Mitsubishi 3000GT 1991, Service Manual

Page: 1096 / 1146

Caution
R-l 2
Adaptor
Never use the high pressure side as this may cause
valve
refrigerant to flow back, using rupture of the service
can.
(7) Start the engine.
Charge valve
hose
HEATERS AND MANUAL AIR CONDITIONER Adjustment
procedures
CORRECTING LOW REFRIGERANT LEVEL
Install the charge valve to the service can with its handle
turned back all the way.
(2) Connect the charging hose to the charge valve.
Connect the adaptor valve to the charging hose with its
handle turned back all the way.
(4) Tighten the charge valve handle to puncture the can.
Operate the adaptor valve handle to bleed air.
(6) Install the adaptor valve to the low pressure side service
valve.
(8) Operate the air conditioner and set at the lowest tempera-
ture (MAX. COOL).
(9) Fix the engine speed at 1,500 rpm.
the adaptor valve and charge refrigerant checking
level with the sight glass.
(1 l)Upon completion of charging, close the adaptor valve and
charge valve.
(12)Remove the adaptor valve from the service valve.
NOTE
If the service can is not emptied completely, keep the
charge valve and adaptor valve connected to the can for
next charging.
Adaptor
v a l v e
DISCHARGING SYSTEM
Use the refrigerant recovery unit to discharge refrigerant gas
from the system.
NOTE
Refer to that Refrigerant Recovery and Recycling Unit Instruc-
tion Manual for operation of the unit.
REFILLING OF OIL IN THE AIR CONDITIONER SYSTEM
Too little oil will provide inadequate compressor lubrication and
cause a compressor failure. Too much oil will
discharge air temperature.
When a
compressor is installed at the factory, it
contains cc (9.8 of refrigerant oil. While the air
conditioning system is in operation, the oil is carried through
the entire system by the refrigerant.
Some of this oil will be trapped and retained in various parts of
the system.
When the following system components are charged, it is
necessary to add oil to the system to replace the oil being
removed with the component.
Condenser: 8 cc
Evaporator: 72 cc (4.4
Piping: 9.6 cc
Receiver drier: 6.4 cc
TSB
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