ORIFICE TUBE REPLACEMENT
Note. Orifice tube is located in end of liquid line closest to component listed in ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION table.
Removal
- Locate orifice tube. See ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION table. Discharge refrigerant from system, and disconnect liquid line at evaporator inlet. Remove orifice disconnect liquid line at evaporator or condenser.
- Remove orifice tube using needle-nose pliers or orifice tube remover. See ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION table.
- If difficulty is encountered during removal of a plugged or restricted orifice tube, remove as much residue as possible. Using a heat gun, carefully heat inlet pipe. If inlet pipe has small dimples, apply heat1/4" from dimples. Be careful not to overheat pipe. NOTE: If system has a pressure switch near orifice tube location, remove switch before heating inlet pipe to avoid damaging switch.
- While heat is being applied, install orifice tube extractor. Use a turning motion along with a push or pull motion to loosen and remove orifice tube.
| Application | Orifice Tube Location | Remover/Installer |
|---|
| Cars (1) |
| "A" Body | Condenser | J-26549-C |
| "B" Body | Condenser | J-26549-E |
| "C" & "D" Bodies | Evaporator | J-26549-D |
| "E" & "F" Bodies | Evaporator | J-26549-D |
| "H" Body | Condenser | (2) J-26549-D |
| "J" Body | Condenser | J-26549-89 |
| "K" Body | Evaporator | J-26549-D |
| "W" Body | Condenser | J-26549-E |
| "Y" Body | Condenser | J-26549-D |
| Trucks & Vans (3) |
| "C" & "G" Series | Evaporator | (4) |
| "K", "L" & "M" Series | Evaporator | (4) |
| "P" & "R" Series | Evaporator | (4) |
| "S" & "T" Series | Evaporator | J-26549-D |
| "U" Series | Evaporator | J-26549-E |
| "V" Series | Evaporator | (4) |
| (1) Body code is determined by fourth character of VIN code. See COMPRESSOR APPLICATIONS & BODY DESIGNATIONS at the end of this article. (2) Use Dual "O" Ring Joint Separator (J-38042) to hold line nut while removing fitting. (3) Series code is determined by fifth character of VIN code. See COMPRESSOR APPLICATIONS & BODY DESIGNATIONS at the end of this article. (4) Information is not available. |
| (1) | Body code is determined by fourth character of VIN code. See COMPRESSOR APPLICATIONS & BODY DESIGNATIONS at the end of this article. |
| (2) | Use Dual "O" Ring Joint Separator (J-38042) to hold line nut while removing fitting. |
| (3) | Series code is determined by fifth character of VIN code. See COMPRESSOR APPLICATIONS & BODY DESIGNATIONS at the end of this article. |
| (4) | Information is not available. |
ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION
Installation
- To install orifice tube, coat inside of inlet pipe with refrigerant oil. Lubricate new orifice tube and "O" ring with refrigerant oil and insert them into inlet pipe.
- Install orifice tube with shorter screen end first. To complete installation, reverse removal procedure. Recharge and test system for proper operation.
