With temps on the rise and summer just around the corner, it's time to once again think about the cooling capacity of your off-road rig. We often push our engines harder than the average driver, whether that be slow trail crawling where air flow across the radiator is minimal or high-speed running where we're demanding a lot of power and building heat in the motor.
A well-performing cooling system helps your drivetrain last longer and allows your ride to endure the heat of summer without problems. The heart of the system is the mechanical water pump. An impeller spins inside the housing, pushing water from the center of the impeller outward while simultaneously creating suction that draws more coolant into the center of the impeller. Internal failure of the pump can cause water leaks and diminish cooling capacity.
External conditions can also cause a water pump to fail prematurely. These can include a damaged (unbalanced) fan, aged or corroded coolant, defective fan clutch, excessive belt tension, or any contact of the fan with the radiator or shroud.