G 2500 3/4 Ton Van V8-305 5.0L VIN M SFI (1997)
Hose/Line HVAC: Service and Repair
Rear A/C Line and Heater Line
Remove and Install
Minumum Tube Length Requirements Chart
Tool Required:
J 41425 A/C Line Repair Kit
The A/C line repair kit is the recommended repair for all A/C lines that require repair caused by rub through, collision damage, or system leakage. In a
situation that the A/C line has visible damage in a bend area, the A/C line needs to be sectioned. Sectioning the line will obtain the original line shape to
avoid vibrations or possible rub through.
Straight Line Repair
1. Recover the A/C system. Refer to "Recovering the A/C System".
2. Locate the repair area.
3. With a tubing cutter, cut the damaged line for repair.
4. Clean any burrs or grease at least 3/4 of an inch from the A/C line using the cleaning pad provided in the kit.
5. Prep the A/C line to be repaired using the 10k prep sealant.
6. Install the proper LOK fitting into the jaws.
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Apply one drop of the sealing compound (J 41425-3) to the outside of each line end.
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Insert the line ends into the LOK fitting. Rotate the LOK fining one complete turn to evenly distribute the sealing compound around the lines.
7. Install J 41425-1 tool over the connector and tubes.
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The connector ends must be positioned in the counter bores of the jaws.
8. Turn the forcing screw while holding the tool body with a 3/8 breaker bar until both of the connector collars have bottomed on the center shoulder
of the LOK fining.
9. Loosen forcing screw and remove the tool from the repaired line.
10. Verify LOK fining for proper installation.
11. Recharge the A/C system. Refer to "Recharging the A/C System".
12. Verify system for no leakages.
A/C Line Sectioning Repair
If a leak has occurred on a bend of the A/C line, the line must be sectioned for repair.
Important
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Sectioning the A/C lines will require a minimum length to the straight part of the line on both sides of the splice. Refer to the "Minimum Tube
Length Requirements Chart".
1. Recover the A/C system. Refer to "Recovering the A/C System".
2. Obtain a new A/C line for sectioning.
3. Scribe a mark on the damaged A/C line to be cut using the "Minimum Tube Length Requirements Chart".
4. Scribe a mark to the new line to be sectioned.
5. Using a tubing cutter, cut both A/C lines.
6. Clean any burrs or grease at least 3/4 of an inch from the A/C line using the cleaning pad provided in the kit.
7. Prep the A/C line to be repaired using the LOK prep sealant.
8. install the proper LOK fitting into the jaws.
^
Apply one drop of the sealing compound (J 41425-3) to the outside of each line end.
^
Insert the line ends into the LOK fining. Rotate the LOK fining one complete turn to evenly distribute the sealing compound around the lines.
9. Install J 41425-1 tool over the connector and tubes.
^
The connector ends must be positioned in the counter bores of the jaws.
10. Turn the forcing screw while holding the tool body with a 3/8 breaker bar until both of the connector collars have bottomed on the center shoulder
