Subaru 2009 IMPREZA Service Manual page 2695

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• In order to prevent global warming, avoid releas-

ing HFC-134a into the atmosphere. Using a refrig-

erant recovery system, discharge and recycle the

(D) No direct heat on container

(E) Do not discharge

General Description

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

5. O-RING CONNECTIONS

• Always use a new O-ring.

• In order to keep the O-rings free of lint which will

cause a refrigerant gas leak, perform work without

using gloves or waste cloths.

• Apply compressor oil to O-rings to avoid sticking,

before installation.

• Use a torque wrench to tighten the O-ring fittings.

Over-tightening will result in damage of the O-ring

and deformation of the pipe end.

• If the work is interrupted before completing pipe

connections, recap the pipes, components and fit-

tings with a plug or tape to prevent foreign matter

from entering.

• Visually check the surfaces and mating surfaces

of O-rings, threads and connecting points. If a fail-

ure is found, replace the applicable parts.