1-4. TROUBLESHOOTING PROCEDURES
General troubleshooting information for locating and correcting many of the
operating malfunctions which may develop in the refrigerator are listed in the
troubleshooting guide in the appendix. Because local units do not have Freon recovery
systems, they do not remove and replace components once they isolate a malfunction.
Also, you cannot cut lines carrying Freon because it may cause a Freon leak. Only in a
combat situation are you permitted to make repairs which allow Freon leaks.
1-5.
COPPER TUBING REPAIR
a. Flare the Tubing.
(1)
Cut off 1 or 2 inches of copper tubing from stock copper tubing.
(2)
Remove any burrs from the copper tubing by using the reamer or cutter.
(3) Place the copper tubing piece in the flaring tool block with about 1/16
inch of the tubing (about the thickness of a nickel) above the flaring tool block.
(4)
Lubricate the flaring tool threads with oil to obtain better performance of
the tool.
(5)
Position the flaring tool over the copper tubing on the flaring tool block.
(6) Compress the copper tube solidly against the counter-sunk recess of the
flaring tool block by turning the flaring tool handle clockwise (CW).
NOTE:
Too much pressure may split the flare, and too little pressure will not make
the flare wide enough. A lopsided flare results from flaring out-of-round
tubing.
(7)
Remove the flaring tool from the copper tubing.
(8)
Remove the copper tubing from the flaring tool block and check the flare
for defects.
(a) The flare wall thickness should be equal all around.
(b) The flare should drag easily through the flare nut.
b. Swage the Tubing.
(1)
Cut off 1 or 2 inches of copper tubing from stock copper tubing.
(2)
Remove any burrs from the copper tubing by using the reamer on cutter.
MD0367
1-8