K 3500 Truck 4WD V8-6.5L DSL Turbo VIN S (1999)
Expansion Block/Orifice Tube: Service and Repair
Expansion (Orifice) Tube Replacement - RPO C69
REMOVAL PROCEDURE
TOOLS REQUIRED
J 26549-E Orifice Tube Remover and Installer
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging See: Refrigerant/Service and Repair
2. Remove the air cleaner assembly, if necessary.
3. Disconnect the evaporator tube (4) connection near the junction block (6).
4. Remove the O-ring seal (4).
5. Cap or plug the open line.
6. Use the J 26549-E in order to remove the orifice tube (1) from the evaporator tube.
INSTALLATION PROCEDURE
1. Use the J 26549-E in order to install the orifice tube (1) into the evaporator tube (3).
2. Coat the new O-ring seal (4) with 525 viscosity refrigeration oil.
3. Install the new O-ring seal.
NOTE: Refer to Fastener Notice in Cautions and Notices.
4. Connect the evaporator tube connection (6).
Tighten
Tighten the tube connection to 24 N.m (18 lb ft).
5. Charge the system. Refer to Refrigerant Recovery and Recharging See: Refrigerant/Service and Repair
6. Inspect the system for leaks. Refer to Leak Testing. See: Testing and Inspection
