The air conditioning system uses R-134a refrigerant and ND-OIL8 refrigerant oil, which are not compatible with R-12 refrigerant 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.
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.
If accidental system discharge occurs, ventilate 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.
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.
Additional health and safety information 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.
The air conditioning system of this vehicle uses refrigerant HFC-134a (R-134a). None of refrigerant, compressor oil and component parts is interchangeable between two types of A/C system: one using refrigerant HFC-134a (R-134a) and the other using refrigerant CFC-12 (R-12). Be sure to check which refrigerant is used before any service work including inspection and maintenance. When replenishing or changing refrigerant and compressor oil and when replacing parts, make sure that the material or the part to be used is appropriate to the A/C system installed in the vehicle being serviced. Use of incorrect one will result in leakage of refrigerant, damage in parts or other faulty condition.
The refrigerant charge must be performed according to the procedure provided. Also, the check of refrigerant amount must be performed according to the procedure provided. Because, in the sub-cool system, the point at which bubbles disappear is in insufficient charged region, the amount of refrigerant will be insufficient if the refrigerant charge is stopped at the point at which bubbles disappear. Also, overcharge causes poor performance of the A/C system and poor fuel consumption.
Fig. Identifying charging levels
When refrigerant HFC-134a (R-134a) strike your eye(s), consult a doctor immediately.
Do not use your hand to rub affected eye(s). Instead, use quantities of fresh cold water to splash it over affected area to thus gradually raise its temperature above the freezing point.
Obtain proper treatment as soon as possible from a doctor or eye specialist. Should liquid refrigerant HFC-134a (R-134a) get on your skin, such affected part should be treated in the same manner as when skin is frostbitten or frozen.
Never use heat for bending pipes. When bending a pipe, try to make its bending radius as slight as possible.
Keep internal parts of air conditioning free from moisture and dirt. When disconnecting any line from system, install a blind plug or cap to the fitting immediately.
When connecting hoses and pipes, apply a few drops of compressor oil (refrigerant oil) to seats of coupling nuts and O-ring.
Never reuse O-rings. Always use new one.
When tightening or loosening a fitting, use two wrenches, one for turning and the other for support.
Tighten flared nut to 9.5 ft. lbs. (13 Nm) and bolt to 7.5 ft. lbs. (10 Nm).
Route drain hose so that drained water does not make any contact to vehicle components.
If pipes or hoses are replaced, replenish specified amount of compressor oil to compressor suction side.
Handling Refrigerant (R-134a)
Always wear goggles to protect your eyes.
Avoid you direct contact to liquid refrigerant.
Do not heat refrigerant container higher than 40 °C (104 °F).
Do not discharge refrigerant into atmosphere.
Do not allow liquid refrigerant to touch bright metals. Refrigerant combined with moisture is corrosive and will tarnish surfaces of bright metals including chrome.