3. Tools and Equipment
The following section provides information about
the tools and equipment that will be necessary to
properly service the A/C system.
Since equipment may vary slightly depending on
the manufacturer, it is important to always read and
follow the manufacturer?s instructions.
CAUTION:
When working on vehicles with the HFC-134a
system, only use HFC-134a specified tools and
parts. Do not mix with CFC-12 tools and parts.
If HFC-134a and CFC-12 refrigerant or com-
pressor oil is mixed, poor lubrication will result
and the compressor itself may be destroyed.
In order to help prevent mixing 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
Tools and Equipment Description
WRENCH
G4M0571
Various WRENCHES will be required to service any A/C system. A 7
to 40 Nm (0.7 to 4.1 kg-m, 5 to 30 ft-lb) torque wrench with various
crowfoot wrenches will be needed. Open end or flare nut wrenches
will be needed for back-up on the tube and hose fittings.
APPLICATOR BOTTLE
G4M0572
A small APPLICATOR BOTTLE is recommended to apply refrigerant
oil to the various parts. They can be obtained at a hardware or drug
store.
MANIFOLD GAUGE SET
G4M0573
A MANIFOLD GAUGE SET (with hoses) can be obtained from
either a commercial refrigeration supply house or from an auto shop
equipment supplier.
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4-7 [W300] SERVICE PROCEDURE
3. Tools and Equipment