Repair Procedure

A. Vehicle Inspection:

^ Ensure the integrity of the A/C system before proceeding with retrofit.

B. Recover R-12 using R-12 recovery/recycling/recharging equipment:

^ Follow LEXUS recommended procedure.

C. Install R134a service fitting adapters:

1. Remove valve cores from R-12 service fittings and discard.

2. Clean external threads of the R-12 service fittings.

3. Apply adhesive to threads (Loctite 262 or equivalent), screw on R134a adapter fittings, and tighten to 13 ft-lb.

NOTE:
Vehicles with more than 2 service fittings will require the installation of additional adaptors. All service fittings must have R134a adaptors installed.

D. Replace piping and hose 0-rings:

1. Disconnect discharge hose from compressor.

2. Remove and discard old 0-rings.

3. Lubricate with ND-Oil 8 and install new 0-rings.

4. Disconnect discharge hose from condenser.

5. Lubricate and install retrofit 0-rings with ND-Oil 8.

6. Reconnect hoses and torque to specification. (Specifications can be found in applicable manuals/guides.)

E. Replace Receiver

1. Remove original R-12 Receiver and discard.

2. Measure oil and pour 1/2 of specified amount of oil into the "OUT" side of new Receiver (see table for amount).

3. Black out the sight glass on block - joint - type Receiver with black paint.

4. Lubricate and install the 0-rings on the Receiver connections.

5. Install Receiver.

F. Using R134a Recovery equipment, evacuate, charge, and leak test the system (Use equipment manufacturer's recommended procedure).

1. Evacuate for 45 minutes.

2. Vacuum check.

3. If vacuum check is OK, add remaining 1/2 compressor oil using the recovery equipment.

^ Using recovery/recycling/recharging equipment charge the system with the remaining 1/2 of the specified amount of oil from step E2.

4. Charge system with specified amount of R134a. (see reference table).

5. Perform a gas leak check.

G. Confirm cooling performance of Air Conditioning system.

H. Install retrofit labels:

1. Choose R134a "USE ONLY" label for proper oil type (ND-OIL 8).

2. Using a ball point pen, enter the proper retrofit refrigerant and oil charges on the caution label.

3. Cross out unused type of compressor oil on caution label.

4. Affix labels in a prominent location such as radiator support, underside of hood, or suspension tower area.

5. Remove any R-12 labels.