FRISTAM Positive Displacement Pump FDS-3

Place a brass or aluminum block between the screws to block rotation

Remove the screw nut from the drive screw

Move the block to the underside, near the housing, to torque the opposite screw

Remove the screw nut from the idle screw

Inspect the screw nut gaskets for damage

Ensure the machine is turned off and cooled down

Gather necessary tools and materials (ISO 100 synthetic oil, wrench, oil pan)

Record the current operating hours of the machine

Is the machine operating under severe conditions?

Loosen the casing/housing bolts

Remove the casing from the housing using a rubber mallet if necessary

Inspect the casing/housing gasket for damage

Remove the cover bolts and washers

Remove the cover from the casing

Did you use a rubber mallet to tap the cover off the casing dowel pins?

Inspect the cover gasket for damage

Loosen the four mechanical seal retainer bolts

Remove the mechanical seal retainers

Remove the rotating units from the shafts

Remove the stationary units from the housing

Lubricate the outer O-ring of the stationary seal

Line up the notch to the outside of the housing