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oil amount

thepear on Wed August 26, 2009 3:37 PM User is offlineView users profile

Year: 1998
Make: chevy
Model: tahoe
Engine Size: 5.7
Refrigerant Type: 134a
Country of Origin: United States

I installed a new accumulator - new manifold hose assembly - new condenser - new evaporator tube - new orphis tube - and new re-built compressor...The only thing that is not new is the evaporator. I did flush the evaporator completely.. When I got everything back together, I put 8 ounces of oil in the system and 36 ounces of 134a - as per factory spec. The system ran great for about 30 minutes, so I thought everything was good and went to bed......NOT!!! The next day I discovered that all of the refrigerant leaked out because the case o-ring on the new re-built compressor was installed wrong or damaged during rebuilding. I removed the new re-built compressor (to change it out for another new compressor) and there was not much oil in the defective compressor itself. I am assuming that the 8 ounces that I put in the DRY system is spread out in the system itself because it operated properly for about 30 minutes or so....

My question is this - how much oil (if any) should I add to the new compressor being that the system has a full 8 ounces already in it? Remember the system is 99% new.

HVargas on Wed August 26, 2009 3:42 PM User is offlineView users profile

Add exactly the amount that you drain out of the rebuilt one.

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daman on Wed August 26, 2009 4:59 PM User is offlineView users profile

So this is a front ac system only??? if so 8oz is for the entire system.

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'00 Pontiac Sunfire 2200 I4 SFI
'99 Chevy 4x4 Z-71 5.7 Vortec v8 CPFI
'97 Chevy 4x4 6.5 Turbo Diesel 2500
'95 Pontiac Grand Am GT 3100 v6 SFI
'88 Chevrolet Camaro IROC 5.7 TPI(49,000 original miles)

Edited: Wed August 26, 2009 at 5:00 PM by daman

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