CAUTION: The oil used in the Denso 10S17 A/C
compressor is ND-8 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 moisture. Refrigerant oil will quickly
absorb any moisture it comes in contact with,
therefore, special effort must be used to keep all
R-134a system components moisture-free. Moisture
in the refrigerant oil is very difficult to remove and
will cause a reliability problem with the A/C com-
pressor.
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 an accumula-
tor, 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 NAME ml. oz.
Total System Fill 180 ml. 6.1 oz.
A/C Condenser 30 ml. 1.0 oz.
A/C Evaporator 60 ml. 2.0 oz.
Accumulator 30 ml. 1.0 oz.
A/C Compressor Drain and measure
the oil from the old
compressor. See
text.
SERVICE PORT VALVE CORE
DESCRIPTION
Refrigerant system service ports are used to
recover, recycle, evacuate, charge and test the A/C
refrigerant system (Fig. 21). 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 liquid
line between the A/C condenser and the A/C evapora-
tor, near the front of the engine compartment. The
low side service port is located on the suction line,
near the air intake plenum at the right rear of the
engine compartment. The 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.
Fig. 21 A/C Service Ports
1 - A/C CONDENSER
2 - HIGH SIDE SERVICE PORT
3 - LIQUID LINE
4 - SUCTION LINE
5 - LOW SIDE SERVICE PORT
6 - TO A/C COMPRESSOR
7 - BOLT
ZB PLUMBING 24 - 55
REFRIGERANT OIL (Continued)
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