Savana 3500 V8-4.8L (2009)
Expansion Block/Orifice Tube: Service and Repair
Expansion (Orifice) Tube Replacement
Expansion (Orifice) Tube Replacement
Special Tools
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J 26549-E Orifice Tube Remover and Installer
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J 39400-A Halogen Leak Detector
Removal Procedure
1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging (See: Service and Repair/Refrigerant Recovery and
Recharging).
2. Remove the evaporator hose retaining nut from the evaporator.
3. Use the J 26549-E in order to remove the expansion tube (1).
4. If the expansion tube is stuck perform the following:
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Remove as much of the impacted residue as possible.
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Carefully apply heat with a heat gun, or hair dryer 7 mm (0.25 in) from the dimples on the inlet pipe.
DO NOT overheat the pipe.
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While applying heat, use the J 26549-E in order to grip the expansion tube. Use a turning motion along with a push-pull motion to loosen the
impacted expansion tube and remove.
Installation Procedure
Note:
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Install the shorter screen end (3) first into the evaporator.
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Coat the O-ring seal (2) with 525 viscosity refrigerant oil.
1. Use the J 26549-E in order to install the expansion tube.
2. Install new sealing washers to the evaporator tube. Refer to Sealing Washer Replacement (See: Coupler HVAC/A/C Coupler O-ring/Service and
Repair/Sealing Washer Replacement).
3. Install the evaporator hose to the evaporator.
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
4. Install the evaporator hose retaining nut to the evaporator and tighten to16 Nm (12 lb ft).
5. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging (See: Service and Repair/Refrigerant Recovery and