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 TM 10-3930-673-34
e. Charging System.
NOTE
If A/C system requires replacement
of a major component, refrigerant
oil must be added to system to
compensate loss (refer to task f.).
(1)
Evacuate A/C system (refer to task d.).
(2)
Connect refrigerant R-134 source to
center hose (5) of manifold gage set (3).
(3)
Open refrigerant R-134 source to allow
refrigerant to flow into center hose (5).
(4)
Purge center hose (5), low pressure
hose (6), and high pressure hose (4) as
follows:
(a)
Loosen center hose (5) at manifold gage
set center port (7) slightly until
refrigerant escapes, then tighten hose (5).
(b)
Open high pressure gage valve (2) and
low pressure gage valve (1) to allow
refrigerant to flow into high pressure
hose (4) and low pressure hose (6).
4
(c)
Purge high pressure hose (4) and low
pressure hose (6) at service valve ports at
(d)
Turn high pressure gage valve (2) and
low pressure gage valve (1) clockwise to
off position.
(5)
Connect STE/ICE (TM 9-2320-280-20) to
6
obtain engine RPM reading.
15-9
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