HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > General Description
PREPARATION TOOL
1. SPECIAL TOOL
ILLUSTRATION | TOOL NUMBER | DESCRIPTION | REMARKS |
—
SUBARU SELECT MONITOR 4
Used for setting of each function and troubleshooting for electrical system.
NOTE:
For detailed operation procedures of Subaru Select Monitor 4, refer to “Application help”.
2. GENERAL 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 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 type of tool and screw, and the replacement 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 and screw type | Millimeter size | Inch size |
Valve type | Quick joint type | Screw-in type |
TOOL NAME/ILLUSTRATION | REMARKS |
Circuit tester | Used for measuring resistance, voltage and current. |
DST-i | Used together with Subaru Select Monitor 4. |
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 affix the pipe 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 store.
Manifold gauge set
A MANIFOLD GAUGE SET (with hoses) is available at either a refrigerant supplier or an automotive equipment supplier.
Refrigerant recovery system
A REFRIGERANT RECOVERY SYSTEM is used for the recovery and recycling 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 into the system again. A syringe can be available at a pharmacy or drug store.
Vacuum pump
A VACUUM PUMP is necessary (for a good working condition), and may be available at either a refrigerant supplier or an automotive equipment supplier.
Can tap
A CAN TAP for the 397 g (14 oz) can is available at an automotive equipment supplier.
Thermometer/hygrometer
A Pocket THERMOMETER/HYGROMETER is available at either a industrial hardware store or a refrigerant supplier.
Electronic leak detector
An ELECTRONIC LEAK DETECTOR can be available at either a specialty tool supplier 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.
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