How to Troubleshoot & Replace Ge AP3184058 / WD28X10103 3Rd Level Spray Arm Assembly (Top-Of-Tub)

Unplug electrical socket and water supply (2 minutes) Pull dishwasher out from under the counter (15 minutes) Pull back blanket insulation (2 minutes) Change out part with 2 screws (5 minutes) 

Replaced it with a new one. Removed dishwasher. Removed 2 screws from top. Replaced part. Re-installed dishwasher. If I had it to do over again, I would have purchased the 2 screws that hold it in place - AP2038571. 

I had to detach the top edge of the dishwasher from the counter, then remove the toe plate and lower the legs so the dishwasher could slide out from under the cabinet. I ran a washing cycle and observed...and when the spraying part of the cycled started, water started pouring out from under the insulation on top of the machine. (In hindsight, I wish I'd removed the insulation first. And I wish I'd had more towels ready. :-) The spray arm at the top was blocked, and the hose that fed it was cracked and leaking water. The replacement parts took 3 working days to arrive. When I received them, it was easy to replace the hose and spray arm. They fit exactly. It took 15 minutes. Then I ran another cycle to check the leak was fixed (it was!) and finally pushed the dishwasher back in and extended the legs to brace it firmly. In all, it took 60 minutes to pull out the dishwasher and find the problem, 15 minutes to fix it, and 30 minutes to check the fix and reinstall the dishwasher. And it only took that long to pull out the dishwasher because the leak warped the floor boards, making it initially difficult to slide out. 

Ordered an upper and lower spray arm for my 20 year old GE dishwasher. Everything was working well otherwise (no leaks, heating, cycles, draining properly). It just wasn't getting enough water sprayed in the machine (could still see residue/particles all over dishes and walls). After replacing the spray arms and running a few loads with 4 cups of white vinegar in the bottom of the machine, things are clean again. 

Replaced it with a new part.. Took about 30 minutes. Relatively easy fix. 

I replaced the upper spray arm. I ordered the water supply hose because I thought the mount for the upper spray arm was part of it. I could not tell for sure from the picture. All in all the repair was very simple, 

Replaced door gasket, and both spinning arms 

Replaced water supply hose. Also replaced upper spray arm, which was wobbly. 

I replaced Inlet valve, it was easy to do. Also did some maintenance on machine. Parts fit perfectly 

Took like ten minutes ordering the part took longer but that was easy too the lady on the phone found its numbers and took the details part sjhowed up regular mail volia done .Saved my old dishwasher for another few years "Old reliable."