M4 Technical Data -- M4 (F82 & F83): Radiator
RADIATOR WITH MOUNTING F80/F82/F83/S55 SPECIFICATIONS
| Cap for cooling system | ||
| Pressure relief valve opens when the pressure exceeds the ambient pressure. | bar | 2.0 +0.1 -0.2 |
| Electric changeover valve must open at latest when the pressure is lower than the ambient pressure | bar | 0.1 |
| Test radiator pressure (excess pressure) | bar | 1.5 |