Testing the cooling system cap - AR20.30-P-4300GZB
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 Mercedes-Benz ML350, 2010 Mercedes-Benz ML350, 2009 Mercedes-Benz ML320, 2009 Mercedes-Benz GL320, and 2008 Mercedes-Benz ML320. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE 642 in MODEL 164
| Checking | |||
|---|---|---|---|
| Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof | Keep body parts and limbs well clear of moving parts. | AS00.00-Z-0011-01A | |
| Risk of injury
to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by swallowing coolant. |
Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| 1 | Open engine hood | AR88.40-P-1000GZ | |
| 2 | Open cooling system cap (1) | ||
| 3 | Fix the adapter (2) to the pressure pump (3) | Fig 3 | |
| Fig 2 | |||
| 4 | Screw on the cooling system cap (1) to the adapter (2) | ||
| 5 | Check cooling system cap (1) | Check cooling system sealing cap (1) and pressure relief valve using the test values. Test specifications: |
|
| Cap code number | *BE20.30-P-1001-01A | ||
| Pressure relief valve opens | *BE20.30-P-1002-01A | ||
| Vacuum valve opens (reference value) | *BE20.30-P-1003-01A | ||
| Pressure relief valve opens | *BE20.30-P-1004-01A | ||
| 6 | Close coolant expansion reservoir using cooling system cap (1) | ||
| 7 | Close engine hood | AR88.40-P-1000GZ |
CAP FOR RADIATOR OR EXPANSION RESERVOIR
| Number | Designation | 2-stage cap | ||
|---|---|---|---|---|
| BE20.30-P-1001-01A | Cap code number | 140/200 | ||
| BE20.30-P-1002-01A | Pressure relief valve opens | New | bar gage | - |
| Used | bar gage | - | ||
| BE20.30-P-1003-01A | Vacuum valve opens (reference value) | bar vacuum | 0.1 | |
| BE20.30-P-1004-01A | Pressure relief valve opens | Stage 1 | bar gage | 1.4 (±1) |
| Coolant temp. | ≥ 130/134 | |||
| Stage 2 | bar gage | 2.0 (±1) | ||
| Coolant temp. | ≥ 137/143 | |||