Car Transmission Fluid Pump: Functions, Types, and Maintenance
Introduction
The car transmission fluid pump is an essential component of the vehicle’s transmission system, responsible for circulating transmission fluid throughout the system. This fluid lubricates and cools the transmission components, ensuring smooth operation and preventing wear and tear.
Functions of the Transmission Fluid Pump
The primary function of the transmission fluid pump is to:
– Circulate transmission fluid throughout the transmission system.
– Pressurize the fluid to ensure proper lubrication and cooling.
– Filter out contaminants from the fluid.
– Maintain the correct fluid level within the transmission.
Types of Transmission Fluid Pumps
There are two main types of transmission fluid pumps:
# 1. Gear-type Pumps
– Gear-type pumps use two intermeshing gears to create a pumping action.
– They are commonly used in automatic transmissions and provide high pressure and flow rates.
# 2. Vane-type Pumps
– Vane-type pumps use a rotor with vanes that extend outwards when the rotor spins.
– They are found in some automatic and continuously variable transmissions (CVTs).
– Vane-type pumps provide lower pressure but higher flow rates compared to gear-type pumps.
Operation of a Transmission Fluid Pump
The transmission fluid pump typically operates off the engine crankshaft or the transmission’s input shaft. As the shaft rotates, it drives the pump, causing the gears or vanes to rotate. This action generates a vacuum, drawing transmission fluid from the transmission pan. The fluid is then pressurized and circulated through channels and passages within the transmission.
Maintenance of the Transmission Fluid Pump
Regular maintenance of the transmission fluid pump is crucial for its proper functioning and the overall health of the transmission. Here are some important maintenance tips:
# 1. Change Transmission Fluid Regularly
Transmission fluid deteriorates over time, losing its lubricating and cooling properties. It also accumulates contaminants such as metal particles and clutch material. Regular transmission fluid changes, as recommended by the vehicle manufacturer, help remove contaminants and ensure the pump operates efficiently.
# 2. Inspect Transmission Fluid Level
Transmission fluid level should be checked regularly using the dipstick provided. Low fluid levels can starve the pump of fluid, causing damage. Top up the fluid as necessary.
# 3. Replace Transmission Fluid Filter
The transmission fluid filter helps trap contaminants from the fluid. A clogged filter can restrict fluid flow and put excessive strain on the pump. Replace the filter according to the vehicle’s maintenance schedule.
# 4. Check for Leaks
Transmission fluid leaks can lead to fluid loss and pump damage. Inspect the transmission for any visible leaks, especially around the pump and fluid lines. Repair any leaks promptly.
# 5. Monitor Pump Noises
Unusual noises, such as whining or grinding, coming from the transmission area may indicate a problem with the fluid pump. Have the transmission inspected by a qualified mechanic if you notice any abnormal noises.
Conclusion
The car transmission fluid pump is a vital component that ensures the smooth and reliable functioning of the transmission. By following proper maintenance practices, such as changing the fluid regularly and inspecting for leaks, you can extend the lifespan of the pump and the entire transmission system. If you suspect any problems with the transmission fluid pump, do not hesitate to consult a qualified mechanic for diagnosis and repairs.
