11
L-1599 (04-01-22)
REASSEMBLY
1. Insert a shim between the impeller vanes and pump
wear plate. A shim 1/2” wide and 0.040” to 0.050” is
required. Plastic or steel banding can be used as a
shim. Verify banding thickness prior to use. Place shim
material into the pump through the outlet port. Shim
material must lie across the wear plate (Figure 21).
Use caution not to damage ceramic and carbon seal
faces while installing impeller assembly and adapter
flange onto pump.
2. Install impeller assembly, ensuring the impeller vanes
rest on the shim material.
3. Install new gasket onto pump over mounting studs.
Gasket sealant is not required.
4. Install adapter flange over mounting studs.
5. Tighten (6) nuts and lock washers (Figure 22).
2” pump – 5/16 x 18 nut – 11 ft.-lbs./ 14.9 Nm torque.
3” pump – 3/8 x 16 nut – 20 ft.-lbs./ 27.1 Nm torque.
6. Install two-bolt clamp over drive sleeve. Be careful to
ensure keyed portion of clamp sits in drive sleeve slot.
Leave bolts and nuts finger tight. ***Some clamps may
not have an integral key (Figure 23).
OPERATIONS & MAINTENANCE
7. Apply an anti-seize compound to engine, motor, or
pedestal shaft.
8. Install gas engine, c-faced electric motor, or pedestal
into pump drive sleeve. Align keyway of drive source
with slot in drive sleeve. Do not rotate the pump shaft
during assembly. This may cause the shim to become
dislodged.
9. Install (4) mounting bolts between pump adapter and gas
engine, electric motor, or pedestal (Figure 24).
2” pump – 5/16 x 24 screw – 11 ft.-lbs./ 14.9 Nm torque.
3” pump – 3/8 x 16 screw – 20 ft.-lbs./ 27.1 Nm torque.
10. Alternately tighten clamp bolts to ensure even torque
and balance.
2” pump – 5/16 x 18 screw – 20 ft.-lbs./ 27.1 Nm torque.
3” pump – 3/8 x 16 screw – 40 ft.-lbs./ 54.2 Nm torque.
11. Remove shim stock from pump outlet.
12. Pump and drive source should rotate freely.
Figure 21
Figure 22
Figure 23
Figure 24
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