Acura 3.5 RL Manual page 1037

Overhaul
NOTE: The blower motor and the recirculation control
motor can be replaced without removing the evapora-
tor/blower unit.
1. Remove the filter lid and the dust and pollen filter
assemblies, then remove the bolts and the recircu-
lation housing. If necessary, remove the self-tap-
ping screws and the recirculation control motor.
2. If necessary, remove the self-tapping screws, the
blower motor, the self-tapping screws and the power
transistor.
3. Pull out the evaporator temperature sensor. Remove
the self-tapping screws, then carefully separate the
housings. Remove the evaporator.
4. If necessary, remove the expansion valve and the
evaporator lines.
NOTE: When loosening the nuts of the expansion
valve, use a second wrench to hold the expansion
valve. Otherwise, they can be damaged.
RECIRCULATION
CONTROL MOTOR
Test, page
FILTER LID
UPPER HOUSING
EVAPORATOR
Blow dirt out of fins
with compressed air.
97.4 mm (3.83 in)
Core center
32.7 mm (1.29 in)
EVAPORATOR
TEMPERATURE
SENSOR
Test, page 22-63
LOWER HOUSING
EXPANSION VALVE
22-59
POWER TRANSISTOR
Test, page 22-63
Assemble in the reverse order of disassembly. Make
5.
note of following items.
Replace the O-rings with new ones at each fitting
and apply a thin coat of refrigerant oil before
installing them.
NOTE: Be sure to use the right O-rings for HFC-
134a (R-134a) to avoid leakage.
Install the expansion valve capillary tube with
the capillary tube in contact with the outlet line
directly, and wrap it with tape.
NOTE: Make sure there is no foreign matter stuck
between the capillary tube and the outlet line.
Reinstall the evaporator temperature sensor to
its original location.
When removing recirculation control motor, make
sure that the recirculation control doors and link-
age move smoothly without binding.
After reassembly, make sure the recirculation
control motor runs smoothly (see page 22-59).
Make sure that there is no air leakage.
RECIRCULATION
HOUSING
DUST AND POLLEN FILTER ASSEMBLIES
GROMMET
CAPILLARY TUBE
BLOWER MOTOR
EVAPORATOR LINES
TAPES (Replace)