MP Pumps S300, S600, S700, & FM40 PUMPS INSTRUCTION - Manual (Page 4)

Put the seal spring over the shaft and onto the seal.
Slide the impeller over the shaft and hold it in place by
hand. Then thread the front seelbolt assembly into
the shaft. Hold the impeller and tighten the seelbolt to
a torque of 15 foot pounds.
Put the pump housing gasket over the seal adaptor
and replace the housing using the eight capscrews and
lockwashers that were previously removed.
Install the drain plugs in the housing if they were
removed. Install the jackscrews in the threaded holes
in the body. They should be tightened just enough to
keep them from falling out.
ADJUSTING IMPELLER END CLEARANCE -
For pedestal mounted pumps: Loosen the shaft sleeve
clamp and use a tool to push the impeller back, from
the inlet of the pump, far enough to insert a piece of
.020-.025” shim stock between the end of the
impeller and the wear plate. Release the impeller and
tighten the three hex head capscrews on the drive end
of the pedestal assembly. The three dog point set
screws can then be tightened and locked in place with
the three hex nuts. Remove the shim stock from
between the impeller and wear plate.
LUBRICATION - The liquid being pumped lubricates the
shaft seal. No additional lubrication is required.
Rotating equipment such as electric motors or engines
used to drive the pump should be lubricated in
accordance with the manufacturer’s instructions.
Pumps with grease lubricated bearings do not require
lubrication as the bearings have been pre-lubricated at
the factory.
WEAR RING - Series 700 pumps are provided with a
wear ring in the housing. The Series 300 and FLOMAX
40 do not use wear rings. The wear ring is a press fit in
the housing. If it is worn to the point of replacement it
must be cut with a chisel and deformed to be removed.
A new wear ring must be pressed into place using an
arbor press and a cylindrical tool or heavy flat plate of
the approximate OD of the wear ring. The important thing
to remember when installing the wear ring is to press it
in squarely. Then it will go in easily. If it is misaligned
slightly, it will be very difficult to press into place.
FIGURE 1
FORM 3021-D (10/04)
4