RAM 2500 Van V8-5.9L VIN Z LDC (2000)
Hose/Line HVAC: Service and Repair
A/C Suction Hose/Line Replacement
Suction Line Jumper Replacement
Any kinks or sharp bends in the refrigerant plumbing will reduce the capacity of the entire air conditioning system. Kinks and sharp bends reduce the
flow of refrigerant in the system. High pressures are produced in the refrigerant system when the air conditioning compressor is operating. Extreme care
must be exercised to make sure that each of the refrigerant system 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. Remove the low pressure cut-off switch from the fitting on the suction line jumper.
3. Recover the refrigerant from the refrigerant system.
Suction Line Jumper Remove/Install
4. Disconnect the flare nut on the suction line from the threaded fitting on the suction line jumper. Install plugs in, or tape over all of the opened
refrigerant line fittings.
5. If the vehicle is equipped with the optional rear heater-A/C unit, go to Step 6. If not, go to Step 8.
6. Disconnect the flare nut on the underbody plumbing suction line from the threaded fitting on the suction line jumper. Install plugs in, or tape over
all of the opened refrigerant line fittings.
7. Disconnect the flare nut on the underbody plumbing liquid line from the threaded fitting on the liquid line extension. Install plugs in, or tape over
all of the opened refrigerant line fittings.
8. Remove the screw that secures the filter-drier to its mounting bracket.
9. Remove the screw that secures the block fitting of the suction line jumper to the outlet of the filter-drier, and separate the fitting from the
filter-drier. Install plugs in, or tape over all of the opened refrigerant line fittings.
10. Remove the screw that secures the block fitting of the suction line jumper to the expansion valve, and separate the fitting from the expansion valve.
Install plugs in, or tape over all of the opened refrigerant line fittings.
11. Remove the suction line jumper from the engine compartment.
INSTALLATION
1. Remove the tape or plugs from the block fitting on the suction line jumper and the expansion valve. Position the suction line jumper block fitting
