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Home >> Pontiac >> 2001 >> Bonneville V6-3.8L SC VIN 1 >> Repair and Diagnosis >> Heating and Air Conditioning >> Expansion Block/Orifice Tube >> Service and Repair
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Expansion Block/Orifice Tube: Service and Repair

EXPANSION (ORIFICE) TUBE REPLACEMENT

TOOLS REQUIRED
J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE




1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging. Service and Repair
2. Remove the A/C evaporator hose from the retaining clips.




3. Loosen the condenser hose nut.
4. Separate the A/C hose at the expansion tube location.




5. Remove the expansion tube from the line.

INSTALLATION PROCEDURE

IMPORTANT: Lubricate the new expansion tube O-ring with mineral base 525 viscosity refrigerant oil before installing into the evaporator hose.




1. Install the new expansion tube. Ensure that the short screen and arrow face toward the evaporator.

NOTE: Refer to Fastener Notice in Service Precautions.




2. Connect the A/C evaporator tube to the condenser tube..

Tighten
Tighten the O-ring joint connections to 27 N.m (20 lb ft).




3. Install the A/C evaporator hose to the retaining clips.
4. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
5. Leak test the fittings of the component using the J 39400-A.
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