TUBING AND FITTINGS - TM-5-4120-347-140158

TM5-4120-347-14

NOTE

If any refrigeration piping was disconnected with the compressor being replaced, transfer the piping

to the replacement compressor before installing it in the air conditioner.

(2) Carefully set the compressor down onto the four sets of mounting hardware.

(3) Secure the compressor in place with remaining flat washers and lock nuts.

(4) Braze tube connections in accordance with paragraph 5-11.

(5) Replace the dehydrator.

(6) Connect the P10 connector.

(7) Leak test the newly connected joints and all connections in the area.

(8) Install the top rear cover.

(9) Evacuate and charge the refrigeration system in accordance with paragraphs 5-13 and 5-14.

5-31. TUBING AND FITTINGS

The refrigeration system contains a number of pieces of copper tubing in a variety of material grades, sizes,

lengths, and shapes, and a number of elbows, tees and adapters in several sizes. Observe the following when

replacing any piece of tubing or fitting in the system:

Be sure the refrigeration system is fully discharged and purged, and that dry nitrogen is flowing

through the system at a rate of 1-2 cfm (0.028 -0.057 m3/minute) before brazing or debrazing.

a. Replace tubing and fittings only with equal material, grade, size, length, and shape as the item removed.

b. Leak test the entire refrigeration system in accordance with paragraph 5-12 after any replacement action

that required brazing.

c. Replace the dehydrator and leak test the dehydrator flare fittings as the final step in any maintenance

act ion that required the refrigeration pressure system to be opened.

d. Evacuate and charge the refrigeration system in accordance with paragraphs 5-13 and 5-14 after all

other maintenance actions are completed.

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