Check Low-Temperature Circuit Cooling System For Leaks - AR09.41-P-1010RKA
ENGINE 276.8 in model 172
ENGINE 276.8 in model 231
Shown on model 231 with engine 276.8
| 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 pressure. 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 | ||
| Remove | |||
| 1 | Switch on ignition | ||
| 2 | Remove upper engine cover | ||
| 3 | Remove lower engine compartment paneling | AR61.20-P-1105W | |
| 4 | Unscrew cap on low-temperature circuit coolant expansion reservoir (1) | ||
| 5 | Check coolant level and antifreeze content of coolant in low-temperature circuit; correct if necessary | *BF20.00-P-1001-02BA | |
| 6 | Screw tester cap (2) onto low-temperature circuit coolant expansion reservoir (1) | Fig 2 | |
| 7 | Connect pressure pump (3) at tester cap (2) | Fig 1 | |
| 8 | Apply compressed air to low-temperature circuit for 2 minutes at the test pressure | Test pressure for pressure-testing the engine cooling system |
*BE20.30-P-1005-01A |
| Check | |||
| 9 | Check all coolant carrying assembly parts and connection for coolant loss | In the event of pressure loss. | |
| Install | |||
| 10 | Actuate pressure relief button (4) on pressure pump (3) and relieve the pressure | Fig 1 | |
| 11 | Detach pressure pump (3) at tester cap (2) | Fig 1 | |
| 12 | Unscrew tester cap (2) at low-temperature circuit coolant expansion reservoir (1) | Fig 2 | |
| 13 | Switch off ignition | ||
| 14 | Check coolant level and antifreeze content of coolant; correct if necessary | *BF20.00-P-1001-02BA | |
| 15 | Mount cap on low-temperature circuit coolant expansion reservoir (1) | ||
| 16 | Install upper engine cover | ||
| 17 | Install lower engine compartment paneling | AR61.20-P-1105W |
RADIATOR OR EXPANSION RESERVOIR CAP
| Number | Designation | 1-stage cover latch | 2-stage cover latch | ||
|---|---|---|---|---|---|
| BE20.30-P-1005-01A | Test pressure for pressure-testing the engine cooling system | Overpressure | bar | 1, 4 | 1, 4 |
COOLING SYSTEM
| Number | Designation | ENGINE 276.8 in model 172 | ENGINE 276 in model 231 | |||
|---|---|---|---|---|---|---|
| BF20.00-P-1001-02BA | Cooling system | Workshop replacement amount | Main circuit | I | ≈10, 4 | ≈10, 8 |
| Low-temperature circuit | I | ≈3, 4 | ≈1, 9 | |||
| Antifreeze/water | Up to -37°C | % | 50/50 | 50/50 | ||
| As of -38°C | % | 55/45 | 55/45 | |||
| Specifications for Operating Fluids | BB00.40-P-0310-01A | BB00.40-P-0310-01A | ||||
| Specifications for Operating Fluids | BB00.40-P-0325-06A | BB00.40-P-0325-00A | ||||
| Specifications for Operating Fluids | BB00.40-P-0326-06A | BB00.40-P-0326-00A | ||||