Vacuum Break
- Inspect vacuum break for bleed hole in vacuum tube. Plug bleed hole with tape prior to testing vacuum break. Using vacuum pump, apply 15 in. Hg vacuum to vacuum break and note vacuum reading.
- Vacuum reading should hold for at least 20 seconds. Apply finger pressure to plunger to determine if plunger has obtained full travel. Replace vacuum break if plunger did not obtain full travel or failed to hold vacuum.