Check oil reservoir, Vacuum pump flushing – Satellite Maintenance Service Truck User Manual
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Check Oil Reservoir
Cleaning: Check and add as needed
Frequency: Daily
Procedure for 1999 and earlier models
Always maintain an adequate oil level in vacuum pump oiler. Vacuum pumps run at high
temperatures and require a good quality oil such as Shell Rotella. Standard automotive oils may
not be adequate and can breakdown under the heat of normal operating conditions.
MAINTENANCE ISSUES
Vacuum Pump Flushing
What occurs: Fluid cleans rotor, vanes and internal
bore
Frequency:Every three months or any time pumping
occurs where waste material gets drawn into vacuum
line
Remove Vacuum intake and exhaust hoses. Use short pieces of hose to add fuel to intake and
collect dirty fuel from the pump in a separate container. Start and run pump at engine low idle
speed. See picture above.
With engine running slowly add about 2 ounces of Diesel or kerosene to the pump. Allow this
fluid to clear then repeat. Run through about 1 quart of liquid in total. Be sure to collect and
properly dispose of liquid that has run through pump.
Slowly poor about 6 ounces of lubricating oil through pump again at 2-ounce quantities. The oil
restores lubricant to the pump.
Stop pump, reconnect lines and dispose of dirty fuel.