5. |
Install in the reverse order of removal.
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When installing a new heater core, add refrigerant oil
(PAG OIL).
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Replace the O-rings with new ones at each fitting, and
apply a thin coat of refrigerant oil before installing them.
Be sure to use the right O-rings for R-134a, R-1234yf to
avoid leakage.
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Immediately after using the oil, replace the cap on the
container, and seal it to avoid moisture absorption.
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Do not spill refrigerant oil on the vehicle as it may
damage the paint. If refrigerant oil comes in contact with
the paint, wash it off immediately.
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Apply sealant to the grommets.
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Make sure that there is no air leakage.
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Charge the system and test its performance.
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Do not interchange the inlet and outlet heater hoses
and install the hose clamps securely.
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Refill the cooling system with engine coolant.
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