- Joined
- Dec 7, 2012
- Messages
- 3,597
This past February when the 6.0 was swapped in my Tahoe, a new A/C compressor and condenser were put on the truck by a friend. It has been pretty warm lately, so I was itching to get my system charged.
Bought a vacuum pump and gauges and put tried to pull a vacuum on my Tahoe's A/C system. I could not get over 10in of mercury. I could hear air suction from around the compressor suction and return lines.
Ran to the parts store and picked up a factory air seal kit -- figuring maybe a seal was bad. Got home with the seals, pulled a line off and there was NO seals... well that explains it! I just assumed the old seals were put in, but I'd bet they stuck to the old compressor.
Put new seals on lubed with a little PAG oil. Hooked the manifold gauges back up and it quickly pulled a vacuum. Let it sit for about an hour and it held just fine. Pulled a vacuum for another 45 minutes to completely evacuate the system. Added a little over 2 12oz cans (I do have rear HVAC but have the rear A/C lines capped off). I now have about 40 degree F air coming out of my vents.
Happy and pleased. I guess seals are important.
Bought a vacuum pump and gauges and put tried to pull a vacuum on my Tahoe's A/C system. I could not get over 10in of mercury. I could hear air suction from around the compressor suction and return lines.
Ran to the parts store and picked up a factory air seal kit -- figuring maybe a seal was bad. Got home with the seals, pulled a line off and there was NO seals... well that explains it! I just assumed the old seals were put in, but I'd bet they stuck to the old compressor.
Put new seals on lubed with a little PAG oil. Hooked the manifold gauges back up and it quickly pulled a vacuum. Let it sit for about an hour and it held just fine. Pulled a vacuum for another 45 minutes to completely evacuate the system. Added a little over 2 12oz cans (I do have rear HVAC but have the rear A/C lines capped off). I now have about 40 degree F air coming out of my vents.
Happy and pleased. I guess seals are important.