You will need to remove the washer exterior cabinet in order to sufficiently locate the source of your leak. The following steps explain how:
1. Unplug washing machine
2. Remove console. This can be accomplished in one of two ways depending on which type of console you have.
a. If the console has removable end caps, the caps lift off by prying on the top from the back of the washer. The cap will pull off towards you as you are facing the unit from the front of the washer. There will be a screw under each end cap that you will need to remove.
b. If the console does not have removable end caps, you will need to slide a putty knife under the front corner of each side and push in while lifting up. There is a retaining clip under each side that has to be released.
3. Once the console has been released it will lift up and fold back over the back of the washer in its resting position. Use care not to stress the small plastic hinges that hold it on. They can break easily.
4. Under the console will be two large brass colored clips. Take a large flat blade screwdriver and place it in the groove of the clip on the washer top. With the screwdriver firmly in the groove, push away from you towards the back of the washer. This will release the clips.
5. Disconnect the lid switch connector plug. This is the white colored plug on the washer top under the console.
6. Remove the washer casing. Open the lid of the washer. Using one hand, grip under the front rim
of the washer opening. Do not grab the wash tub, just the casing. Tilt the washer case from the back first towards you, slide forward slightly, and then lift up. The entire case comes off exposing the wash tub and components.
NOTE: Its a good idea to run a small amount of water in the tub PRIOR to removing the casing in order to get a better idea of where the leak may be coming from. The washer will not run without the lid switch plugged in, so fill about 1/4 full and shut the washer off before disassembling everything.
I know you replaced the drain pump, but did you verify if the hoses were good? Check both the hoses on the pump to ensure they do not have any cracks that could be causing the leak.
The water inlet and dispenser hoses are located along the back. Check for cracks and loose clamps.
To get the cabinet back on the washer, follow these steps:1, With the lid of the washer open, grasp case under front rim and place it on the washer frame. While looking down through the washer lid opening, make sure the front lip of the case is placed UNDER the washer frame and rocked back onto the frame to ensure that the small cleats on the frame fit into the slotted grooves on the washer case base. If you do not get the case seated correctly it will rattle and vibrate while the washer is in operation.
2. Make sure the back of the washer fits into the washer casing on each side by leaning over the front of the washer and grasping the back panel and pull towards you. Reinsert the brass clips by placing the clips into the slot on the back of the washer first, and then forcefully push then down into the opening on top of the washer.
3. REINSTALL LID SWITCH CONNECTOR. It is easy to forget. If you do not reconnect it, the washer will not work correctly.
4. Reinstall console.
Some other things to consider:1. Check your fill hoses to ensure they are tight and not leaking. What can often appear as a washer problem, may be a loose hose.2. With the washer case removed, check the are UNDER the wash tub. If the leak is coming from the center above the transmission, the tub seal may be leaking.3. Inspect the wash tub for any cracks. If the tub is cracked and its not serious, you may be able to get by with some marine epoxy to reseal it. If the crack is significant, a new tub will be required. 4. Check the air dome on the lower right hand side of the wash tub. This is a small plastic air hose that runs from the wash tub all the way to the pressure switch. If this hose comes loose, the washer will start to leak as it fills. Simply reattach if it comes loose.NOTE: It is important to remove the washer case in matters like this so that you can get a full view of everything to determine the source of the leak. Read through everything thoroughly before beginning any repairs. I hope this information is helpful.