76) of left rail (1) | ||
| 15 | Remove fuel injectors (Y76) of left rail (1) | AR07.03-P-0004W | |
in the case of jammed fuel injectors (Y76) of the left rail (1) ↓ Remove fuel injectors (Y76) of the left rail (1). |
AR07.03-P-0004-03MM | ||
| Fig 3 | |||
| Clean | |||
| 16 | Clean fuel connections on fuel injectors (Y76) of the left rail (1) | This ensures that no dirt gets into the openings. Assembly cleaner |
*BR00.45-Z-1028-04A |
| Check | |||
| 17 | Check high-pressure line (4) and replace if necessary | AR07.03-P-1010-03MM | |
| Assembly cleaner | *BR00.45-Z-1028-04A | ||
| Install | |||
| 18 | Replace sealing packages for the fuel injectors (Y76) on left rail (1) | AR07.03-P-0004-02MM | |
| Assembly cleaner | *BR00.45-Z-1028-04A | ||
| Fig 5 | |||
| 19 | Replace sealing rings (11) on fuel injectors (Y76) of the left rail (1) | ||
| 20 | Replace seals (12) on fuel injectors (Y76) of the left rail (1) | ||
| 21 | Replace sealing rings (13) on fuel injectors (Y76) of the left rail (1) | AR07.03-P-0004-01MM | |
| Assembly cleaner | *BR00.45-Z-1028-04A | ||
| Fig 2 | |||
| 22 | Replace seal (2) on overflow connector of the left rail (1) | ||
| 23 | Insert the fuel injectors (Y76) of the left rail (1) marked during removal in the left rail (1) and fasten with hold-down tools (3) | When reusing the fuel injectors (Y76) of the left rail (1). |
|
| 24 | Push new fuel injectors (Y76) of the left rail (1) in the left rail (1) and fasten with hold-down tools (3) | For replacing the fuel injectors (Y76) of the left rail (1). |
|
| 25 | Push left rail (1) with fuel injectors (Y76) of the left rail (1) in cylinder head | ||
| 26 | Screw in screw/bolts (1s) alternately each by half a revolution | Otherwise damage to the left rail (1) can occur. |
*BA07.52-P-1001-01G |
| 27 | Put on and lock electrical connections for ignition coils at left cylinder bank | AR15.12-P-2003W | |
| 28 | Put on and lock electrical connections on fuel injectors (Y76) of left rail (1) | AR07.03-P-0004W | |
| 29 | Put on and lock electrical connection on fuel pressure and temperature sensor | AR07.04-P-0050W | |
| 30 | Mount high-pressure line (4) on left rail (1) | *BA07.03-P-1001-01D | |
| 31 | Install crash plate for high-pressure pump | AR07.02-P-1020WA | |
| 32 | Mount cap on diagnostic socket | *BA07.03-P-1007-01D | |
| 33 | Install soundproofing on left rail (1) | ||
| 34 | Install left-hand air filter housing | AR09.10-P-1150RKA | |
| 35 | Mount ground line to battery | AR54.10-P-0003W | |
| 36 | Read out fault memory using the diagnostic system and clear if necessary | ||
| AD00.00-P-2000-04A | |||
| Check | |||
| 37 | Check fuel high-pressure circuit for leak tightness. | AR07.03-P-1010-04MM | |
| 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 | |
| 38 | Carry out an engine test run, checking the engine for proper operation and leak tightness |
INJECTION NOZZLES, INJECTION VALVES, LINES
| Number | Designation | Engine 276 | ||
|---|---|---|---|---|
| BA07.03-P-1001-01D | Union nut, fuel line to fuel distributor | Stage 1 | Nm | 15 |
| Stage 2 | ∠° | 90 | ||
INJECTION NOZZLES, INJECTION VALVES, LINES
| Number | Designation | Engine 276 | ||
|---|---|---|---|---|
| BA07.03-P-1007-01D | Cap on service connection | Plastic | Nm | 2 |
| Metal | Nm | 15 | ||
FUEL DISTRIBUTOR
| Number | Designation | Engine 276 | |
|---|---|---|---|
| BA07.52-P-1001-01G | Screw/bolt, fuel distributor to cylinder head cover | Nm | 9 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1028-04A | Assembly cleaner | A 000 986 56 01 |