Forum Discussion

smlranger's avatar
smlranger
Explorer
Dec 05, 2013

Leaking AC fitting

Yesterday I noticed what appears to be a tiny bit of oil (mostly an oil smudge) around one of the service connections for the auto AC. The oil seems to be leaking where the hose enters the crimped fitting.
I suspect if I am leaking compressor oil, refrigerant will follow.

This hose is routed from the engine bay all the way to the front of the coach. Can this connection be repaired without replacing the entire hose? I am thinking a new fitting re-crimped or some sort of compression type of fitting.
Class A
  • hooligan's avatar
    hooligan
    Explorer
    Dec 07, 2013
    Fittings on my system have a o-ring seal. Had an oil leak, they evac'ed the system, replaced the o-ring and re-charged.
    (2000 XCS chassis with Evans tempcon air conditioner) Evans Tempcon
  • RLS7201's avatar
    RLS7201
    Explorer II
    Dec 05, 2013
    Easy repair. Evacuate the refrigerant, cut off the fitting and replace it with a barbed fitting and clamp. The clamp will come with an extension to properly position it. You will need to determine if you have tube-o-ring of flair fitting and which size. Pump system down and re-charge. Now were going to hear from those that haven't worked in the HVAC business, why they would never use a fitting with a clamp. SOP for automotive AC repair. Fittings can be found in most auto parts houses.

    Richard
  • smlranger's avatar
    smlranger
    Explorer
    Dec 05, 2013
    MountainAir05 wrote:
    It can if you can find someone who has a portable crimp tool and you have extra length to cut back. If it leaking oil, then its leaking refrigerant. You can also replace it with refrigerant copper and clamp it down all the way to the front, then put on brass brazed fitting at a greatly reduce price over that much hose. You can also have a 1+ foot hose assy made for the front, and I would use the flex hose back on the engine.


    Thanks. I will likely be taking the coach to my local Cummins Coach Care shop so hope they will have a fix that let's me keep the existing hose. I do have enough slack in the hose to have some cut off to accommodate a new crimped fitting.

    Replacing the hose with copper would be labor intensive, for sure. 42' rig and that hose is bundled into a mass of hoses, wires, air lines that run between the frame rails.
  • MountainAir05's avatar
    MountainAir05
    Explorer II
    Dec 05, 2013
    It can if you can find someone who has a portable crimp tool and you have extra length to cut back. If it leaking oil, then its leaking refrigerant. You can also replace it with refrigerant copper and clamp it down all the way to the front, then put on brass brazed fitting at a greatly reduce price over that much hose. You can also have a 1+ foot hose assy made for the front, and I would use the flex hose back on the engine.

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