My MSD2756 side by side needs a new compressor and

Make sure your blower fan is turned on and is blowing air. When you push your a/c button the yellow light should come on. If it is not blowing cool, it could be several things. Low on 134a or the control that has the a/c button on it could be bad or blown fuse, bad compressor, etc. If the air is cool but not cold the 134A is low. If it is still blowing hot, check and make sure that the clutch on the compressor is locked in. It most likely is not. Check ac fuses and ac relay, if they are good, check the 134a ,if low, refill it. This should fix it. Remember that if the a/c clutch is not locking in, you cannot add 134a because of no circulation.On some vehicles, if it is completely out of 134a, the relay will not trip and you will have to bypass the relay to provide power to the compressor to fill it. If you do all of these and it still does not work, you will need to take it to a professional. If you need to, reply back and I will give you more possibilities.(I think that you mean evaporator coil)

invest in a can with a gague of 134A at auto zone it will have the filler hose on it. Attach it to your low pressure side line .it will only fit on the low pressure side. (if you cant find low pressure line on car google (where is low pressure line for AC Ford focus) check your gauge if low on R134A add some from can .If all is ok check ac fuse. if nothing works after makeing sure system is full of 134A check if your compressor is working. usually it just needs to be recharged.

I don't beleive there is a DIY kit for recharging window air conditioners. At least not one, that would be reasonably affordable (less than $100.00) . Now, if you have a friend who's in the auto repair business and as part of his work, he recharges automobile AC compressors, he may can help you. As he would have the knowledge to balance the high and low sides of the compressor. As well as evacuate and capture any freon that's left in the system. As freon has be banded by the EPA. R134a is now the refrigerant used in AC compressors. By now, I guess you figured out, that recharging the system is not necessarily a DIY project. It's best left to the pros.

Hope this was of hep to you and thanks for choosing fixture.

the new compressor was likely shipped pre oiled. it should have had a tag on it saying if it was oiled or not, and how much. if you added more oil, the system has probably been over oiled and hydro locked. recover the refrigerant again, if you are working with an actual automotive a c machine you should be able to draw that extra oz of PAG oil out, then recharge refrigerant. hopefully that will do it! otherwise, you could have a restriction in your system, possible from debris in one of the compressors, in which case you will need to flush the lines out. good luck!

Probably the refrigerant fluid pressure is too low. You can get an inexpensive (about $20) R-134a recharge kit with pressure gauge from a discount store (Wal-mart) or auto parts store. Follow the instructions. It's worthwhile to try recharging to see if the a/c system will hold a charge, before you spend more money on expensive diagnostics and repairs. Also, you should try to determine whether the A/C compressor is coming on. If it is working you should be able to hear it engaging. Many A/C compressors are designed to not engage if the fluid pressure is too low, so make sure that the pressure on your recharge gauge is at the recommended level. Possibly the compressor fuse may have blown out, so check the compressor fuse in the fusebox under the hood. If the fuse is ok, and the compressor does not come one even after you have recharged the system, this tells you there might be a problem with the compressor. Another possibility is that the A/C switch has gone bad. You will need to access it with a voltmeter to test it. What you hear behind the glove box is the evaporator. Some low-level noise is normal.

If the blower works but its just not blowing cold air, its possible to recharge the AC system yourself. Most auto parts stores carry AC recharge kits. Instructions to recharge the AC are belowl

RECHARGING AC SYSTEM

1.Turn the truck on and turn AC on HIGH
2.Locate the low side AC line (will have a valve and cap similar to the cap on a tire)
3.Insert the oil or R-134A can to the hose (Do not turn the screw to puncture the can yet)
4.Insert the other end of the refill hose to the low side valve
5.Puncture the R-134A can with the screw on the refill hose
6.You should feel the system suction the refrigerant out of the can
7.Check for frost on the AC lines and the air blowing inside the truck
8.If frost develops and the air is cold, you've successfully recharged the system and disconnect the refill hose. DO NOT ADD MORE REFRIGERANT...overcharging the system will damage your compressor and will be less effective

Best of luck and enjoy your vacation.
Greg

Hopefully this answers your question and you're able to get your AC working again. Best of luck.

First, the old R-12 must be completely evacuated fromt the system. R-12 and R-134A do not mix and won't function together. Once you are sure there's no R-12 left in the system, you need to install an R-134A fill valve on the low side AC line. This is where your refill hose will connect to add R-134A. Once the valve is in place you're ready to fill the system. The compressor requires a minimum of 20psi to engage and should not be filled to more than 45psi.

RECHARGING AC SYSTEM

1.Turn the truck on and turn AC on HIGH
2.Locate the low side AC line (will have a valve and cap similar to the cap on a tire)
3.Insert the oil or R-134A can to the hose (Do not turn the screw to puncture the can yet)
4.Insert the other end of the refill hose to the low side valve
5.Puncture the R-134A can with the screw on the refill hose
6.You should feel the system suction the refrigerant out of the can
7.Check for frost on the AC lines and the air blowing inside the truck
8.If frost develops and the air is cold, you've successfully recharged the system and disconnect the refill hose. DO NOT ADD MORE REFRIGERANT...overcharging the system will damage your compressor and will be less effective
Hopefully this answers your question and you're able to get your AC working again. Best of luck.

it will be a 134a port and located in the low side of the compressor. You will need to just follow the lines with your eye and look for a T or fitting
should have a black cap on it

• no, it should be around $300-$400. but i would consider replacing the machine b4 i would spend $700.
  
• repairclinic.com has the whole compressor kit for your refrigerator for $165.80. comes with start switch, tubing, new filter and everything.  it shouldn't take more than an hour to change the compressor and recharge the system. 134a freon is about $10 for the amount you need.
  

Item #
1376919 Price
$165.80

get a pericing valve from your local appliance parts store 25 inch and put it on the small little what i like to call pig tail make sure your pluged up and running when you do this .go get a can of 134a from autoparts store best one is advance autoparts get a car ac switch over kit from r12 to 134a and in it will be a fitting that will fit your pircing valve then read instructions from their .GOOD LUCK !!!!