Lincoln Nautilus: Climate Control System - General Information / Heater Core Leak Check. General Procedures
Inspection
-
NOTE:
A coolant leak in the heater hose could follow the
heater core tube to the heater core and appear as a leak in the heater
core.
Inspect for evidence of coolant leakage at the heater hose to heater core attachments.
-
NOTE:
Spring-type clamps are installed as original
equipment. Installation and overtightening of nonspecified clamps can
cause leakage at the heater hose connection and damage the heater core.
Check the integrity of the heater hose clamps.
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Drain the coolant from the cooling system. Refer to
Cooling System Draining, Filling, and Bleeding procedure in Group 303.
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Disconnect the heater hoses from the heater core.
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Install a short piece of heater hose, approximately 101 mm (4 in) long on each heater core tube.
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Fill the heater core and heater hoses with water and
install the plug (221373) and the adapter (221374) from the Pressure
Test Kit. Secure the heater hoses, plug and adapter with hose clamps.
-
Attach the pump and gauge assembly from the Pressure Test Kit to the adapter.
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Access the Pressure Test Kit Service Tools.
Refer to: Climate Control Tools and Equipment (412-00 Climate Control System - General Information, General Procedures).
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Close the bleed valve at the base of the gauge. Pump 138 kPa (20 psi) of air pressure into the heater core.
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Observe the pressure gauge for a minimum of 3 minutes.
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If the pressure drops, check the heater hose connections
to the heater core tubes for leaks. If the heater hoses do not leak,
replace the heater core. Refer to the appropriate heater core removal
and installation procedure in Group 412-00.
Leak detection
Review next note for important refrigerant system dye information.
NOTE:
Fluorescent refrigerant system dye is added to the
refrigerant system at the factory to assist in refrigerant system leak
diagnosis using a Rotunda-approved UV
lamp...
Activation
NOTE:
Use Refrigerant Identification Equipment to identify
gas samples taken directly from the refrigeration system or storage
containers prior to recovering or charging the refrigerant system...
Other information:
Switching Climate Control On and Off
Press the button.
Switching Recirculated Air On and Off
Press the button to recirculate
air
currently in the passenger
compartment.
Note: Recirculated air could turn off or be
prevented from turning on in all air flow
modes except maximum cooling to reduce
the risk of the windows fogging up...
What Is Satellite Radio
Your factory-installed SiriusXM radio system
includes a limited subscription term, which
begins on the date of sale or lease of your
vehicle. See an authorized dealer for
availability.
For additional information about extended
subscription terms, visit www...