Question about 2002 Chevrolet TrailBlazer

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Need to know how many hours it takes to replace a/c compressor, orfice tube and accumulator dryer on a '02 trailblazer, vacuum and recharge system.

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Professionally speaking, book time is about 5.0 hours. That would be an accurate time for a professional, with the necessary tools and required equipment.

Posted on Dec 30, 2010

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I have a po532/po533 replaced the whole system less evap. Core performed evac it held 29in i recharge the system to one pound fourteen oz and system is cold excellent pressure high and low shut off a half...


There is a lot more to it than that. This is why the service bill is so high. Did you replace the Orifice tube or expansion valve? Did you replace the receiver/dryer? Did you flush the whole system out with solvent? Did you put the oil back in?

The proper steps are:

1. Remove any Freon with a recovery station.
2. Isolate and remove the compressor.
3. Remove and discard the receiver/dryer.
4. Remove and discard the orifice tube/expansion valve.
5. Flush the system with solvent and catch the discharge to check for rust and debris. If any are found, replace the whole system.
6. Replace the orifice tube / expansion valve with new one.
7. Replace the receiver/drier with new one.
8. Replace the oil in the system with fresh oil in the right amount.
9. Connect all compressor fittings on the compressor.
10. vacuum the unit down for at least 4 hours.
11. Recharge the system. Check performance and leaks.

Aug 09, 2014 | Cars & Trucks

1 Answer

How to install orfice tube on a 2003 ford e350 van


evacuate the a/c system,separate the high side line where the orfice tube is located,pull the old tube out of line. lubricate the new orfice o-ring with a/c oil,push into the line,reconnect the line be sure to replace the o-rings at the connection.pull a vacuum on the a/c system for at least 30 minutes,then recharge the system.

Jun 20, 2012 | Cars & Trucks

1 Answer

The clutch on the a/c compressor is shot. I was going to replace the compressor. Do I need to also change the accumulator/receiver dryer, and or the condenser too? It is a 1996 Ford Explorer, Eddy...


You need to change the dryer and orfice tube. You should also flush the evaporator, lines and condenser with an approved ac flush. Add the proper amount of refrigerant oil to the system and pull a vacuum and charge it.

Aug 25, 2011 | 1996 Ford Explorer

1 Answer

I am replacing the AC Compressor on my 1999 Chevy Lumina 3.1 with a rebult. Will I need to recharge the AC system and if so, what is the cost associated with that?


Once the repairs are completed the system should be evacuated and held under vacuum for at least 45 minutes to an hour to boil off any moisture that has accumulated. It can then be charges with the appropriate amount of refrigerant. Moisture in the system can cause it not to function correctly.

If the system has not been operational or the compressor failed internally the receiver dryer/accumulator should also be replaced. Most compressors are not warrantied if the receiver drier is not replaced.

Dec 16, 2010 | 1999 Chevrolet Lumina

1 Answer

When doing an Evac of the AC system where do you hook up the vacuum pump to the high side or low side fitting. The vehicle has to not be running also, right? I just replaced the AC compressor, the...


any charge port will evac the system
the compressor will not be running
adding oil is not necessary as there is enough in the replacement compressor
run the vacuum pump for a couple of hours and then lock of the system to see it it holds vacuum

May 07, 2017 | 1996 Toyota Tacoma

2 Answers

My ac compressor locked up. What needs to be


I would suggest leak testing it you can take hose with clamps to the outlet and put a psi gauge on it then hook a compressor to the other end with a hose with clamps. This will show you if you have any obvious leaks you dont need alot 10psi and hold as long as you would like atleast a min you can also spray it with soap bubles to be sure. the condenser if its not leaking would be fine with a flush.

Apr 06, 2010 | 1998 Chrysler Town & Country

1 Answer

I have replaced the ac compressor accumulator and it will not engage the compressor.


di you replace the orfice tube; drain the system of freon, and recharge the entire system, and put the pag oil back in? If this was not done, your system will not work, because of an auto shut off valve.

Sep 05, 2009 | 1994 Lincoln Mark VIII

1 Answer

Ac not working Dodge ram 2500 diesel


compressor is shot ,replace it and dryer orfice tube or exspansion valve

Jun 29, 2009 | 2004 Dodge Ram 2500

2 Answers

Help with accumulator question.


The accumulator is 17 years old, therefore it would be smart to replace it while the A/C compressor
is being replaced. There are no special steps for removal or replacement of the accumulator just
be sure all the fittings are tight.

May 16, 2009 | 1998 Lincoln Town Car

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