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Heating and Air Conditioning
A/C
Service Tips and Precautions
AWARNING
Compressed air mixed with R-134a forms a
combustible vapor.
The vapor can burn or explode causing serious
injury.
Never use compressed air to pressure test
R-134a service equipment or vehicle air
conditioning systems.
ACAUTION
• Air conditioning refrigerant or lubricant vapor
can irritate your eyes, nose, or throat.
Be careful when connecting service equipment .
• Do not breathe refrigerant or vapor.
The air conditioning system uses HFC-134a IR-134al
relrigerant and polyalkyleneglycol (PAGI relrigerant oil,
which are not compatible with CFC-12 IR-121 relrigerant
and mineral oil. Do not use R-12 refrigerant or mineral
oil in this system, and do not attempt to use R-12
servicing equipment; damage to the air conditioning
system or your servicing equipment will result.
Use only service equipment that is U.L.-listed and is
certilied to meet the requirements 01 SAE J2210 to
remove R-134a from the air conditioning system.
If accidental system discharge occurs, ventilate the
work area before resuming service.
R-134a service equipment or vehicle air conditioning
systems should not be pressure tested or leak tested
with compressed air.
Additional health and salety inlormation may be
obtained from the refrigerant and lubricant
manufacturers.
• Always disconnect the negative cable from the
battery whenever replacing air conditioning parts.
Keep moisture and dirt out of the system. When
disconnecting any lines, plug or cap the fittings
immediately; don't remove the caps or plugs until
just before you reconnect each line.
Before connecting any hose or line, apply a few drops
of refrigerant oil to the O-ring.
When tightening or loosening a fitting, use a second
wrench to support the matching fitting .
• When discharging the system, use a R-134a
refrigerant recovery/recycling/charging station; don't
release refrigerant into the atmosphere.
21-6
A/C
Refrigerant Oil Replacement
Recommended PAG oil: KEIHIN SP-10:
PIN 38897-P13-A01AH: 120 mQ (4 II·ozl
PIN 38899-P13-A01: 40 mQ (1 1/311·ozl
Add the recommended refrigerant oil in the amount
listed il you replace any 01 the lollowing parts.
• To avoid contamination, do not return the oil to the
container once dispensed, and never mix it with other
refrigerant oils.
Immediately after using the oil, reinstall the cap on
the container, and seal it to avoid moisture
absorption.
Do not spill the relrigerant oil on the vehicle; it may
damage the paint. II it gets on the paint, wash it off
immediately.
Condenser .......... 25 mQ (5/6 II·oz, 0.9 Imp·ozl
Evaporator ........... 45 mQ 11 1/3 II·oz, 1.4Imp·ozl
Line or hose ......... 10 mQ (1/3 II·oz, 0.4Imp·ozl
Receiver/Dryer .... 10 mQ 11/3 II·oz, 0.4Imp·ozl
Leakage repair .... 25 mQ 15/6 II·oz, 0.9Imp·ozl
Compressor ......... For compressor replacement,
subtract the volume of oil drained
from the removed compressor from
130 mQ 14 1/3 II·oz, 4.6 Imp·ozl, and
drain the calculated volume of oil
from the new compressor: 130 mQ
141/3 II·oz, 4.6Imp·ozl - Volume 01
removed compressor
=
Volume to
drain from new compressor.
REMOVED
COMPRESSOR
NOTE: Even if no oil is drained from
the removed compressor, don't
drain more than 50 mQ 112/3 II·oz,
1.8Imp·ozl lrom the new
compressor.
NEW
COMPRESSOR
D : :
n::
_
SAME LEVEL
D }
DRAINING}
D
-u
VOLUME
:A
A: 130 mQ. (41/3 fl·oz, 4.6Imp·ozl
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