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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 394 (HVAC SYSTEMS - GENERAL SERVICING)SERVICE EQUIPMENT
2004 Oldsmobile Bravada AWD

Service Equipment

2004 Oldsmobile Bravada AWDSECTION Service Equipment
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Because R-134a is not interchangeable with R-12, separate sets of hoses, gauges and recovery/recycling equipment are required to service vehicles. This is necessary to avoid cross-contamination and damaging system.

All equipment used to service systems using R-134a must meet SAE standard J2210. The service hoses on the manifold gauge set must have manual (turn wheel) or automatic back-flow valves at the service port connector ends. This will prevent refrigerant from being released into the atmosphere.

For identification purposes, R-134a service hoses must have a Black stripe along their length and be clearly labeled SAE J2196/134a. The low pressure test hose is Blue, with a Black stripe. The high-side test hose is Red, with a Black stripe. The center test hose is Yellow, or White, with a Black stripe.

NOTE: Refrigerant R-12 service hoses will only be labeled SAE J2196.

All R-134a manifold gauge sets can be identified by one or all of the following:

  • Labeled FOR USE WITH R-134a on set.
  • Labeled HFC-134 or R-134a on gauge face.
  • Light Blue color on gauge face. In addition, pressure/temperature scales on R-134a gauge sets are different from R-12 manifold gauge sets.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.