The expansion (orifice) tube is located at the condenser
to evaporator tube connection in the evaporator tube.
Important: In past production vehicles, the orifice tubes with following characteristics
may have been used:
When you replace an orifice tube, compare the design of the orifice
tube to the design of the replacement part for the correct selection. The
different styles of orifice tubes are not interchangeable.
Removal Procedure
Tools Required
| ā¢ | J 39500-B R-134a
Refrigerant Recovery, Recycling and Recharging (ACR4) System |
- Use the J 39500-B
in order to recover the refrigerant. Refer to
Refrigerant Recovery and Recharging
.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Disconnect the connection at the condenser .
Discard the O-ring seals.
- Remove the evaporator tube from the condenser.
Important: Use care when removing the expansion tube .
- Use a J 26549-E
or
needle-nose pliers in order to remove the expansion tube.
Use the following procedure in order to remove a restricted or plugged
expansion (orifice) tube:
| 5.1. | Remove as much of any impacted residue as possible. |
| 5.2. | Use a heat gun in order to apply heat to the expansion (orifice)
tube . Apply the heat approximately 7 mm (0.25 in) from
the dimples on the inlet pipe. |
| 5.3. | While applying heat, use a J 26549-E
in order to grip the expansion tube . |
| 5.4. | In order to loosen and remove the impacted expansion tube, using
the following motions: |
Installation Procedure
- Install the new expansion tube .
- Install the evaporator tube to the condenser.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
Important: Use new O-ring seals.
- Assemble the evaporator tube/condenser connection.
Tighten
Tighten the bolt to 25 NĀ·m (18 lb ft).
- Lower the vehicle.
- Use the J 39500-B
in order to evacuate and recharge the A/C system. Refer to
Refrigerant Recovery and Recharging
.
