Wrap a piece of tape around the hose twice and mark to the correct length for cutting. Using a cut-off saw with a knife blade or equivalent, cut the hose through the tape where marked. This must be a clean, straight cut, otherwise, hose assembly will be difficult.

Using a knife, remove any burrs or debris from the end of the hose. Clean the hose out thoroughly before assembling fittings.

Once the hose is cut and cleaned, insert the hose through the socket (the threads should be facing in the direction that the nipple will be inserted).

With the socket slid on the hose, remove the tape. Be sure to remove all of the tape. Using a knife if neccessary.

Insert the fitting nipple gently into the end of the hose.

Using a slow rotating motion, roll the fitting nipple around inside the hose so that the braid separates from the tube as shown. Be careful not to stretch the tube too much, or it will not fit into the sleeve in Step 7.

Push the sleeve over the end of the blue tube and under the wire braid by hand. Complete positioning of the sleeve by pushing the hose end against a flat surface. Visually inspect to see that the tube stock butts against the o-ring on the inside of the sleeve. Be careful not to kink or damage the hose during this process. If the hose is damaged, a new piece must be cut and used.

Lubricate the nipple with refrigerant oil.

Insert the lubricated nipple into the hose.

Using a rotating motion untill the nipple has bottomed out into the sleeve. Be very careful not to kink or crush the hose.

With the nipple fully inserted, slide the socket back up the hose to the nipple threads.

Hand tighten the socket to the nipple.

Using a wrench, tighten the nipple the rest of the way onto the socket. It is ok if he hose rotates during theis process. Be careful not to over-tighten the threads, this could cause stripping.

Repeat Steps 2 thru 13 to complete the other end of hose assembly. Once assembled remove any contaminants from the hose before installing it into the A/C system.