The spray arm on my both the lower drawer and top drawer does not stay in place, it only float in the water.

SOURCE: small plastic top and mid spray arm do not turn, bottom does

decrete, you want to get down to the chopper and screen. If the screen is plugged up with gunk there won't be enough pressure to reach the top spray arms. Check out the posted pics. Remove the lower spray arm. Rotate the rear feed arm to the right until it unsnaps from the tube going up the back. See the 4 torq screws holding the filter on. Remove them. Lift the filter up. Now you will see the chopper inlet cover. 1 torq screw holding it in. Lift it up and there's the chopper and screen. Catriver..post back

SOURCE: bosch dishwasher sgs43a52gb

try http://www.bshappliancecare.com/Bosch/boschspares.html

it's pretty flaky and I didn't work when I tried to download a manual for my SRS43A02GB/08, but the parts-lists do.

If you go to the 'Launch the spare parts eShop' and enter your model number (you only quote it partially above, so you then need to select the particular model), you can see the exploded parts diagram - click right-hand icon 'print all pages' to get a pdf of all the exploded diagrams. You can order from here too and they seem a lot cheaper than alternatives, but I haven't actually bought anything yet.

SOURCE: Dishwasher upper arm does not spray

possible ball valve problem

SOURCE: lower spray arm will not spray water

I just had a simliar problem with all spray arms and solved the problem by cleaning the food screen. Basically, it takes water pressure to make the spray arms rotate. Before assuming there is a failed part, make sure the spray arms are getting max water pressure by checking the food screen. Here's how I serviced my Kenmore dishwasher.

The lower arm assembley is removable by twisting the center plastic piece. It's not very tight and should come off easily by twist with a pliers (but gently). Then remove the tubing to the upper arms (Two screws). Then remove the bottom drain cover (4 star screws).

Under the drain cover are two more things to remove. One, a plastic plate over the bottom of the water drain (1 screw). Two cover to the food screen (1 screw). After removng the screw to the cover of the food screen, it will be a little difficult to remove that cover. The side opposite the screw requires releasing a catch with a screw driver. It's hard tell which way it releases, just keep trying different ways until it pops up. The cover may stick a little beacuse of the food stuck in the screen.

Once you have access to the screen, the screen can be removed by pulling on the center shaft (spring loaded) with a needle nose pliers and lifting the screen straight up. (Note: there maybe a blade next to the screen used to braek up the food.)

After removing the screen, clean it (I used a plastic scrub brush).

Reassembly is performaing these steps in the reverse order.

Hope this helps!

SOURCE: Lower spray arm does not spin on my bosch dishwasher

Sounds like you may have put it together wrong. I would just take the arm back off and make sure that it all fits together right. A little tip for you too. Dishwashers will clog up all the time with water deposits and food gunk. There are all those expensive cleaners out on the market but the best and cheapest way to clean them is with white vinegar. Simply pour it into the dishwasher when it is empty and run it on the pots and pans setting on hot. Always make sure to pre heat your water too by running the sink till it starts steaming. This will make it easier for your dishwasher to heat the water. If you don't, then when you turn on the dishwasher it starts to fill with cold water and has to heat it on its own. Run the vinegar though through it at least once a month or so and it will extend the life of the dishwasher. Hope this helps. Just try taking that arm back off though and putting it back together making sure everything is fitting properly. If you have any other questions feel free to ask me. Good luck.