Inspecting the complete cooling system when servicing vehicles is vital

Coming into the summer months, it is critical that workshops pay particular attention to the overall health of the cooling system and each component within it for their clients.
It is vital that each component of the system is maintained at the highest level of performance and efficiency, including the cooling system hoses, heater core, radiator, expansion tank, fan, thermal switch, thermostat, water pump, radiator cap and expansion tank cap.
As one of the essential components of the system, the cooling system hoses carry the coolant through the entire circuit.
Possible sources of damage to hoses can include electrochemical degradation (internal damage), leakage, heat, ozone, abrasion and oil contamination, and any damage can inhibit the flow of coolant, causing the cooling system to fail.
Today’s smaller engines are increasingly more powerful, creating more heat and leaving less space under the bonnet.
With the reduction in engine compartment size, coolant hoses must fight ever-higher temperatures and come in ever-more shapes and sizes to fit specific applications and tight engine spaces. This demonstrates the importance of choosing coolant hoses that are electrochemical resistant.
Car manufacturers are designing the majority of new coolant and heater hose parts as branched/modular assemblies.
Gates says the modular hoses it manufactures now have quick-connects, sensors, restrictors, valves, and other components built into the hose, and this trend is going to continue.

Gates has a comprehensive range for popular makes and models. Key features include:
• Factory quality connections that are durable and eliminate coolant leaks.
• Engineered to resist electrochemical degradation – the leading cause of hose failure.
• Heat and ozone resistant cover.
• Meets SAE 20R4 and 20R3 Type EC Class D-1 and D-2 specifications.
• Temperature rating: -40°C to +135°C in coolant hose applications.
• Backed with a five-year/100,000 km warranty.

Gates recommends that preventive maintenance is carried out at each service. All components of the cooling system should be checked for wear and damage, and any damaged parts replaced immediately to avoid worst case scenarios.
As well as saving your customer time and money, Gates says this is also good news for you as it improves customer satisfaction levels with your workshop and keeps your customers coming back.

For a complete trouble shooting guide, including replacement guidelines, go to

For more information, contact Gates directly at or on +61 3 9797 9688.