Truck and Bus Engine and Ancillaries
Cooling System Parts
Radiators, charge air coolers, water pumps, thermostats, viscous fan drives, expansion tanks, coolant pipes and complete hose sets.
Features
- Charge air cooler leaks cost fuel and raise exhaust temperature long before a warning appears, so they are pressure tested at service.
- Viscous fan drives and electronically controlled fan clutches fail gradually, showing as high coolant temperature only under load.
- Hose sets are replaced together on high-hour vehicles, because one new hose among ten old ones only moves the next failure along.
- Radiator cap and expansion tank condition set system pressure and therefore boiling point; both are cheap and often overlooked.
- Coolant specification is part of the repair: mixing inhibitor packages causes gelling and blocks the cooler cores.
Specifications
| Figure | Typical range | Unit | Why it matters |
|---|---|---|---|
| Component | radiator / charge air cooler / water pump / thermostat / hose | Identifies the line. | |
| Core dimensions | 900 x 780 x 52 | mm | Fit in the cooling pack. |
| Thermostat opening temperature | 83 / 87 / 90 | °C | Must follow the engine specification. |
| Hose inside diameter | 32 - 100 | mm | Sealing on the existing spigots. |