Express 3/4 Ton Van V8-4.8L VIN V (2003)
10. Apply one drop of the J 41425-3 sealing compound to the outside of each end of the line.
11. Insert the line ends into the LOK fitting.
12. Rotate the LOK fitting one complete turn in order to evenly distribute the sealing compound around the lines.
13. Install the correct LOK fitting jaws into the J 41425-1 tool.
14. Install the J 41425-1 tool over the LOK connectors.
Verify that the LOK connector ends are positioned in the counter bores of the jaws.
15. When fully seated, the LOK connector collars will bottom out on the center shoulder of the LOK fitting.
IMPORTANT: Hold the J 41425-1 tool body with a 3/8" breaker bar.
Tighten the forcing screw of the J 41425-1 tool.
16. Loosen the forcing screw and remove the J 41425-1 tool from the repaired line.
17. Repeat Step 8 through Step 16 to repair the other end of the line.
18. Verify that the LOK fittings are correctly installed.
19. Lower the vehicle.
20. Refill the coolant, if drained. Refer to Draining and Filling Cooling System in Cooling System.
21. Evacuate and recharge the refrigerant, if repairing the A/C lines. Refer to Refrigerant Recovery and Recharging.
LINE SECTIONING REPAIR
1. Recover the refrigerant, if repairing the A/C lines.
2. Drain the coolant, if repairing the heater lines.
3. Raise and support the vehicle. Refer to Vehicle Lifting.
4. Obtain a new A/C or heater line for sectioning.
5. Scribe a mark on the line that will be sectioned.
IMPORTANT: Stagger the splices if repairing more than one line.
6. Use a tubing cutter in order to cut the line or lines being replaced.
7. Remove the section of line being replaced from the vehicle.
8. Install the replacement line to the vehicle.
IMPORTANT: The length of the replacement line must be the same as the line being replaced.
9. Use a tubing cutter in order to cut the replacement line to length.
10. Use the cleaning pad from the J 41425 in order to clean any burrs or grease. Be sure to clean at least 19 mm (0.75 in) from the A/C line.
11. Use the LOK prep sealant in order to prep the A/C or heater line.
12. Apply one drop of the J 41425-3 sealing compound to the outside of each line end.
13. Insert the line ends into the LOK fitting.
14. Rotate the LOK fitting one complete turn in order to evenly distribute the sealing compound around the lines.
15. Install the correct LOK fitting jaws into the J 41425-1 tool.
16. Install the J 41425-1 tool over the LOK connectors.
Verify that the LOK connector ends are positioned in the counter bores of the jaws.
17. Hold the tool body with a 3/8" breaker bar. Turn the forcing screw until both of the connector collars bottom on the center shoulder of the LOK
fitting.
18. Loosen the forcing screw. Remove the tool from the repaired line.
19. Verify that the LOK fitting is correctly installed.
20. Lower the vehicle.
21. Refill the coolant, if drained.
22. Evacuate and recharge the refrigerant, if repairing the A/C lines. Refer to Refrigerant Recovery and Recharging.
