C 2500 Truck 2WD V8-5.7L VIN R (1997)
and help to provide a leakproof joint. O-ring seals and seats must be in perfect condition because a burr or a piece of dirt can cause a refrigerant
leak.
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It is important to use the proper wrenches when making connections on O-ring seal fittings. The use of improper wrenches may damage the
connection. The opposing fitting should always be backed up with a wrench to prevent distortion of connecting lines or components (Figures 14
and 15). When connecting the flexible hose connections, it is important that the stagged fitting and the flare nut, as well as the coupling to which it
is attached, be held at the same time using three different wrenches to prevent turning the fitting and damaging the seat.
Tighten tubing connections to the specified torque.
