Remove/Install Drive Gear Of High-Pressure Fuel Pump - AR07.02-P-1027MSA
Engine 256.9 in model 213, 238, 257, 290
MODIFICATION NOTES
| 03.12.2018 | Document revised completely. |
| 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-1020MSA | |
| 2 | Remove charge air line. | Engine 256.9 in model 213, 238, 257 with code M016 (Uprated engine) Engine 256.9 in model 290 |
AR09.41-P-8952MSA |
| Engine 256.9 in model 257 except code M016 (Uprated engine) | AR09.41-P-8950MSA | ||
| 3 | Pierce cap (1) at center and pry out. | Do not damage seat of cap (1) in timing case cover (5). Leaks can occur otherwise. |
|
| 4 | Release screw (14). | ||
| 5 | Remove lower slide rail. | AR05.10-P-8420MSA | |
| 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 | Remove drive gear (15) with sleeve (2). | ||
| Install | |||
| 11 | Position major assembly chain (16) as previously marked on drive gear (15). | Observe applied marking for running direction Engine damage can occur otherwise. |
|
| 12 | Install drive gear (15) and manually slightly tighten screw (14). | ||
| 13 | Determine clearance between flange contact surface and pump 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 | ||
| 14 | Fit timing chain as previously marked. | Observe applied marking for running direction Engine damage can occur otherwise. |
|
| 15 | Install lower slide rail. | AR05.10-P-8420MSA | |
| 16 | Tighten screw (14) on the drive gear (15). | *BA07.02-P-1003-01MRT | |
| 17 | Install cap (1). | ||
| 18 | Install charge air line. | Engine 256.9 in model 213, 238, 257 with code M016 (Uprated engine) Engine 256.9 in model 290 |
AR09.41-P-8952MSA |
| Engine 256.9 in model 257 except code M016 (Uprated engine) | AR09.41-P-8950MSA | ||
| 19 | Install fuel high-pressure pump. | AR07.02-P-1020MSA |
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 |