FLUSHING INSTRUCTIONS FOR
CONDE VAPOR OIL PUMPS
It may be necessary to flush your Conde Vapor Oil Pump to remove any gum or varnish
buildup inside the pump that causes the vanes to stick in their slots. This is a simple
maintenance operation and should be one of the first steps when troubleshooting a loss of
vacuum in the system.
1. Remove the longer oil tube, which goes from the reservoir to the vacuum.
2. Be sure the exhaust is directed away from the motor. Be careful to contain any mist or spray.
3. Use kerosene or diesel fuel fluid for flushing process. While the pump is running under
vacuum, simply insert the tube into the cleaning fluid and allow the pump to draw the fluid in.
Alternately let air into the tube with the cleaning fluid. It can take up to 4 ounces of cleaning
fluid to clean the pump.
4. In the same manner draw in about 5 ounces of oil to complete the flushing process.
5. Replace the oil tube to its original location. The unit is now ready to return to service.
Note: Under certain circumstances it may be necessary to repeat the flushing procedure.
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