Honda Retrofit Procedures
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See Acura's (Honda's) Service Bulletin 95-008
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Special Notes:
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All retrofit procedures must follow SAE guidelines.
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Honda has retrofit kits.
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My recommendations are in line with the aftermarket recommendations. Aftermarket
recommendations are those of companies such as Everco, Four Seasons and
Murray.
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Recommendations From A/C Shops:
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Vehicles with POA valves may require adjustment.
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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.
Make sure on all vehicles:
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The condenser has clean fins and good air flow.
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There are seals around the condenser to improve the air flow through it.
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The fan clutch or the coolant fan motor is operating properly.
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That any air dams etc. are not missing.
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MINERAL OIL REMOVAL
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None Recommended
We recommend that you remove as much oil as possible! I flush when
I retrofit!
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FLUSHING THE SYSTEM
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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.
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O-RINGS & GASKETS
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All o-rings and gaskets replaced should be R134a compatible. We recommend
that you cover all o-rings and fittings with mineral oil.
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HOSE REPLACEMENT
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Honda does not recommend the replacement of hoses unless they show signs
of leaking.
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COMPRESSOR
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The compressor is not part of the normal retrofit. When you do change a
compressor make sure you know what type oil it contains.
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CONDENSER AND AIR FLOW (HEAT EXCHANGE)
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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.
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FILTER DRIER / ACCUMULATOR REPLACEMENT
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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.
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EXPANSION VALVE
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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.
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EVAPORATOR
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The evaporator is not part of the normal retrofit.
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HIGH PRESSURE RELIEF VALVE (HPRV)
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No recommendations.
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HIGH PRESSURE CUTOUT (HPCO) SWITCH
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No recommendations. We think a high pressure cut out switch is a worth
while safeguard.
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OTHER PARTS
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No recommendations.
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OIL REPLACEMENT
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Refill the system with a full charge of the proper PAG oil. We recommend
that you use Ester oil if you flush.
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SERVICE PORT ADAPTERS
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Special R134a only service ports that meet SAE requirements are required
by law.
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REFRIGERANT REPLACEMENT FOR R12
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Recharge the system with about 15% less R134a than the R12 specification.
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LABELS
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Special R134a service labels that meet SAE requirements are required by
law.
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