Standard Procedure; Refrigerant Oil Level; Service Port Valve Core - Jeep KJ 2005 Service Manual

24 - 66 PLUMBING
REFRIGERANT OIL (Continued)
tainer immediately to prevent moisture contamina-
tion.

STANDARD PROCEDURE

REFRIGERANT OIL LEVEL

WARNING: Review safety precautions and warnings
in this group before performing this procedure
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - WARNINGS) and (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - CAUTIONS).
Failure to follow the warnings and cautions could
result in possible personal injury or death.
CAUTION: The oil used in the A/C compressor is
SP-15 PAG R-134a refrigerant oil. Only refrigerant
oil of the same type should be used to service the
A/C system. Do not use any other refrigerant oil.
The oil container should be kept tightly capped
until it is ready for use and then tightly capped after
use to prevent contamination from dirt and mois-
ture. Refrigerant oil will quickly absorb any mois-
ture it comes in contact with, therefore, special
effort must be used to keep all R-134a system com-
ponents moisture-free. Moisture in the refrigerant
oil is very difficult to remove and will cause a reli-
ability problem with the A/C compressor.
NOTE: Most reclaim/recycling equipment will mea-
sure the lubricant being removed during recovery.
This amount of lubricant should be added back into
the system. Refer to the reclaim/recycling equip-
ment manufacturers instructions.
It will not be necessary to check the oil level in the
A/C compressor or to add oil, unless there has been
an oil loss. An oil loss may occur due to a rupture or
leak from a refrigerant line, a connector fitting, a
component, or a component seal. If a leak occurs, add
30 milliliters (1 fluid ounce) of refrigerant oil to the
refrigerant system after the repair has been made.
Refrigerant oil loss will be evident at the leak point
by the presence of a wet, shiny surface around the
leak.
Refrigerant oil must be added when a receiver/
drier, A/C evaporator or A/C condenser is replaced.
See the Refrigerant Oil Capacities chart. When an
A/C compressor is replaced, the refrigerant oil must
be drained from the old compressor and measured.
Drain all of the refrigerant oil from the new A/C com-
pressor, then fill the new compressor with the same
amount of refrigerant oil that was drained out of the
old compressor.
REFRIGERANT OIL CAPACITIES
Component
Total System Fill
A/C Accumulator
A/C Condenser
A/C Evaporator
A/C Compressor

SERVICE PORT VALVE CORE

DESCRIPTION
Refrigerant system service ports are used to
recover, recycle, evacuate, charge and test the A/C
refrigerant system (Fig. 20). Unique sizes are used
on the two service ports for the R-134a refrigerant
system to ensure the system is not accidentally con-
taminated with R-12 refrigerant or by service equip-
ment used for R-12 refrigerant.
The high-side service port is located on the A/C dis-
charge line near the A/C condenser. The low-side ser-
vice port is located on the A/C liquid line near the air
filter housing. Both the high-side and low-side A/C
service port valve cores are serviceable.
NOTE: The protective cap aids in service port seal-
ing and helps protects the refrigerant system from
contamination. Remember to always reinstall the
protective cap onto the service port when refriger-
ant system service is complete.
Each of the service ports has a threaded plastic
protective cap installed over it from the factory. The
service port caps are serviceable items.
REMOVAL
WARNING: Refer to the applicable warnings and
cautions for this system before performing the fol-
lowing operation (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING - WARNINGS) and (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
CAUTIONS). Failure to follow the warnings and cau-
tions could result in possible personal injury or
death.
KJ
ml oz
240 8
120 4
30 1
60 2
Drain and measure the oil
from the old compressor
as noted