NVE MEC 5000 - Adjusting the Automatic Oil Pump

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MEC 5000, 6500 & 8000/P | 17www.natvac.com | 800.253.5500

Adjusting the automatic oil pump

The automatic oil pump is a metered piston-type pump.

If you wish to adjust the pump, please follow these instructions:

Adjusting the oil rate

Oilowischangedbyadjustingthelengthofthestrokeofthepiston.

1. To adjust the oil rate, remove cap #P16. Under this cap you will

ndajamnut#P15andadjustingscrew#P11.

2. To adjust oil rate loosen jam nut and turn adjusting screw

clockwisetoreduceoiloworcounterclockwisetoincreaseoil

ow.

3. When making adjustments do so one turn of the screw at a

time and test before making further adjustments.

4. Be careful to not turn adjusting screw too far counterclockwise

as you may disengage the gears and strip them out.