Town Car V8-4.6L VIN W (1997)
PRESSURE TEST
Use Rotunda Radiator Pressure Tester 014-R1069 or equivalent to perform pressure test.
1. Drain the coolant from the cooling system.
NOTE: Due to space limitations, a bench test may be necessary for pressure testing.
2. Disconnect the heater water hoses from the heater core tubes.
3. Install a short piece of heater water hose, approximately 101 mm (4 inches) long on each heater core tube.
4. Fill the heater core and heater water hoses with water and install Plug and adapter from Rotunda Radiator Pressure Tester 014-R1069 or
equivalent in the heater water hose ends. Secure the heater water hoses, plug and adapter with hose clamps.
5. Attach the pump and gauge assembly from Rotunda Radiator Pressure Tester 014-R1069 or equivalent to the adapter.
6. Close the bleed valve at the base of the gauge and pump 241 kPa (35 psi) of air pressure into the heater core.
7. Observe the pressure gauge for a minimum of three minutes. The pressure should not drop.
8. If the pressure does not drop, no leaks are indicated.
9. If the pressure drops, check the heater water hose connections to the core tubes for leaks. If the heater water hoses do not leak, remove the
heater core from the vehicle and perform bench test.
