can anyone tell me how to remove and replace the a/c drier and expansion valve?

Ive had some a/c problems and am trying to get them fixed before i sell off the car.

Any help is greatly appreciated. Ive already got the replacement parts, just not sure how to correctly do the swap.. Both parts are very hard to access

 

I did some research and found this in the repair manual.. Also here is a link to the manual:
http://homepage.mac.com/gregmeach/XF...ir_24-HVAC.pdf


LIQUID LINE
REMOVAL OF RECEIVER/ DRIER
WARNING: REVIEW THE WARNINGS AND CAUTIONS IN
THE FRONT OF THIS SECTION BEFORE PERFORMING
THE FOLLOWING OPERATION.
1. Evacuate the A/C system. Refer to Page 24-116.
2. Raise and support the vehicle.
3. Remove the left front wheel and tire assembly.
4. Remove the front inner wheel well panel.
5. Remove the liquid line (1) from the receiver/ drier

INSTALLATION
2. Install the liquid line (1) to the receiver/dryer. Tighten to 17
N·m (12 ft. lbs.).
3. Install the front inner wheel well panel.
4. Install the left front wheel and tire assembly.
5. Charge the A/C system. Refer to Page 24-116



SUCTION LINE
REMOVAL OF EXPANSION VALVE
WARNING: REVIEW THE WARNINGS AND CAUTIONS IN
THE FRONT OF THIS SECTION BEFORE PERFORMING
THE FOLLOWING OPERATION.
1. Disconnect the negative battery cable.
2. Recover the refrigerant from the refrigerant system. Refer
to Page 24-116.
3. Remove the retainer nut (1) from the expansion valve (3).
4. Slide the suction line off the stud and liquid line. Remove
the lines from the clip.


INSTALLATION
3. Slide the suction line and the liquid line over the expansion
valve stud. Tighten the nut (1) to 10 N·m (88 in. lbs.).
4. Connect the negative battery cable.
5. Evacuate the refrigerant system. Refer to Page 24-116.
6. Charge the refrigerant system. Refer to Page 24-116.

 

How do you know that you need to replace the txv?? What are the symptoms and pressures?? Woody

 

compressor clutch will not engage- very high pressure on the low side.

Im not positive that they need to be replaced.. however driers are know to go bad and the parts were only 20$ each so why not..

 

How can you have high pressure on the low side if the clutch will not engage? When the system is not working, the high and low sides should equal out. That means the low side will be higher and high side will be lower than normal until the compressor kicks in. We need more info.

James

PS if the expansion valve is stuck closed, you will have too high pressure on the high side, and very low pressure on the low side, like a restriction.

 

thats exactly why i think there is a clog somewhere.. The system was working and just went out on me out of nowhere while i was driving.

So my plan is to just replace these two parts, flush the lines, and see where it stands after that. If its not fixed by then, i will have it in to be checked out by a pro

 

Your low side pressure is high because the unit is not pumping, Try to energize the compressor and dont open the system until you know that it is going to assist you. Dumping the freon and evacuating the system is not cheap or easy to do. Woody

I suspect a problem with the controls.

 

I don't think you read my post correctly. WE STILL NEED MORE INFO. Just throwing parts at a problem can be very costly and uneeded.

 

If the compressor clutch is not engaging, there is an electrical issue to be delt with. Woody

 

If you replace the TXV and Drier you have to buy a $400 vacuum pump to remove air and moisture before recharge. Take the car to a pro. You can't do it. I spent 40 years doing it. Gary

 

I know the system has to be vacuumed after it is opened up.. I do not have the pump to do so, so im bringing it to a pro to have flushed out, then vacuumed and recharged after i replace the parts