Navigator 2WD V8-5.4L (2007)
14.
Remove the rear TXV and discard if equipped.
15.
With the Rotunda A/C Flush and Purge machine, attach the correct TXV pass through adapter to the rear evaporator (FS-00707 part of Rotunda
219-00074 Adaptor Kit). Flush the evaporator for a minimum of 20 minutes followed by a purge of a minimum of 20 minutes.
16.
Install a new rear TXV.
17.
Using fittings included with the Flushing Adapter kit, and a section of hose with hose clamps, loop the underbody lines together at the rear of the
vehicle.
18.
With the Rotunda A/C Flush and Purge machine, attach the appropriate fittings to the under body lines in the engine compartment where they
connect to the A/C under hood lines. Flush the underbody lines for 5 minutes, followed by not less than a 10 minute purge. Remove the loop
connection in the rear, and reattach to the rear TXV and rear evaporator.
19.
Reconnect all A/C fittings.
20.
Ensure the entire A/C system is now fully assembled. Put the system under a vacuum for not less than 1 hour. (Required to ensure that all solvent
has been evaporated).
21.
Recharge the A/C system with the correct amount of R134a and inject 5 fl.oz. of PAG oil during the charging process into the low-side service
port.
^
22 oz. - Front A/C
^
33 oz. - With Auxiliary A/C
22.
Leak test and evaluate the system for proper operation. Run system at least 30 minutes.
A/C FLUSH AND PURGE - WITHOUT ROTUNDA MACHINE:
1.
Conduct the evacuation of R134a per the standard procedures in the WSM, Section 412-00: Climate Control System - General Procedures.
2.
Remove the defective compressor from the vehicle per WSM Section 412-01. Add the appropriate amount of PAG oil per WSM, Section 412-00.
Add refrigerant oil recommendations based on system damage level. Install the new compressor into the vehicle.
3.
Remove and replace the discharge line.
4.
Remove and replace the front TXV and rear TXV if equipped. Be sure to re-use the insulating foam from the original TXV and apply electrical
tape or tie straps to hold it in place.
5.
Remove the Receiver Drier Cartridge from the vehicle per the WSM, Section 412-01 and discard.
6.
Reinstall the original cartridge's plug with 0-rings and snap ring back into the condenser.
7.
Remove the right front headlamp assembly per the WSM, Section 417-01.
8.
Disconnect the lower (liquid) line connection to the condenser.
9.
Pull the liquid line slightly forward so it will clear the condenser.
10.
Attach the A/C Pancake Filter Kit with the 1/2" DSL A/C filter adapter fittings and lines (Rotunda Parts 219-00077 & 023-00185). Ensure that the
side of the filter with the label "Inlet from Condenser" is connected to the condenser.
11.
Charge the system with the correct amount of R134a.
^
22 oz. - Front A/C
^
33 oz. - With Auxiliary A/C
12.
Follow WSM, Section 412-00 "Refrigerant System Filtering Following Air Conditioning (A/C) Compressor Installation". Ensure that the elevated
RPM (1200) running of the engine is run for not less than the recommended 1 hour. If equipped with Auxiliary A/C, ensure that the REAR system
is on, high blower, coldest temperature.
13.
Recover the R134a in the system.
