| 5. |
Install in the reverse order of removal.
| • |
If you're installing a new heater core, add refrigerant oil
(PAG OIL).
|
| • |
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 or R-1234yf to avoid leakage.
|
| • |
Immediately after using the oil, replace the cap on the container,
and seal it to avoid moisture absorption.
|
| • |
Do not spill the refrigerant oil on the vehicle; it may damage
the paint; if the refrigerant oil contacts the paint, wash it
off immediately.
|
| • |
Apply sealant to the grommets.
|
| • |
Make sure that there is no air leakage.
|
| • |
Charge the system and test its performance.
|
| • |
Do not interchange the inlet and outlet heater hoses and install
the hose clamps securely.
|
| • |
Refill the cooling system with engine coolant.
|
|
Heater Unit Repair procedures
Evaporator Core Repair procedures