DRAFT
TB 9-2320-364-13&P-1
AC DOES NOT COOL OR COOLS INADEQUATELY - Continued
WARNING
Moving engine components can cause severe injury. Keep away from fan, belts, and pulleys while
engine is running.
Wear protective goggles and nonleather gloves when servicing air conditioner system. Failure to
comply may result in injury to personnel.
Pressure Temperature Chart
F
C
HFC-134a (PSI)
F
C
HFC-134a (PSI)
0
-17.8
6.5
85
29.4
94.9
5
-15.0
9.0
90
32.2
103.9
10
-12.2
12.0
95
35.0
113.5
15
-9.4
15.0
100
37.8
123.6
20
-6.7
18.4
105
40.6
134.3
25
-3.9
22.1
110
43.3
145.3
30
-1.1
26.1
115
46.1
157.6
35
1.7
30.4
120
48.9
170.3
40
4.4
35.0
125
51.7
183.6
45
7.2
40.0
130
54.4
197.6
50
10.0
45.3
135
57.2
212.4
55
12.8
51.1
140
60.0
227.9
60
15.6
57.3
145
62.8
244.3
65
18.3
63.9
150
65.6
261.4
70
21.1
70.9
155
68.3
279.5
75
23.8
78.4
160
71.1
298.4
80
26.7
88.4
165
73.9
318.3
NOTE
System low-side pressure is determined by the temperature of the R-134a refrigerant at the low-side
service valve.
System high-side pressure is determined by the ambient temperature of the air surrounding the AC
condenser. The ambient temperature is determined by measuring the temperature 2 in. (5 cm) in front of
the AC condenser.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
PRESSURE TEST
Inspect AC test set recovery/recycling manifold low-side
gage reading.
(a) If gage reading is not within the range
indicated in the chart shown above for normal
low-side pressure, go to Step 10 of this fault.
(b) If gage reading is within the range indicated in
the chart shown above for normal low-side
pressure, go to Step 6 of this fault.
PLSAC206
