The radiator water pump is a motorized pumping component fitted inside the engine cooling system of automobiles. The radiator water pump is seen to be the heart of an engine cooling system, as it circulates water or coolant from radiator to engine and vice versa. A conventional radiator water pump has a metal or plastic impeller with blades, that is attached to the shaft, and is supported by bearings and seal assembly. The water pump gets its power from fan belt or the timing belt.
Internal combustion engines give alot of heat while running, and if the engine temperature is not kept in check, the engine may seize or stop functioning. The radiator prevents this by circulating cool water or coolant around the engine. The coolant absorbs the heat, circulates back to the radiator, cools down, and is then goes back to the engine. This cycle continues as long as the radiator pump is functioning. As soon as radiator water pump starts a problem, the temperature of engine increases, causing the engine to seize. Thus, it is important to keep the radiator water pump in a perfectly working condition.
SYMPTOMS OF MALFUNCTIONING RADIATOR WATER PUMP
These are some signs which might help you in resolving radiator water pump problems in their early stages:
- Screeching noise from the radiator (not to confuse this with engine noise)
- The vehicle leaves behind coolant or water spots where it has been parked, thus indicating leakage. It may be due to radiator water pumps leakage or radiator pipe leakage.
- Strong odor of coolant while driving.
- Spike in engine temperature (shown by temperature indicator on dash board)
- Wobbling of radiator fan, which produces an odd noise while driving.
- Sudden cranking noise from radiator indicating the impeller is broken
If you come across any of the above-mentioned signs, it is time to check the radiator. Depending on the type of issue, you may be able to repair a radiator water pump b yourself.
Note: let the engine to cool down completely before you undertake the work of repairing a radiator water pump.
A radiator water pump can only be repaired for minor isues, which include breaking of timing belt, broken impeller blades, cracking of seal, and damaged bearings.
Step 1 – REMOVE RADIATOR HOSE
Once the engine has been cooled down completely, check if the timing belt is ok. It is fairly easy to remove the timing belt and replace it with a new one. If the problem is not with the radiator belt, then you will have to check further.
Step 2 – POUR OUT THE COOLANT
Slide below the hood of the car, find the petcock, unscrew it and drain the coolant into a plastic container.
Step 3 – REMOVE THE FAN ASSEMBLY
Using a screwdriver, remove the fan assembly, which is inclusive of the shroud, fan and fan belt
Step 4 – REMOVE WATER PUMP
Once the fan is taken out, the water pump becomes visible. Remove it using a socket set.
Step 5 – REPAIR THE PUMP
After removing the pump, open its housing and check for cracked or damaged bearings or seals. Replace them as demand is and close the housing. If the impeller is broken, replace it properly.
Step 6 – REASSEMBLE THE COOLING SYSTEM
After carrying out needed repairs, reassemble every component that has been removed. Start the engine and keep it running for five minutes to make sure that everything is in order.