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C10_2_ REMOVE AND REPLACE _R_R_ HEATER CORE

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C10_2_ REMOVE AND REPLACE _R_R_ HEATER CORE Powered By Docstoc
					   C10(2) REMOVE AND REPLACE (R&R)
             HEATER CORE
Meets NATEF Task: A7-C-10. Remove, inspect, and reinstall heater core. (P-3)


Name:                                                        Date:

Make/Model:                                          Year:            Instructor’s OK:

Note: This procedure varies greatly between different vehicles. Major differences are how the
heater core is mounted in the HVAC case and how the HVAC case is mounted in the vehicle. In
some vehicles, the HVAC case is cut open.


_____1. Locate the manufacturer’s recommended procedure for heater core replacement on this
      vehicle.

        Information source:                         , Section:                    , Page:

_____2. Indicate the operations that must be done to complete this job.

        Drain coolant                       _____
        Disconnect & reconnect heater hoses _____
        Recover refrigerant                 _____
        Disconnect & reconnect A/C lines    _____
        R & R HVAC case                     _____
        R & R instrument panel              _____
        R & R center console                _____
        Disassemble HVAC case               _____
        R & R HVAC case/Heater Core seals _____
        Bleed heater core                   _____
        Recharge A/C system                 _____

_____3. Drain the coolant to a level below the heater hose connections, and disconnect the heater
      hoses from the heater core.
      Tip: If the coolant is dirty, drain and flush the cooling system before installing the new
      core. Splice the heater hoses together during flushing so dirt and other contaminants can
      be cleaned out of them.

_____4. Perform the necessary operations to gain access to the core, and remove the old heater
      core.

_____5. Install the new heater core. Check any seals to insure they are in good condition and
      properly installed.
       OK _________ NOT OK _________

_____6. Reconnect the heater hoses, and fill the system with coolant.
      Tip: It is recommended to drain and replace the coolant at this time.

_____7. If possible, determine the cause of failure of the old core.

       Leaking solder joint _____
       Corrosion              _____
       Erosion                _____
       Electrolysis           _____
       Note: The last three causes of failure can be the result of bad, worn out coolant.

_____8. Was a special procedure needed to bleed air from the core.

       Yes _________ NO _________

       If yes, briefly describe the procedure:



_____9. What was the flat rate time for this job?                      Hours

				
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