Attachment III - Technical Instructions
ATTACHMENT IIIB Program
OWNER NOTIFICATION PROGRAM 93B16
Air Conditioning Discharge Line
TECHNICAL INSTRUCTIONS
SERVICE PROCEDURES
1. Discharge the refrigerant from the system. Refer to Section 36-32 of the Shop Manual for the procedures. Technicians must use R-12 recycling equipment to discharge the system.
2. Touch the compressor-to-condenser discharge line (Fig.1) with a magnet to see if it is steel or aluminum.
If the discharge line is aluminum, remove it, using spring lock coupling tools No. T81P-19623-G1 and G2. Discard the line. Install a new steel discharge line assembly, Part No. F2VY-19972-A and replace the black o-rings on the condenser connector for the discharge line with green o-rings from the o-ring kit.
If the discharge line is steel, the line and o-rings are OK. Proceed to Step 3.
3. Remove the condenser-to-evaporator and compressor-to-accumulator/drier lines, using the appropriate spring lock coupling tools.
4. Remove the existing o-rings from the spring lock couplings. Perform the following service procedure on each of the spring lock couplings.
Remove the existing black o-rings being careful not to scratch the grooves in the male fitting or inside of the female fitting. (a scratch can result in a refrigerant leak).
Remove any surface residue from the inside of the female spring lock coupling and the grooves of the male spring lock coupling by polishing with 400 grit emery cloth as shown in Fig.2. Polish the female surface by using a twisting motion so that any scratches will not cross the o-ring sealing surface.
Perform any additional polishing of the surfaces with 600 grit emery cloth, or equivalent.
Wipe all sealing surfaces clean with a lint free rag being careful to remove all minute particles from the polishing operation.
5. Oil the inside of the female spring lock coupling and the new green o-rings, from the o-ring kit, with compressor oil YN-9 or equivalent.
6. Reconnect all the spring lock couplings.
7. Recharge the system with 40 oz. +/- 1 oz. of R-12 refrigerant. Refer to Section 36-32 of the Shop Manual for the procedures.
8. Check the operation of the system.