K 2500 Truck 4WD V8-6.5L DSL Turbo VIN S (1998)
Expansion Block/Orifice Tube: Service and Repair
Auxiliary A/C System
Tool Required:
J 26549-E Orifice Tube Remover and Installer or Equivalent
Remove or Disconnect
1. Recover refrigerant.
2. The evaporator tube connection near the junction block. It may be necessary to remove the air cleaner assembly on some models.
3. The O-ring seal.
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Cap or plug the open line.
4. Orifice tube from evaporator tube using J 26549-E or equivalent.
Install or Connect
1. Orifice tube into evaporator tube using J 26549-E or equivalent.
2. New O-ring seal.
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Coat new O-ring seal with 525 viscosity refrigeration oil.
3. Evaporator tube connection.
Tighten
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Tube connection to 24 N.m (18 Lb ft).
4. Charge system.
5. Check system for leaks.
