I just went threw this on my truck. The condenser side hose the metal ends were about rusted off. I found a bad hose with good metal ends. Here are some pic's and part numbers.
This first pic shows the old hose with the spring lock connection removed.
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This pic shows the new spring lock with a section of hose attached. That hose is long till fitting in the truck. The smaller hose has a compression fitting to #6 barrier hose for 134. That hose is long also. The other end of the hose is shown with its compression fitting for the dry end.
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This pic shows the compressor end of the large hose. That hose is a #8 hose. Both are bigger than the factory hoses were. But I couldn't the fittings I needed for the smaller hoses.
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Here is a pic of the finished condenser side of the hoses.
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Here is the compressor side finished.
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Here is the dryer side. Now during mock up I didn't like the looks of that straight fitting. You can't get it with a 45 degree bend. I tried.
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Parts used.
Small compression fitting at the condenser. NAPA 401050
Larger compression at the dryer. NAPA 401067
90 degree fitting at the compressor. NAPA 406902
spring lock connection. NAPA 405472
134 conversion adapters for the R12 fittings. 409902 and 409903
Any parts store should be able to cross these numbers out. They are dorman numbers.
I have not done the larger hoses yet. I needed the A/C up and running for MM event in a few weeks. 134 is cheap. I'll just drain it later and do the large hoses.
BTW those compression fitting used are the same type used on hyd steel tubing. These are rated a lot higher PSI than a A/C system will ever see.