Check Engine Oil Pressure - AR18.00-P-1250MRA
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Engine 274.9 in model 205
Engine 274.9 in model 253
| 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 injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| 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 | |
| Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| Check | |||
| 1 | Warm up engine to normal operating temperature | ||
| 2 | Check temperature sensor of the remote thermometer (01) into the oil dipstick tube and engine oil temperature | Oil pressure at operating temperature 90°C | *BE18.00-P-1001-01J |
| Fig 3 | |||
| 3 | Switch off ignition and store transmitter key outside of transmission range (min. 2 m) | ||
| 4 |
Check engine oil level approx. 5 min. after switching off the engine at operating temperature and correct if necessary | Vehicle must be horizontal and standing on its wheels. Otherwise a false measurement will be taken. |
AP18.00-P-1811MP |
| Remove/install | |||
| 5 | Remove upper engine cover | ||
| 6 | Remove oil filter element | ||
| Engine 274.910 in model 205 Engine 274.920 in model 205, 253 except code M005 (4MATIC) |
AP18.00-P-0101CWI AP18.00-P-0101CWE |
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| Engine 274.920 in model 205, 253 with code M005 (4MATIC) |
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| 7 | Screw in tester cap (05) | Fig 2 | |
| 8 | Attach pressure line (4) to tester cap (05) | Fig 1 | |
| Measure using pointer device | |||
| 9 | Start engine and read out oil pressure | Position oil pressure gauge (03) in such a way that it is not caught by the poly-V belt when starting the engine. Damage can occur otherwise to the oil pressure gauge (03) and to the poly-V belt. Oil pressure at operating temperature 90°C |
*BE18.00-P-1001-01J |
| 10 | Switch off ignition and store transmitter key outside of transmission range (min. 2 m) | ||
| 11 | Install in the reverse order | ||
| Check | |||
| 12 |
Check engine oil level approx. 5 min. after switching off the engine at operating temperature and correct if necessary | Vehicle must be horizontal and standing on its wheels. Otherwise a false measurement will be taken. |
AP18.00-P-1811MP |
| 13 | Carry out an engine test run and check engine for leaktightness | ||
| 14 | Install upper engine cover |
CHECK VALUES FOR OIL PRESSURE
| Number | Designation | Engine 274 | ||
|---|---|---|---|---|
| BE18.00-P-1001-01J | Oil pressure at operating temperature 90°C | - | bar | ≥0, 5 |
| at | 1/min | 650 | ||
| - | bar | ≥0, 9 | ||
| at | 1/min | 1000 | ||
| - | bar | ≥1, 7 | ||
| at | 1/min | 2000 | ||
| - | bar | ≥3, 5 | ||
| at | 1/min | 4000 | ||
| - | bar | - | ||
| at | 1/min | - | ||