Replace Full-Load Crankcase Ventilation System - AR01.20-P-0002MRA
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Engine 274.9 in model 205
except code 494 (US version)
except code 945 (China Stage 6 exhaust treatment)
Engine 274.9 in model 253
except code 494 (US version)
except code 945 (China Stage 6 exhaust treatment)
Shown on engine 274.9 in model 205 (except 205.047/147/247)
| Risk of injury due to fan starting unexpectedly | Do not reach into the rotation or hazard area of the fan. Wear closed and close-fitting work clothes. | AS20.40-Z-0001-01A | |
| 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 | |
| Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| Remove/install | |||
| 1 | Remove upper engine cover | ||
| 2 | Remove engine air intake duct upstream of air filter | ||
| 3 | Remove full load vent line (1) from heating element (2) | ||
| 4 | Unscrew bolt (8) | *BA00.10-P-1002-04A | |
| 5 | Unclip partial load vent line and vacuum line from wide open throttle crankcase vent line (1) | ||
| 6 | Remove screws/bolts (5) | *BA01.20-P-1008-01R | |
| 7 | Release and disconnect purge lines (6, 7) at bleed valve and seal openings with suitable stop plugs | Fig 1 | |
| 8 | Remove center and rear lower engine compartment paneling | AR61.20-P-1105LW | |
| 9 | Cut open and remove heat-shrinkable tube of connection piece (4) | ||
| 10 | Split and remove connection piece (4) with a suitable tool at predetermined fracture point | ||
| 11 | Remove wide open throttle vent line (1) from oil separator (3) and remove upwards | ||
| 12 | Install in the reverse order | ||
| Check | |||
| Risk of burn injuries
, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust. |
Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area. |
AS49.00-Z-0001-01A | |
| 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 | |
| 13 | Carry out an engine test run, checking the 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 |
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER, CAMSHAFT HOUSING
| Number | Designation | Engine 274 | |
|---|---|---|---|
| BA01.20-P-1008-01R | Screw, bleed line/bleed valve to coolant thermostat | Nm | 8 |