On-Vehicle Service

ON-VEHICLE SERVICE

NOTE: When servicing air conditioning system, the following rules must be observed.

WIRING:
1) Disconnect battery negative terminal to prevent any short circuit.
2) Connect wire connectors securely.
3) When routing a wire harness through a panel hole, previously insert a rubber bushing into the hole for its protection.
4) Use a vinyl tape or original clamps to connect air conditioner wire harness to main wire harness.
5) If original harness has been disconnected or removed while servicing, return it to a proper position.
6) During their installation,be careful not to pinch original clamps and A/C wire harness.
7) When adding lead wires to wire harness by soldering,use those lead wires which share the same diameter and tape each connection.
8) Keep wire harness away from any components moving or subjected to high temperature.
9) Keep connecting portions away from fuel lines.
10) Make sure that wire harness makes no contact to a sharp edge or corner.

REFRIGERANT LINES:
1) Never use heat for bending pipes. When bending a pipe, try to make a bend as slight as possible.
2) Keep internal parts of A/C free from moisture and dust.
When disconnecting any line from system, install a blind plug or cap to fitting of such line immediately.
3) When connecting hoses and pipes to each other respectively, previously apply a few drops of refrigerating oil to seats of coupling nuts and 0-ring.
4) When tightening or loosening a fitting,use two wrenches,one for turn and the other for support.
5) Reciver/dryer inlet fitting must be connected to the pipe from condenser outlet fitting.
6) Tighten flared nuts according to following specifications of Tightening Torque.

Tightening Torque for coupling nut
8 mm pipe : 12-15 N-m
(1.2-1.5kg-m,8.6-11.0 lb-ft)
1/2 inch pipe: 20-25 N-m
(2.0-2.5 kg-m,14.5-18.0 lb-ft)
5/8 inch pipe: 30-35 N-m
(3.0-3.5 kg-m.22.0-25.3 lb-ft)

7) Route drain hose so that drained water does not make any contact to vehicle components.

REFRIGERANT RECOVERY:
When discharging refrigerant out of A/C system,always recover it by using refrigerant recovery and recycling equipment.Discharging refrigerant HFC-134a (R-134a) into atmosphere would cause adverse effect to environments.

NOTE: When handling recovery and recycling equipment, be sure to follow the instruction manual for the equipment.

HANDLING REFRIGERANT:
1) When handling refrigerant,alway wear goggles to protect your eyes.
2) Avoid you direct contact to liquid refrigerant.
3) Do not heat refrigerant container higher than 40°C (100°F).
4) Do not discharge refrigerant into atmosphere.
5) Do not allow liquid refrigerant to touch bright metals.
Refrigerant combined with moisture is corrosive and will tarnish surfaces of bright metals including chrome.
6) After recovering refrigerant from system,the amount of compressor oil removed must be measured and the same amount added to the system.

WARNING: Should Refrigerant HFC-134a (R-134a) strike your eye(s), consult a doctor immediately.
- DO NOT USE YOUR HAND TO RUB AFFECTED EYE(S). Instead, use quantities of fresh cold water to splash it over affected area to thus gradually raise its temperature above the freezing point.
- Obtain proper treatment as soon as possible from a doctor or eye specialist. Should liquid HFC-134a (R-134a) get on your skin, such affected part should be treated in the same manner as when skin is frostbitten or frozen.