Remove/Install Drive Gear Of High Fuel Pressure Pump - AR07.02-P-1027MSC
Engine 256.9 in model 167
| Risk of injury . Moving parts can pinch, crush or, in extreme cases even sever extremities. | No parts of the body or limbs should be within the operating area of mechanical components when moving components. | AS00.00-Z-0009-01A | |
| 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. |
AS18.00-Z-0001-01A | |
| Topical note | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Remove | |||
| 1 | Remove fuel high-pressure pump. | AR07.02-P-1020MSC | |
| 2.1 | Remove charge air line. | Engine 256.9 in model 167 except code M016 (Uprated engine) |
|
| AR09.41-P-8950MSC | |||
| 2.2 | Remove charge air line from check valve to additional compressor. | Engine 256.9 in model 167 with code M016 (Uprated engine) |
|
| AR09.41-P-8952MSC | |||
| 3 | Pierce cap (1) in center with suitable tool and pry out. | Do not damage seat of cap (1) in timing case cover (5). Leaks can occur otherwise. |
|
| 4 | Loosen screw (14). | ||
| 5 | Remove lower slide rail. | AR05.10-P-8420MSC | |
| 6 | Mark running direction of timing chain and remove timing chain. | ||
| 7 | Mark running direction of major assembly chain (16) and remove major assembly chain (16). | ||
| 8 | Unscrew screw (14). | ||
| 9 | Install thrust piece of sleeve (2) at drive gear (15). | Fig 1 | |
| 10 | Screw in pressure screw (4) until drive gear (15) releases from shaft of fuel high-pressure pump. | ||
| Fig 1 | |||
| 11 | Remove drive gear (15) with sleeve (2). | ||
| Install | |||
| 12 | Position major assembly chain (16) as previously marked on drive gear (15). | Observe applied marking for running direction. Engine damage can occur otherwise. |
|
| 13 | Install drive gear (15) and manually slightly tighten screw (14). | ||
| 14 | Determine clearance between flange contact surface and pump at roller tappet of fuel high-pressure pump. | AR07.02-P-1020-04MRT | |
| Distance of flange contact surface to roller tappet pump system If clearance is not OK, ↓ continue to turn drive gear (15) in the direction of engine rotation until the distance dimension is OK. |
*BE07.02-P-1001-03MRT | ||
| 15 | Fit timing chain as previously marked. | Observe applied marking for running direction. Engine damage can occur otherwise. |
|
| 16 | Install lower slide rail. | AR05.10-P-8420MSC | |
| 17 | Tighten screw (14) on the drive gear (15). | *BA07.02-P-1003-01MRT | |
| 18 | Install new cap (1). | ||
| 19.1 | Install charge air line. | Engine 256.9 in model 167 except code M016 (Uprated engine) |
|
| AR09.41-P-8950MSC | |||
| 19.2 | Install charge air line from check valve to additional compressor. | Engine 256.9 in model 167 with code M016 (Uprated engine) |
|
| AR09.41-P-8952MSC | |||
| 20 | Install fuel high-pressure pump. | AR07.02-P-1020MSC |
CHECK VALUES FOR FUEL HIGH-PRESSURE PUMP
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BE07.02-P-1001-03MRT | Distance of flange contact surface to roller tappet pump system | mm | 29, 3 ±0, 2 |
HIGH PRESSURE FUEL PUMP, HIGH PRESSURE FUEL PUMP HOUSING
| Number | Designation | Engine 256.9 | |
|---|---|---|---|
| BA07.02-P-1003-01MRT | Screw/bolt, sprocket to high pressure fuel pump | Nm | 60 |