A broken oil pump shaft will prevent the oil pump from circulating the oil from the oil pan throughout the rest of the engine. The oil pump is attached to the distributor with this shaft. Replacing the oil pump shaft is not a difficult job, and it can save you a lot of money replacing it yourself.
If you are going to replace the shaft, you might as well do an oil change at this time too.
Tools and Materials
- Oil Pump Shaft
- Floor jack and jack stands
- Socket wrench and sockets
- Screwdriver or putty knife
- Oil pan gasket
- Oil filter wrench
- Drip pan
- Motor oil
- Oil filter
Step 1 – Preparation
Park your car on a flat surface with plenty of room to work, and set the emergency brake to prevent the car from rolling back. Raise the car using the floor jack and support the vehicle using one of the jack stands. Remove the floor jack from under the car and slide the drip pan under the oil pan.
Remove the screw at the bottom of the oil pan, and allow the used motor oil to drain. Remove the oil filter, using the filter wrench, and dump that oil into the drip pan also. After draining all the oil from the car, remove the drip pan from underneath the car and set it aside.
Step 2 – Removing the Oil Pan
The oil pump is located inside the motor, so you must remove the oil pan in order to access the pump. Use the appropriate size socket and your socket wrench to remove all the bolts that attach the oil pan to the motor. Use your screwdriver or putty knife to separate the oil pan from the bottom of the motor and set the oil pan aside.
Step 3 – Removing the Oil Pump
Locate the oil pump and remove the bolts securing it to the motor. Carefully, lower the oil pump out of the motor and set is aside where you can work on it.
Step 4 – Installing the New Oil Pump Shaft
Remove the broken or worn oil pump shaft and discard it. Install the new shaft in the motor, with the circular end of the shaft facing toward the distributor, and bolt it into place. Reinstall the pump to to motor.
Step 5 – Installing the Oil Pan
Before you reinstall the oil pan, take the putty knife and scrape the entire oil pan gasket away. Do the same for the underside of the motor where the oil pan attaches. Any gaps in the seal will create an oil leak and lead to future issues.
Take the new oil pan gasket and place it on the oil pan where it attaches to the motor. Set the oil pan against the bottom of the motor and secure it with the oil pan screws. Check for a tight seal and retighten the pan if necessary. Screw the oil pan drain screw back in place. Remove the jack stands and slowly lower the vehicle back down.
Step 6 – Finishing Steps
Open the hood and remove the oil filler cap. Dip your finger in some used motor oil and apply a thin film to the oil filter gasket and then screw the filter into place.
Replace the recommended amount of oil in your engine and check for any leaks. Clean up your tools and dispose of the used motor oil per local guidelines now that your oil pump shaft has been replaced.