Check Engine Cooling System For Leaktightness - AR20.00-P-1011OLC
Engine 177, 264, 274, 642, 654 in Model 213
Engine 264 in Model 257
Engine 264, 274.9, 642, 654 in Model 238
Shown on engine 654
| Risk of injury
to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant. |
Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| Notes on coolant | AH20.00-N-2080-01A | ||
| Notes on coolant level | AH20.00-P-1142-01CW | ||
| Remove | |||
| 1 | Remove cap (1). | ||
| 2 | Check coolant level and correct. | *BF20.00-P-1001-04A | |
| 3 | Install tester cap (3) on coolant expansion reservoir (2). | Fig 1 | |
| 4 | Connect pressure pump (4) at tester cap (3). | Fig 2 | |
| Check | |||
| 5 | Apply a test pressure to the engine cooling system for2 minutes. | Do not exceed the specified test pressure. Otherwise the engine cooling system will be damaged. |
|
| Engine 177 in Model 213Test pressure for pressure-testing the cooling system | *BE20.30-P-1002-01D | ||
| Engine 264 in Model 257 Engine 264, 274, 642, 654 in Model 213 Engine 264, 274.9, 642, 654 in Model 238Test pressure for pressure-testing the engine cooling system |
*BE20.30-P-1005-01A | ||
| 6 | Check condition of all coolant carrying component parts and connections and check for leak tightness. | In the event of pressure loss. If problems exist, ↓ Replace corresponding components. |
|
| Install | |||
| 7. | Relieve test pressure via valve on pressure pump (4). | Fig 2 | |
| 8 | Remove pressure pump (4) from tester cap (3). | ||
| 9 | Remove tester cap (3). | Fig 1 | |
| 10 | Check coolant level and correct. | *BF20.00-P-1001-04A | |
| 11 | Attach the cap (1). |
COOLING SYSTEM CHECK VALUES
| Number | Designation | Engine 177 | ||
|---|---|---|---|---|
| BE20.30-P-1002-01D | Test pressure for pressure-testing the cooling system | Overpressure | bar | 1, 4 |
RADIATOR OR EXPANSION RESERVOIR CAP
| Number | Designation | 1-stage cover latch | 2-stage latch cover | ||
|---|---|---|---|---|---|
| BE20.30-P-1005-01A | Test pressure for pressure-testing the engine cooling system | Overpressure | bar | 1, 4 | 1, 4 |
COOLANT MIXING RATIO
| Number | Designation | All engines, except engine 178 in model 190.381 | |||
|---|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | Up to -25°C | % | - |
| Up to -37°C | % | 50/50 | |||
| As of -38°C | % | 55/45 | |||
| Overview and Specifications | BB00.40-P-0310-01A | ||||
| References to Specifications | BB00.40-P-0310ZZ | ||||