(Drain/Fill Low-Temperature Circuit Coolant - AR09.41-P-6834MNG)
Engine 177 in model 253
| 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 avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| Notes on coolant | AH20.00-N-2080-01A | ||
| Remove | |||
| 1 | Remove engine compartment paneling | AR61.20-P-1105LW | |
| Drain off | |||
| 2 | Remove the cap at the low-temperature circuit expansion tank | AR09.41-P-0050MNG | |
| 3 | Remove coolant hose (20) on low-temperature circuit circulation pump 1 (M43/6) and drain off coolant into suitable container | AR20.20-P-7441-01RQ | |
| 4 | To do this, remove coolant hose (21) from low-temperature circuit cooler and drain off coolant into suitable container | AR20.20-P-7441-01RQ | |
| 5 | Remove coolant hoses (22, 23) from oil cooler and drain off coolant into suitable container | AR20.20-P-7441-01RQ | |
| 6 | Attach coolant hose (20) to low-temperature circuit circulation pump 1 (M43/6) | AR20.20-P-7441-01RQ | |
| 7 | Attach coolant hose (21) to low-temperature circuit cooler | AR20.20-P-7441-01RQ | |
| 8 | Attach coolant hoses (22, 23) to oil cooler | AR20.20-P-7441-01RQ | |
| Pour in | |||
| 9 | Pour in clean coolant and bleed low-temperature circuit engine cooling system | AR20.00-P-1142-04A | |
| *BF20.00-P-1001-02LA | |||
| *BF20.00-P-1001-04A | |||
| Fig 3 | |||
| Fig 1 | |||
| Fig 4 | |||
| Fig 2 | |||
| Check | |||
| 10 | Check low-temperature circuit cooling system for leaktightness | AR09.41-P-1011MNG | |
| Install | |||
| 11 | Install lower engine compartment paneling | AR61.20-P-1105LW |
COOLING SYSTEM
| Number | Designation | Engine 177 in model 253 | |||
|---|---|---|---|---|---|
| BF20.00-P-1001-02LA | Cooling system | Workshop replacement amount | Main circuit | Liter | ≈ 11, 1 |
| Low-temperature circuit | Liter | ≈ 4, 6 | |||
| Antifreeze/water | Down to -37°C | % | 50/50 | ||
| -38°C and below | % | 55/45 | |||
| Specifications for Operating Fluids, sheet | BB00.40-P-0310-01A | ||||
| Specifications for Operating Fluids, sheet | BB00.40-P-0325-06A | ||||
| Specifications for Operating Fluids, sheet | BB00.40-P-0326-06A | ||||
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 sheet | BB00.40-P-0310-01A | ||||
| References to sheet specification | BB00.40-P-0310ZZ | ||||