Subaru 2009 IMPREZA, Service Manual

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AC-17
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
D: PREPARATION TOOL
CAUTION:
When working on vehicles with a HFC-134a system, only use HFC-134a specified tools and parts. Do
not mix CFC-12 tools and parts. If HFC-134a and CFC-12 refrigerant or compressor oil is mixed, it will
result in poor lubrication and the compressor itself may be damaged.
In order to prevent the mixture of HFC-134a and CFC-12 parts and liquid, the tool and screw type and
the type of service valves used are different. The gas leak detectors for the HFC-134a and CFC-12
systems must also not be interchanged.
HFC-134a CFC-12
Tool & screw type Millimeter size Inch size
Valve type Quick joint type Screw-in type
ILLUSTRATION Tools and Equipment
Wrench
Various WRENCHES will be required to service any A/C system.
7 — 40 N·m (0.7 to 4.1 kgf-m, 5 to 30 ft-lb) torque wrench and various
crowfoot wrenches will be needed. Open end or flare nut wrenches will
be needed to hold the tube and hose fittings.
Applicator bottle
A small APPLICATOR BOTTLE is recommended to apply compressor
oil to the various parts. It can be available at a hardware or drug store.
Manifold gauge set
A MANIFOLD GAUGE SET (with hoses) is available at either a refrig-
erant supplier or an automotive equipment supplier.
AC-00213
AC-00012
AC-00013