Instructions For '87-94 Loyale

NOTES:
1. Always lubricate all 0-rings with PAG oil before installation.
2. Always tighten fittings to proper torque specifications.
3. Observe all safety recommendations.
4. System to be serviced by qualified personnel.

1. Repair any problems or leaks before beginning retrofit procedure.

2. If the R-12 vehicle air conditioning system is operational run it at idle with the A/C blower on high speed for (5) minutes to optimize the amount of oil in the compressor.

3. Recover all R-12 refrigerant from the vehicles A/C system utilizing a UL approved R-12 recovery device.

4. Remove and discard discharge hose, retain all hardware.

5. Remove and discard suction hose, retain all hardware.

6. Remove compressor from the vehicle.

CAUTION:
hoses or block fittings on hose assemblies should be capped or protected from foreign matter entering the system.

7. Remove the compressor oil plug and then drain as much mineral oil as possible from the compressor body. Drain mineral oil from the cylinder head, suction and discharge ports while turning the shaft with a socket wrench on the clutch armature retaining nut.

8. Replace the compressor oil plug 0-ring with a replacement 0-ring, part number: S0A864A320. Reinstall compressor oil plug to the compressor and reinstall the compressor.

9. Install new discharge hose, part number: S0A864A300, using all applicable O.E. hardware. Lubricate the discharge hose 0-rings before installation.

NOTE:
'90 thru '94 Loyale systems require that an A/C discharge hose extension, part number: 73044GA321, be attached to the discharge hose to complete the assembly. This hose extension is a standard part in Loyale A/C systems manufactured before '90, and is included in this kit.

10. Install new suction hose, part number: S0A864A310, using all applicable O.E. hardware. Lubricate the suction hose 0-rings before installation.

11. Remove the existing R-12 receiver/drier from the vehicle and discard. Allow as much oil as possible to drain from A/C hoses or pipes.

12. Remove and discard the receiver/drier 0-rings and replace with new o-rings, part # S0A864A320.

13. Install the new receiver/drier, part number: S0A864A200.

14. Paint the receiver/drier sight glass with touch-up paint. The sight glass can not be utilized in testing R-134a performance.

15. Add 150cc of PAG oil lubricant, P/N: S0A864A330 to the system as follows:

a. Follow charging station equipment manufacturer's procedures.

b. If there is no provision for lubricant addition, use the following procedure:

^ Prepare the vacuum pump to pull negative pressure at the low pressure adapter fitting.
^ Connect the end of the high pressure charge hose to the high pressure adapter fitting.
^ Place the other end into a graduated marked container that contains the specified type of PAG lubricant.
^ Pull a negative pressure (vacuum) on the low side of the A/C system, which will draw the lubricant into the high side.
^ Discontinue the negative pressure (vacuum) when 150cc of PAG oil lubricant, P/N: SOA864330 has been drawn into the system.

16. Evacuate the A/C system for 45 minutes using R-134a equipment.

a. After 10 minutes close the manifold gauge valves & perform a VACUUM LEAK TEST

b. After 5 minutes re-check the low pressure gauge reading. If the vacuum level has changed more than 1 in HG, pressurize the system and perform an electronic leak test of the system.

c. If no leak is indicated resume evacuation (remaining 35 minutes).

17. Charge the system with 21 oz. of R-134a refrigerant. Leak check the system using R-134a refrigerant equipment.

18. Remove the old R-12 A/C ID tag and discard.

19. Fill out the R-134a retrofit label, part number: S0A635054, by lifting white backing tape and writing in oil type 1000 PAG, the oil amount 150cc, and the R-134a charge amount 21 oz. Locate the label in a highly visible location such as the fire wall or hood. Pull white backing off the label and cover the label with the clear portion of label. Fill out the bottom portion of R-134a A/C ID tag and place next to the top portion.

20. Conduct a performance test. Reference service manual for R-134a performance characteristics.