RAM 2500 Van V8-5.9L VIN Z LDC (2000)
2. Remove the tape or plugs from the refrigerant line fittings on the suction line and the suction line jumper. Connect the flare nut on the suction line
to the threaded fitting on the suction line jumper. Tighten the fitting to 47 Nm (420 in. lbs.).
3. Remove the tape or plugs from the discharge line block fitting and the inlet of the condenser. Connect the liquid line to the condenser inlet and
secure the connection with a screw. Tighten the mounting screw to 22 Nm (200 in. lbs.).
4. Reinstall the radiator grille to the vehicle.
5. Plug in the wire harness connector to the high pressure cut-off switch.
6. Connect the battery negative cable.
7. Evacuate the refrigerant system.
8. Charge the refrigerant system.
Underbody Plumbing Replacement
The underbody plumbing lines are used only on models with the optional rear heater-A/C unit. While the underbody suction line, liquid line, and
combination heater line are available for separate service replacement, all lines must be removed from the vehicle as a unit for service.
Any kinks or sharp bends in the underbody plumbing will reduce the capacity of the entire heating and air conditioning system. Kinks and sharp bends
reduce the system flow. High pressures are produced in the refrigerant system when the air conditioning compressor is operating. High temperature
coolant is present in the heater plumbing when the engine is operating. Extreme care must be exercised to make sure that each of the plumbing
connections is pressure-tight and leak free.
WARNING: REVIEW THE WARNINGS AND CAUTIONS BEFORE PERFORMING THE FOLLOWING OPERATION.
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Recover the refrigerant from the refrigerant system.
3. Drain the engine cooling system.
4. From the engine compartment, disconnect the underbody liquid line at the liquid line extension and the underbody suction line at the suction line
jumper. Install plugs in, or tape over all of the opened refrigerant line fittings.
5. From the engine compartment, disconnect the heater supply and return hoses from the underbody combination heater line.
6. Remove the engine cover from the passenger compartment.
7. Raise and support the vehicle.
8. Disengage the front park brake release cable routing clip from the underbody suction line.
Rear Heater-A/C Plumbing Connections Remove/Install
9. From under the vehicle, disconnect the flare nut on the underbody liquid line from the threaded fitting on the rear heater-A/C unit liquid line.
Install plugs in, or tape over all of the opened refrigerant line fittings.
10. From under the vehicle, disconnect the flare nut on the underbody suction line from the threaded fitting on the rear heater-A/C unit suction line.
Install plugs in, or tape over all of the opened refrigerant line fittings.
11. From under the vehicle, disconnect the heater supply and return hoses from the rear heater-A/C unit heater lines.
