A/C Orifice Tube Location?

[Low_Bridge]

Where is the AC orifice tube located at? (dual air 94 K2500 6.5 4x4 Burb)

Thanks

[Robyn]

On the front AC unit, the orifice is located right inside the connection where the high pressure line connects to the Evaporator at the firewall.

The orifice plugs inside the line. Usually there is a little tab inside the line on the end of the tube to pull it out with. There will also be a plastic screen on the tube too.

The rear units (Burbs) use an expansion valve near the rear evaporator core.


Best

Missy

[Low_Bridge]

OK- so I replaced the accumulator / dryer & didn't see the orifice tube at the fire wall-

I'm guessing I didn't miss it & it's the outboard one (Left Line) in the picture that runs along the frame rail?

Yuk, looks like no fun to get at-
Please clarify thanks

Attachment 1661

[DmaxMaverick]

The tube is inside the coupler on the high pressure side (smaller tubing) just before the firewall. It looks like the one in your picture (probably is that coupler). Loosen/separate the connector, and you should see the orifice tube tab (used to pull it out). Be sure the system is evacuated, first.

[DaveNY]

On my 99' the tube was in the line at the coupling under the pass side battery tray just in side the radiator support as it enters the engine bay.
Dave

[Low_Bridge]

Hey Dave,

Actually I looked there first but wasn't there on this dual air 94 . I guess they moved them around-
I'll report back after I find my treasure.