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Thread: A/C Experts? Compressor replacement...

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Posts: 41-45 of 45
2015-05-16 16:04:50
#41
Originally Posted by Chipey23
I vacuumed my system down yesterday and it held a vacuum after 40mins. In case you're not familiar of how the gauges are supposed to be when they're in vacuum I added this pic.



Nice! My dad was an A/C guru many moon ago but he could still operate those gauges in his sleep, and he's only a phone call away.
2015-05-16 17:08:16
#42
A/C Experts? Compressor replacement...
Originally Posted by SE-RMonkey
Originally Posted by Chipey23
I vacuumed my system down yesterday and it held a vacuum after 40mins. In case you're not familiar of how the gauges are supposed to be when they're in vacuum I added this pic.



Nice! My dad was an A/C guru many moon ago but he could still operate those gauges in his sleep, and he's only a phone call away.

Nice!!! My Dad still services A/C equipment so it's in the lineage. Keep us updated on the progress.
2015-05-16 18:42:22
#43
Harbor Freight vacuum pump arrived today.
2015-05-17 01:33:06
#44
Here is the leak I found on my xterra. Its hard to tell but the sensor has a green tint to it from the oil. Pag oil has a flourecent yellow green color. Pag oil also attracts dust and dirt heavily. So keep an eye out for this odd dusty/ oily spots aroung fittings.I replaced three orings in all.


Here are my final pressures. The low side on a 80 degree day should be about 30 or so. High side is relative. I usually only pay attention to the high side only if the system is cycling which will be the case in 100+ weather.

The inside temp from the vent has to be at least 30 degree lower than ambient.
2015-05-20 18:41:51
#45
If you are going with a rebuilt or new compressor it should not come with the oil in it.
I just replaced mine with a rebuilt compressor and it stated in the instructions to add the recommenced amount of pag oil
witch should be 6.8-7.0 oz if just replacing the compressor or a additional 1.0 oz if replacing the dryer.
If the system was opened up always replace the dryer.
Pull a vacuum down to 28 hg for 30 min and hold or 30 min to check for leaks.
Charge with 1.5 to two cans of Freon and should read between 28 -32 0n the r34 gauges
if the system has not been in working condition or is questionable replace the expansion valve and the condenser.
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