PREPARATION TOOL

/ 9-2X (9346) / 2005 / 8. Body / HVAC SYSTEM (HEATER, VENTILATOR AND A/C) / General Description / Special tools / PREPARATION TOOL

PREPARATION TOOL

Important
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 compressor 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

Description	Tools and Equipment
	Wrench
	Various WRENCHES will be required to service any A/C system. A 7 to 40 Nm (0.7 to 4.1 kgf-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
	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
	A MANIFOLD GAUGE SET (with hoses) can be obtained from either a commercial refrigeration supply house or from an auto shop equipment supplier.
	Refrigerant recovery system
	A REFRIGERANT RECOVERY SYSTEM is used for the recovery and reuse of A/C system refrigerant after contaminants and moisture have been removed from the refrigerant.
	Syringe
	A graduated plastic SYRINGE will be needed to add oil back into the system. The syringe can be found at a pharmacy or drug store.
	Vacuum pump
	A VACUUM PUMP (in good working condition) is necessary, and may be obtained from either a commercial refrigeration supply house or an automotive equipment supplier.
	Can tap
	A CAN TAP for the 397 g (14 oz) can is available from an auto supply store.
	Thermometer
	Pocket THERMOMETERS are available from either industrial hardware store or commercial refrigeration supply houses.
	Electronic leak detector
	An ELECTRONIC LEAK DETECTOR can be obtained from either a specialty tool supply or an A/C equipment supplier.
	Weight scale
	A WEIGHT SCALE such as an electronic charging scale or a bathroom scale with digital display will be needed if a 13.6 kg (30 lb) refrigerant container is used.