Lower Spray Arm - Gray

Replacement of the arms is very simple, the bottom arm pulls out after turning it counter clockwise, no tool needed. The upper arms need the use of a nut driver or simlar tool to remove the hex screws holding them to the water supply tubes. The hardest part of the repair will be removing the top dish tray. This requires twisting the door slide end retainers outward to remove them and then the dish tray will slide out allowing easy removal of the arm. The top arm is mounted the body of unit.
This problem would not have occurred if there was an inline filter on the cold side to filter out calcium (whole house filter). Another way to have corrected this without the purchase of parts would be to run the dishwasher on the rinse cycle 3 or 4 times using 1 cup of lime away on each rinse and also by removing the arms and soaking the arms in a 50/50 solution of water and lime away for 24 hours. This will break down the calicum and enable the arms to be cleaned using a garden hose. New parts however save time and labor in cleaning the arms, however the main drain and supply lines to the arms still need the rinsing prior to replacing the new parts.

Once upon a kitchen dreary.
Washing dishes made me weary.
All the dishes would not clean.
Gunk clogged up my filter screen.
The lower spray arm stuck and rattled.
With flying muck my dishes battled.
The muck had won and I had lost.
The repairman said it would really cost.
And so I did a google search.
Partselect got me out of a lurch.
Correct parts were easy to choose
and service so quick I couldn't lose.
I took off the old parts and tightened the new
No tools were needed my fingers flew.
And now my dishes come out clean
I feel competent and frugal, you know what I mean?

My dishwasher was doing a terrible job of cleaning. It was leaving food on dishes, and wasn't dissolving all the detergent. I replaced all the spray arms and the filter, as they seemed clogged, and god knows how old. It's a super easy repair, and the dishwasher now works as if it were brand new.

I pulled out the racks and decided to take off the upper (mid) arm. It came off with an adjustable wrench. When I looked at the arm I could tell that some of the holes were blocked. Some debris had gotten lodged in the holes and were blocking the water flow. I used tweezers to remove the debris and it solved the problem. I then pulled out the lower arm and cleaned it with warm water. There were soap deposits and I wondered if other debris could be blocking this as well. Finally I went onto the web site and saw that for $40 including shipping I could replace these parts with brand new parts. I did and the machine washes like new again.

Turned spray arm while lifting upward to remove the old part. Place new spray arm over the water outlet and turned with light downward pressure until properly seated.

It less time to do the repair than it took to open the box and unwrap the part!

Based on parts select diagrams, I removed the sprayer arms and replaced them along with new washers/bushings.
I simply pulled the front gasket out

This was very easy. 1) roll out lower rack, 2) rotate lower arm slightly counter-clockwise and lift it out, 3) install new lower arm by dropping into position and rotating clockwise. 4) roll in lower rack, and roll out upper rack, 5) use a nut driver to remove the retaining bolt/screw from the upper arm - it's in the center of the upper arm and you have to work from underside of upper rack, 6) remover upper arm, 7) install new upper arm by holding in position and re-inserting the retaining bolt/screw. 8) Tighten the retaining screw and make sure upper arm freely rotates.

get fingers between lower spray arm and drive flange - rotate arm counter-clock wise and lift off...the arm was warped and hitting inside of lower door liner.

change the nozzles and filter

I watched the video, read the instructions and went to work. This was the easiest repair I have ever done. I'm 71 and if I can do all 3 spray arms in a total of 15 minutes, anyone can. The hardest part was getting up off the floor when I was finished. The spray arms were all clogged, we have very hard water.