Dashpot: Testing and Inspection

Dashpot Vacuum Hose:

1. Disconnect the hose from the Dashpot diaphragm, and connect a vacuum pump to the HOSE that goes to the Dashpot diaphragm.
2. Apply vacuum and check that vacuum rises, then bleeds off to zero.
a. If the vacuum holds or does not rise, then bleed off, replace the Dashpot Check Valve located in the Dashpot vacuum line and retest.

Dashpot Testing:

3. Connect a vacuum pump to the Dashpot diaphragm.
4. Apply vacuum and check that the rod pulls in and holds vacuum.
a. If the vacuum does not hold or the rod does not move, replace the Dashpot, and retest. Refer to "COMPONENT REPLACEMENT AND REPAIR PROCEDURES".