Honda Retrofit Procedures

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See Acura's (Honda's) Service Bulletin 95-008
Special Notes:
  1. All retrofit procedures must follow SAE guidelines.
  2. Honda has retrofit kits.
My recommendations are in line with the aftermarket recommendations. Aftermarket recommendations are those of companies such as Everco, Four Seasons and Murray.
Recommendations From A/C Shops:
Vehicles with POA valves may require adjustment.
Vehicles with dual evaporators may not have a large enough condenser for use with R134a, and may present problems.

You should stay away from retrofitting Nissan vans if possible.
MINERAL OIL REMOVAL
None Recommended

We recommend that you remove as much oil as possible! I flush when I retrofit!
FLUSHING THE SYSTEM
Flushing of the A/C system is not recommended or approved by Honda. We recommend flushing all parts that are practical, see general retrofit procedures.
O-RINGS & GASKETS
All o-rings and gaskets replaced should be R134a compatible. We recommend that you cover all o-rings and fittings with mineral oil.
HOSE REPLACEMENT
Honda does not recommend the replacement of hoses unless they show signs of leaking.
COMPRESSOR
The compressor is not part of the normal retrofit. When you do change a compressor make sure you know what type oil it contains.
CONDENSER AND AIR FLOW (HEAT EXCHANGE)
Honda does not make recommendations of condenser replacement. We see potential problems and needs in this area, see general retrofit procedures. When you do replace the condenser, try to use a improve multiflow model.
FILTER DRIER / ACCUMULATOR REPLACEMENT
Honda does not make recommendations of drier/accumulator. replacement. Honda recommends the replacement of the drier with one that contains XH-7 or XH-9 desiccant.
EXPANSION VALVE
The expansion valve is not part of the normal retrofit. Some shops I have talked to install new expansion valves when they retrofit a dual evaporator systems.
EVAPORATOR
The evaporator is not part of the normal retrofit.
HIGH PRESSURE RELIEF VALVE (HPRV)
No recommendations.
HIGH PRESSURE CUTOUT (HPCO) SWITCH
No recommendations. We think a high pressure cut out switch is a worth while safeguard.
OTHER PARTS
No recommendations.
OIL REPLACEMENT
Refill the system with a full charge of the proper PAG oil. We recommend that you use Ester oil if you flush.
SERVICE PORT ADAPTERS
Special R134a only service ports that meet SAE requirements are required by law.
REFRIGERANT REPLACEMENT FOR R12
Recharge the system with about 15% less R134a than the R12 specification.
LABELS
Special R134a service labels that meet SAE requirements are required by law.
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