O-Ring And Refrigerant Connection
WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Former Type Refrigerant Connection, Type Refrigerant Connection And One Touch Joint
CAUTION:
The new and former refrigerant connections use different O-ring configurations. Never confuse O-rings since they are not interchangeable. Refrigerant may leak at the connection if a wrong O-ring is installed.
O-RING PART NUMBERS AND SPECIFICATIONS
| Connection type | Piping connection point | Part number | QTY | O-ring size | |
|---|---|---|---|---|---|
| One-touch joint | Low-pressure pipe 1 to low-pressure pipe 2 | 92473 N8221 | 2 | 16 | |
| Low-pressure flexible hose to low-pressure pipe 2 | 92473 N8221 | 2 | 16 | ||
| High-pressure pipe 1 to high-pressure pipe 2 | 92471 N8221 | 2 | 8 | ||
| Condenser pipe assembly to high-pressure flexible hose | 92472 N8221 | 2 | 12 | ||
| Condenser pipe assembly to high-pressure pipe 1 | 92471 N8221 | 2 | 8 | ||
| New | Condenser to condenser pipe assembly | Inlet | 92472 N8210 | 1 | 12 |
| Outlet | 92471 N8210 | 1 | 8 | ||
| Low-pressure pipe 1 to expansion valve | 92473 N8210 | 1 | 16 | ||
| High-pressure pipe 2 to expansion valve | 92471 N8210 | 1 | 8 | ||
| Low-pressure flexible hose to low-pressure pipe 3 | 92474 N8210 | 1 | 19 | ||
| Compressor to low-pressure pipe 3 | 92474 N8210 | 1 | 19 | ||
| Compressor to high-pressure flexible hose | 92472 N8210 | 1 | 12 | ||
| Liquid tank to Condenser | Inlet | 92471 N8210 | 1 | 8 | |
| Outlet | 1 | ||||
| Former | Refrigerant pressure sensor to liquid tank | J2476 89956 | 1 | 10 | |
| Expansion valve to evaporator | Inlet | 92475 71L00 | 1 | 12 | |
| Outlet | 92475 72L00 | 1 | 16 | ||
WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it.
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
- Store it in the same way at it is when mounted on the car when the compressor is removed. Failure to do so will cause lubricant to enter the low-pressure chamber.
- Use always a torque wrench and a back-up wrench when connecting tubes.
- Plug immediately all openings to prevent entry of dust and moisture after disconnecting tubes.
- Connect the pipes at the final stage of the operation when installing an air conditioner in the vehicle. Never remove the seal caps of pipes and other components until just before required for connection.
- Allow components stored in cool areas to warm to working area temperature before removing seal caps. This prevents condensation from forming inside A/C components.
- Remove thoroughly moisture from the refrigeration system before charging the refrigerant.
- Replace always used O-rings.
- Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to apply lubricant to threaded portion.
Name: A/C System Oil Type S
- O-ring must be closely attached to the groove portion of tube.
- Be careful not to damage O-ring and tube when replacing the O-ring.
- Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is installed to tube correctly.
- Perform leakage test and make sure that there is no leakage from connections after connecting line. Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten connections of seal seat to the specified torque.