Remove/Install High-Pressure Fuel Pump - AR07.02-P-1020WA
Engine 276.8 in model 172
| 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 | |
| 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 | Detach charge air cooler and place with attached coolant lines to one side | AR09.41-P-6819RKA | |
| 3 | Position piston of cylinder 1 to a 40° crank angle (CKA) after ignition TDC | AR05.10-P-7620-04MM | |
| 4 | Remove left and right air filter housing | AR09.10-P-1150RKA | |
| 5 | Remove right rail insulation | ||
| 6 | Relieve fuel pressure over diagnostic socket | AR07.03-P-1460-01VA | |
| Fig 2 | |||
| 7 | Relieve fuel pressure in fuel system high-pressure circuit | AR07.03-P-1460-02MM | |
| 8 | Remove engine wiring harness on crash plate (3) | ||
| 9 | Unclip oxygen sensor wiring harness from crash plate (3) | ||
| 10 | Release and disconnect left electrical connection at ME-SFI [ME] control unit | AR07.08-P-1000W | |
| 11 | Unclip electrical line of ME-SFI [ME] control unit on ME-SFI [ME] control unit bracket and place to one side | ||
| 12 | Unclip ME-SFI [ME] control unit from bracket and place to one side with attached lines | AR07.08-P-1000W | |
| 13 | Remove bracket (2) at crash plate (3) and vacuum pump (7) | ||
| 14 | Remove screw/bolts (1) and remove crash plate (3) | ||
| 15 | Remove insulation on high-pressure pump (7) | ||
| 16 | Remove high-pressure line from high-pressure pump (7) on right rail | ||
| 17 | Detach low-pressure line at high-pressure pump (7) | ||
| 18 | Release and disconnect electrical connector at quantity control valve (6) | ||
| 19 | Remove high-pressure pump (8) screw/bolts (7) and the high-pressure pump (7) | Failure can occur otherwise to the fuel system. Otherwise damage could occur to the high-pressure pump (7). Assembly cleaner |
*BR00.45-Z-1028-04A |
| 20 | Pull tappet element (5) out of high-pressure pump housing (4) | ||
| Check | |||
| 21 | Check tappet element (5) for damage | If damage is present ↓ replace tappet element (5). |
|
| 22 | Check high-pressure lines | AR07.03-P-1010-03MM | |
| Assembly cleaner | *BR00.45-Z-1028-04A | ||
| Clean | |||
| 23 | Clean mount for high-pressure pump (7) in high-pressure pump housing (4) | Assembly cleaner | *BR00.45-Z-1028-04A |
| Install | |||
| 24 | Push tappet element (5) in high-pressure pump housing (4) | ||
| 25 | Replace sealing ring of high-pressure pump (7) | ||
| 26 | Attach high-pressure pump (7) to high-pressure pump housing (4) and tighten screw/bolts (8s) for high-pressure pump (7) | Otherwise damage could occur to the high-pressure pump (7). |
*BR00.45-Z-1028-04A |
| *BA07.02-P-1001-01C | |||
| 27 | Put electrical connection onto quantity control valve (6) and lock | ||
| 28 | Mount low-pressure line on high-pressure pump (7) | *BA07.03-P-1002-01D | |
| 29 | Install high-pressure line on high-pressure pump (7) on right rail | *BA07.03-P-1002-01D | |
| *BA07.03-P-1001-01D | |||
| Check | |||
| 30 | Check fuel high-pressure circuit | AR07.03-P-1010-04MM | |
| 31 | Insert insulation on high-pressure pump (7) | ||
| 32 | Install crash plate (3) and screw in screw/bolts (1) | *BA07.02-P-1003-01C | |
| 33 | Install bracket (2) at crash plate (3) and vacuum pump (7) | ||
| 34 | Clip ME-SFI [ME] control unit into bracket | AR07.08-P-1000W | |
| 35 | Clip in electrical line of ME-SFI [ME] control unit on ME-SFI [ME] control unit bracket | ||
| 36 | Put on and lock left electrical connection at ME-SFI [ME] control unit | AR07.08-P-1000W | |
| 37 | Clip wiring harness into crash plate (3) | ||
| 38 | Attach engine wiring harness to crash plate (3) | ||
| 39 | Attach insulation to right rail | ||
| 40 | Install left and right air filter housing | AR09.10-P-1150RKA | |
| 41 | Install charge air cooler | AR09.41-P-6819RKA | |
| 42 | Mount ground line to battery | AR54.10-P-0003W | |
| 43 | Switch on ignition | Otherwise damage could occur to the high-pressure pump (7). |
|
| Check | |||
| 44 | Check fuel high-pressure circuit | 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 | |
| 45 | Perform an engine test run and check fuel system for proper operation and leak tightness |
HIGH PRESSURE PUMP
| Number | Designation | Engine 276 | |
|---|---|---|---|
| BA07.02-P-1001-01C | Bolt, high-pressure pump to high-pressure pump drive housing | Nm | 14 |
HIGH PRESSURE PUMP
| Number | Designation | Engine 276 | |
|---|---|---|---|
| BA07.02-P-1003-01C | Bolt, shield to housing for high-pressure pump drive/bracket | Nm | 14 |
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-1002-01D | Union nut, fuel line to high-pressure pump | Stage 1 | Nm | 15 |
| Stage 2 | ∠° | 90 | ||
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1028-04A | Assembly cleaner | A 000 986 56 01 |