Hello
I need to recharge my system after a total discharge. There is no vacuum present and has a zero charge. do i need to vacuum it out or can i just start adding 134a to it? Anyone know how much goes into these things? Thanks for the help!
Nate
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1995 f350 crew long bed, red, 305,256 miles, freshly rebuild with new pistons and rings, 4" ats exhaust with 5" tip, ats wastegate, mag hytec rear diff, edge evolution, edge programmer. bigredf350.net
Unless you know what your doing, let a shop do it. You have to pull a vacuum on the system and make sure it doesnt leak. I did it all in my driveway but my dad is in HVAC-R (heating ventilation airconditioning refrigeration) so it wasnt challenging. Theres a bit of equipment needed. A scale, vacuum pump, gauges.
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1997 F-350, XLT, dually, crew cab, 4x4, 7.3 PSD, zf-5 speed, Autometer Pyro and boost, DpTuner F5, 3.5"DP , B+W turnover goosneck hitch, 2wd to dana 60 swap
/\ /\ /\ What he said..If you have the equipment and know how much 134a goes into the system, there are sources for air driven vacum pumps and gauge sets. There is a formula for how much vacum you need to pull based on elevation and for how long for a complete evacuation of the system. If you lost any oil during the discharge, you will need to know how much and replace it. Easier to flush the system, replace the dryer/reciever and add 1/2 of the oil to the reciever and the other 1/2 to the compressor, then pull the vacum.
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1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
1997 Jayco 323RKS fifth wheel w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here
/\ /\ /\ What he said..If you have the equipment and know how much 134a goes into the system, there are sources for air driven vacum pumps and gauge sets. There is a formula for how much vacum you need to pull based on elevation and for how long for a complete evacuation of the system. If you lost any oil during the discharge, you will need to know how much and replace it. Easier to flush the system, replace the dryer/reciever and add 1/2 of the oil to the reciever and the other 1/2 to the compressor, then pull the vacum.
Yes you need to vacuum. My 1994 takes 32oz of freon. I used three full cans. That allowed for the fact that the manifold and cans retained a little bit of freon during the charge.
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2006 GMC K3500 CC DRW 4x4
1994 F-350 DRW PS w/ zf5
1996 Town Car
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