RAM 1500 Van V8-5.2L VIN Y (1999)
Housing Assembly HVAC: Service and Repair
Rear Heater-A/C Unit Replacement and Service
REAR HEATER - A/C UNIT
WARNING: REVIEW THE WARNINGS AND CAUTIONS PERFORMING THE FOLLOWING OPERATION.
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Disconnect the underbody plumbing at the rear heater-A/C unit plumbing connections. Refer to: "Hose/Line HVAC : Service and Repair :
Underbody Refrigerant Line Replacement" See: Hose/Line HVAC/Service and Repair/Underbody Refrigerant Line Replacement
Install plugs in, or tape over all of the opened plumbing fittings.
Rear Heat-A/C Unit Plumbing Plate Remove/Install
3. Remove the three nuts that secure the rear heater-A/C unit plumbing plate studs to the underbody panel.
Rear Heat-A/C Unit Remove/Install
4. Remove the one screw that secures the rear heater-A/C unit to the underbody panel from underneath.
5. Lower the vehicle and remove the cover from the rear heater-A/C unit. Refer to: "Heating and Air Conditioning : Service and Repair : Rear
Heater-A/C Cover Replacement" See: Rear Heater-A/C Unit Cover Removal and Installation
6. Remove the vertical duct from the rear heater- A/C unit. Refer to: "Air Duct : Service and Repair : Vertical Duct Replacement" See: Air
Duct/Service and Repair/Vertical Duct Replacement
