Categories
Heating, Ventilation and Air Conditioning

nsxb22069a.pdf

A/C Service Tips and Precautions
The air conditioning system uses HFC-134a (R-134a) refrigerant and polyalkyleneglycol (PAG) refrigerant oil (ND-OIL
8: P/N 38899-PR7-A01), which are not compatible with CFC-12 (R-12) refrigerant and mineral oil. Do not use R-12 refriger-
ant 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.
Only use service equipment that is U.L.-listed and is certified to meet the requirements of SAE J2210 to remove R-134a;
from the air conditioner system.
CAUTION: Exposure to air conditioner refrigerant and lubricant vapor or mist can irritate eyes, nose and throat, Avoid
breathing the air conditioner refrigerant and lubricant vapor or mist.
If accidental system discharge occurs, ventilate work area before resuming service.
R-134a service equipment or vehicle air conditioner systems should not be pressure tested or leak tested with compressed
air.
Some mixtures of air and R-134a have been shown to be combustible elevated pressures and can result
in fire or explosion causing injury or property damage. Never use compressed air to pressure test R-134a service
equipment or vehicle air conditioning systems.
Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.
1. Always disconnect the negative cable from the battery whenever replacing air conditioning parts.
2. Keep moisture and dust 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.
3. Before connecting any hose or line, apply a few drops of refrigerant oil (ND-OIL 8) to the O-ring.
4. When tightening or loosening a fitting, use a second wrench to support the matching fitting.
5. When recovering the system, use a R-134a refrigerant Recovery/Recycling/Charging System; don’t release
refrigerant into the atmosphere.
6. Add refrigerant oil (ND-OIL 8) after replacing the following parts:
NOTE:
• Do not return the oil to the container once dispensed and never mix with other refrigerant oils to avoid
contamination.
• Immediately after using the oil, replace the cap on the container and seal it to avoid moisture absorption.
• Do not spill the refrigerant oil on the car; it may damage the paint; if the refrigerant oil contacts the paint, wash it
off immediately.
Condenser ……………………. 10 cc (1/3 fl oz)
Evaporator ……………………. 10 cc (1/3 fl oz)
Line or hose …………………… 20 cc (2/3 fl oz)
Receiver ………………………. 10 cc (1/3 fl oz)
Compressor …………………… On compressor
replacement, subtract the volume of oil drain-
ed from the removed compressor from 140 cc
(4-2/3 fl oz), and drain the calculated volume
of oil from the new compressor: 140 cc (4-2/3
fl oz) — Volume of oil from removed com-
pressor = Volume to drain from new com-
pressor.
CORROSION RESISTANT BOLT
Suction hose and discharge hose
to A/C lines …………………. 22 N-m (2.2 kg-m, 16 Ib-ft)
Discharge line C
(both sides) …………………. 23 N-m (2.3 kg-m, 17 Ib-ft)
Condenser line A
(both sides) …………………. 23 N-m (2.3 kg-m, 17 Ib-ft)
Condenser line C to left side
condenser …………………… 14 N-m (1.4 kg-m, 10 Ib-ft)
Receiver/dryer ……………… 14 N-m (1.4 kg-m, 10 Ib-ft)
Receiver line and suction line to heater
assembly ……………………. 22 N-m (2.2 kg-m, 16 Ib-ft)
Compressor hose mounting
bolts …………………………. 22 N-m (2.2 kg-m, 16 Ib-ft)
Compressor mounting
bolts …………………………. 25 N-m (2.5 kg-m, 18 Ib-ft)
Compressor bracket
mounting bolts …………….. 50 N-m (4.5 kg-m, 36 Ib-ft)
Idler pulley center nut …….. 45 N-m (4.5 kg-m, 33 Ib-ft)
6 mm bolt ……………….. 10 N-m (1.0 kg-m, 7 Ib-ft)

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