S10/T10 Blazer 4WD V6-262 4.3L (1989)
Hose/Line HVAC: Service Precautions
Handling of Refrigerant Lines and Fittings
Pipe and Hose Connections Torque
Seal Material and Size Chart
HANDLING OF REFRIGERANT LINES AND FITTINGS
Tighten tubing connections to the specified torque (see accompanying figures). Insufficient or excessive torque causes loose joints or deformed joint
parts. Either condition can cause refrigerant leakage.
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All metal tubing lines should be free of dents or kinks to prevent loss of system capacity due to line restriction.
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Never bend a flexible hose line to a radius of less than 4 times the diameter of the hose.
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Never place a flexible hose line closer than 65 mm (2 1/5-inch) to the exhaust manifold.
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Inspect flexible hose lines regularly for leaks or brittleness, and replace if necessary.
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When disconnecting any fitting in the refrigeration system discharge the system. However proceed with caution. Open slowly. Keep face
and hands away to prevent injury if there is liquid Refrigerant-12 in the line. Allow any pressure to bleed off as described under
"Discharging, Evacuating, Adding Oil and Charging Procedures."
