E 250 3/4 Ton Van V8-5.4L CNG VIN M (1997)
Vacuum Harness HVAC: Service and Repair
Special Tools
Vacuum Tester Kit
1. Measure the length of the damaged area of the mini-tube vacuum hose.
2. Cut apiece of standard 3-mm (0.125-inch) inner diameter vacuum hose approximately 25 mm (1 inch) longer than the damaged area of the
mini-tube vacuum hose.
3. Cut off the mini-tube vacuum hose on each side of the damaged area.
4. Dip the mini-tube hose ends in commercially available paint thinner containing Methyl Ethyl Ketone (MEK). This solvent will seal the mini-tube
in the vacuum hose.
WARNING: READ THE WARNING INFORMATION ON THE PRODUCT LABEL.
5. Insert the ends of the mini-tube vacuum hose approximately 9 mm (0.375 inch) into the ends of the standard 3 mm (0.125-inch) service vacuum
hose section.
6. Shake the service joint after assembly to ensure the solvent is dispersed and the vacuum line is not plugged.
7. Test the system for a vacuum leak in the repair area.
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Use the Vacuum Tester or equivalent.
