K 1500 Truck 4WD V8-5.3L VIN T (2000)
Refrigerant: Vehicle Damage Warnings
Handling Refrigerant R-134a
CAUTION: Refer to Breathing R-134a Caution in Service Precautions.
IMPORTANT:
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Do not mix R-12 refrigerant and R-134a refrigerant, even in the smallest amounts. R12 and R-134a are incompatible with each other. If the
refrigerants are mixed, compressor failure is likely to occur.
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Use only the specified lubricant (PAG) for the R-134a A/C system and R-134a components. If you use lubricants other than those specified,
compressor failure is likely to occur. Coat all the fittings and the O-ring seals with clean 525 viscosity refrigerant oil in order to provide a
leak-proof seal and in order to aid in assembly and disassembly.
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Do not store or heat the refrigerant containers above 52°C (125°F).
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Do not heat a refrigerant container with an open flame. Place the bottom of the container in a pail of warm water If the container must be warmed.
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Do not intentionally do the following to the refrigerant containers:
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Drop
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Puncture
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Incinerate
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Refrigerant will displace oxygen. Work in well ventilated areas in order to prevent suffocation.
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Do not introduce compressed air to any refrigerant container or refrigerant component. Contamination will occur.
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If you must carry a container of Dot CFR Refrigerant-134a in a vehicle, do not carry the refrigerant in the passenger compartment.
All of the Refrigerant-134a disposable, blue containers are shipped with a heavy metal screw cap in order to protect the valve and the safety plug of the
container from damage. Replace the cap after each use of the container in order to continue the protection.
Maintaining Chemical Stability
MAINTAINING CHEMICAL STABILITY
The chemical stability of the refrigeration system plays an important role in the efficient operation and longevity of the A/C system.
When air, moisture or particulate contamination are introduced into the refrigeration system, the following results will occur:
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The chemical stability of R-134a and Polyalkylene Glycol (PAG) synthetic lubricant will change.
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The pressure/temperature symmetry will change.
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The A/C system efficiency will be diminished.
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Internal A/C system parts may corrode and/or wear in an abnormal manner.
Use the following general practices to maintain chemical stability in the refrigeration system:
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Wipe away dirt and/or oil before you break a refrigerant connection. This will reduce the possibility of particulate contamination.
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Cap, plug or tape both sides of an open connection as soon as possible. This will minimize the amount of dirt and moisture entering the system.
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Ensure that the following remain clean and dry:
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The tools being used for the repair
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The surrounding area of the repair
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The hoses and connectors for the ACR4 machine or manifold gage set
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The replacement parts
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When adding polyalkylene glycol (PAG) lubricant, ensure the transfer device and the container remain clean and dry to minimize moisture
intrusion.
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Do not leave the A/C system open any longer than necessary.
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Before recharging an A/C system that has been opened, properly evacuate and vacuum test the system.
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Service parts are dehydrated and sealed prior to shipping. Retain the parts in their sealed packages until you are ready to use them.
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Ensure the parts are at room temperature before opening the packages. This prevents condensation on the parts from humidity in the atmosphere.
Attach the A/C service equipment quick-connects as soon as possible after removing the service caps.
