Heater-Evaporator Unit
Overhaul
1. Remove the heater core cover, remove the pipe clamp, then pull out the heater core.
2. Remove the lower half of the housing, then remove the evaporator.
3. Remove the expansion valve if necessary.
HEATER CORE PIPE CLAMP
AIR MIX DOOR
LOWER HALF
OF THE HOUSING
CAPILLARY TUBE
SUCTION LINE
*EVAPORATOR
The expansion valve capillary tube
must be touching the suction line.
New part for R-134a.
4. Assemble the heater-evaporator unit in the reverse order of disassembly. Hold the expansion valve capillary tube
down against the suction line, and wrap it with tape to hold it there.
EXPANSION VALVE
HEATER CORE
COVER
TAPE
SUCTION LINE
Overhaul
1. Remove the heater core cover, remove the pipe clamp, then pull out the heater core.
2. Remove the lower half of the housing, then remove the evaporator.
3. Remove the expansion valve if necessary.
HEATER CORE PIPE CLAMP
AIR MIX DOOR
LOWER HALF
OF THE HOUSING
CAPILLARY TUBE
SUCTION LINE
*EVAPORATOR
The expansion valve capillary tube
must be touching the suction line.
New part for R-134a.
4. Assemble the heater-evaporator unit in the reverse order of disassembly. Hold the expansion valve capillary tube
down against the suction line, and wrap it with tape to hold it there.
EXPANSION VALVE
HEATER CORE
COVER
TAPE
SUCTION LINE