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.
-
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.
-
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.
-
Access the Pressure Test Kit Service Tools.
Refer to: Climate Control Tools and Equipment (412-00 Climate Control System - General Information, General Procedures).
-
Close the bleed valve at the base of the gauge. Pump 138 kPa (20 psi) of air pressure into the heater core.
-
Observe the pressure gauge for a minimum of 3 minutes.
-
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:
Tire Quality Grades apply to new
pneumatic passenger car tires. The
Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example: Treadwear 200
Traction AA Temperature A.
These Tire Quality Grades are
determined by standards that the United
States Department of Transportation has
set...
Overview
Power Windows
Standard front door power window features include one-touch up and one-touch down operation.
The window control switch:
can be used to manually or automatically raise/lower
all windows from the driver door window control switch or the
individual passenger window from the corresponding door switch...