O-Ring Connections
O-RING CONNECTIONSUse new O-rings.
In order to keep the O-rings free of lint which will cause a refrigerant gas leak, perform operations without gloves and shop towels.
Apply the compressor oil to the O-rings to avoid sticking, then install them.
Use a torque wrench to tighten the O-ring fittings: Over-tightening will damage the O-ring and tube end distortion.
If the operation is interrupted before completing a pipe connection, recap the tubes, components, and fittings with a plug or tape to prevent contamination from entering.
Visually check the surfaces and mating surfaces of O-rings, threads, and connecting points. If a failure is found, replace the applicable parts.
Install the O-rings at right angle to the tube beards.
Use the oil specified in the service specifications to lubricate the O-rings.
Apply the oil to the top and sides of the O-rings before installation.
Apply the oil to the area including the O-rings and tube beads.
When connecting hoses or pipes, use 2 wrenches (a torque wrench for tightening). While securing one side with a wrench, tighten the other side to the specified torque with a torque wrench. If only one wrench is used to tighten, the tightening torque will be excessive or insufficient. This may cause a pipe distortion or gas leak, resulting in damage to hoses and pipes.
After tightening, use a clean shop towel to remove excess oil from the connections and any oil which may have run on the vehicle body or other parts.
If any leakage is suspected after tightening, do not retighten the connections, Disconnect the connections, remove the O-rings, and check the O-rings, threads, and connections.