Tools and materials:
* Wrench set
* Screwdrivers
* Pliers
* Oil filter puller
* Sealant for oil pan
* Oil pump filter
* New gear oil
* Flat bucket or baking tray for draining oil
Repair instructions for automatic transmission oil pump 5L40E:
1. Preparation:
* Place the car on a lift or on a flat surface.
* Let the engine cool down if it has been running.
2. Draining transmission oil:
* Locate the automatic transmission oil pan drain plug. It is usually located at the bottom of the tray.
* Place a flat bucket or baking tray under the drain plug.
* Unscrew the drain plug with a wrench.
* Allow the oil to drain completely.
3. Removing the oil pan:
* Unscrew the bolts or nuts securing the oil pan to the automatic transmission.
* Carefully remove the oil pan.
* Clean the pan from residual sealant and dirt.
4. Removing the oil filter:
* Locate the oil pump oil filter. It is usually located in the oil pump housing inside the automatic transmission.
* Remove the bolts or nuts securing the oil filter.
* Remove the old oil filter.
5. Installing a new oil filter:
* Install a new oil filter into the oil pump housing.
* Tighten the bolts or nuts securing the oil filter.
6. Installing the oil pan:
* Apply a thin layer of oil pan sealant to the surface of the pan that comes into contact with the transmission.
* Install the oil pan on the automatic transmission.
* Tighten the bolts or nuts securing the oil pan.
7. Filling with transmission oil:
* Locate the transmission oil dipstick. It is usually located on the side of the automatic transmission.
* Fill the automatic transmission with new transmission oil through the dipstick. Use the type and quantity of oil recommended by the vehicle manufacturer.
8. Checking the oil level:
* Start the engine and let it run for a few minutes.
* Check the oil level using the dipstick. The oil level should be between the “Min” and “Max” marks on the dipstick when the engine is running.
*Add oil if necessary.
9. Tightening the drain plug and checking for leaks:
* Tighten the oil pan drain plug.
* Start the engine and let it run for a few minutes.
*Check under the car for leaks. If there are leaks, tighten the drain plug or replace it.
10. Reset codes:
*If the automatic transmission was disabled during repair, it may be necessary to reset fault codes or adaptive values. Consult your vehicle’s owner’s manual for specific instructions on resetting codes.