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HVAC System (Heater, Ventilator and A/C)
5. O-RING CONNECTIONS
¼ Use new O-rings.
¼ In order to keep the O-rings free of lint which will
cause a refrigerant gas leak, perform operations
without gloves and shop towels.
¼ Apply the compressor oil to the O-rings to avoid
sticking, then install them.
¼ Use a torque wrench to tighten the O-ring fit-
tings: Over-tightening will damage the O-ring and
tube end distortion.
¼ If the operation is interrupted before completing
a pipe connection, recap the tubes, components,
and fittings with a plug or tape to prevent contami-
nation from entering.
¼ Visually check the surfaces and mating surfaces
of O-rings, threads, and connecting points. If a fail-
ure is found, replace the applicable parts.
¼ Install the O-rings at right angle to the tube
beards.
GENERAL DESCRIPTION
S701001A0305
G4M0581
G4M0582
AC-14
¼ Use the oil specified in the service manual 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.
¼ 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 tighten-
ing torque will be excessive or insufficient. This
may cause a pipe distortion or gas leak, resulting
in damage to hoses and pipes.
¼ After tightening, using 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.
¼ 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.
G4M0583
G4M0584
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