Denso First Time Fit Manual De Instrucciones página 2

Expansion Valve Removal
The information below explains necessary procedures and tools to remove and install BLOCK
type expansion valves.
NOTE: For more detailed instructions please refer to the vehicle manufacturer's service
manual.
1. Identify the type of refrigerant before working on the vehicle.
2. Using a certified refrigerant recovery machine, reclaim the refrigerant in accordance with
any federal, state or local regulations from the A/C system.
3. Remove the cooling unit following the vehicle manufacturer's recommended procedures.
D CAUTION: When handling the cooling unit
and it's components, be careful not to deform
the cooling fins or piping. Be sure to note all
wiring harness and harness clip locations for
reassembly. Do not disturb the location of the
thermistor. If the thermistor is removed from
the evaporator core, it must be reinserted in
exactly the same location for the cooling unit
to operate optimally.
4. Separate the cooling unit's case and
remove the evaporator assembly following
the vehicle manufacturer's recommended
procedures.
D CAUTION: Carefully slice the foam packing of the evaporator case along the mating joint of
the evaporator case halves where it will be separated.
NOTE: To remove the clips holding the evaporator case halves together, insert a flat blade
screwdriver into the hooked end of the clip. Gently pull the clip away from its seat and remove.
5. Loosen and remove the fasteners securing the tube assembly and expansion valve to the
evaporator.
6. Remove the tube assembly and expansion valve from the evaporator.
Expansion Valve Installation
NOTE: For more detailed instructions please refer to the vehicle manufacturer's service
manual.
1. Using the proper refrigerant oil, lubricate and install the new piping O-rings and or seals
onto the tube assembly and the evaporator. Refer to the vehicle manufacturer's service
manual or service bulletins for proper refrigerant oil.
2. Temporarily install the expansion valve onto the evaporator.
3. Temporarily install the tube assembly onto the expansion valve.
4. Temporarily install the original fasteners securing the tube assembly and expansion valve to
the evaporator, checking for proper alignment.
5. Tighten and torque the fasteners. Refer to the vehicle manufacturer's service manual for
proper torque.
6. Assemble the cooling unit to the original configuration following the vehicle manufacturer's
recommended procedures.
7. Reinstall the cooling unit to the original configuration following the vehicle manufacturer's
recommended procedures.
8. Evacuate and recharge A/C system.
2
COOLING UNIT
CLIPS
DRAIN
HOSE
CUT
THERMISTOR
FOAM PACKING