C 3500 Truck 2WD V8-454 7.4L VIN J SFI (1999)
Expansion Valve: Service and Repair
THERMAL EXPANSION VALVE REPLACEMENT (AUXILIARY)-MANUAL HVAC
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
1. Disconnect the negative battery cable.
2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging See: Refrigerant/Service and Repair
3. Remove the evaporator core.
4. Complete the following steps in order to remove the TXV from the evaporator core:
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Remove the clip retaining the capillary tube to the suction pipe.
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Remove the TXV from the evaporator inlet pipe.
INSTALLATION PROCEDURE
1. Install the TXV to the evaporator core by completing the following steps:
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Install the TXV to the evaporator core inlet pipe.
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Install the capillary tube to the suction line.
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Install the capillary tube to the retaining clip.
2. Install the evaporator core.
3. Charge the system. Refer to Evaporator Core Replacement See: Evaporator Core/Service and Repair
4. Connect the negative battery cable.