TM 10-4130-237-14
5-7.
REFRIGERATION SYSTEM LEAK-TEST (CONT)
10 Move probe slowly over entire system. If any leaks are present, it will make a beeping sound. The
nearer to a leak the probe is held, the more rapid the beeps will become.
11 If a leak is found, discharge system (aram 5-9). Tighten fitting or replace defective component as
needed.
12 If no leaks are found, evacuate and charge refrigeration system (para 5-9).
c.
Soap Solution Method. In this method, liquid detergent mixed with water is brushed onto possible leak points.
Bubbles will form in the solution where gas is escaping.
1
2
3
4
5
6
7
Pressurize system with refrigerant gas (subpara b, steps 1 thru 8).
Dilute liquid soap with small amount of water.
Using small brush, coat system with soap solution.
If leak is present, bubbles will appear in soap solution.
Rinse off soap solution with clear water after test is complete.
If leak was found, discharge system (para 5–9). Tighten fitting or replace defective component as
needed.
If no leaks were found, evacuate and charge refrigeration system (para 5-9).
INITIAL SETUP
5-8.
REFRIGERATION SYSTEM PRESSURE TEST
This task covers testing only.
Equipment
Condition
Para
Condition Description
5-2
Engine stopped, power
disconnected, fuel line
disconnected, muffler
and housing removed.
Tools
Refrigeration Service Unit Tool
Kit, item 5, appendix B
5-30
