Motor Replacement - Franklin Electric BT4 Series Owner's Manual

11. Apply anti-sieze lubricant to the discharge head threads and hand-tighten the discharge head to
the pump shell by twisting it counter-clockwise, then use a pipe wrench to secure it.
• The pump discharge head has a torque setting of 75 inch-lbs.
12. Secure the coupling flats with a wrench and tighten the pump shaft nut.
• The pump shaft nut has a torque setting of 30 inch-lbs.

Motor Replacement

The motor below is either a 56C or square flange model. If it is a square flange, ensure that the motor
shaft adapter is already attached. Refer to
page 7.
1. For 3-phase motors, check the motor rotation as described in
2. Apply one drop of Loc-Tite 243 to each set screw and screw them just far enough into the ID of the
coupling so as to allow for alignment with the motor shaft keyway.
3. Slide the motor onto the pump bracket, lining up the shaft adapter keyway with the coupling set
screws.
4. Fasten the motor to the pump bracket with the four provided bolts, lock washers, and nuts.
• Square flange assemblies have bolts, lock washers, and nuts.
• The end bolts have a torque setting of 115 inch-lbs.
5. Insert a flat-bladed screwdriver between the pump bracket and the coupling. Pry the coupling all
the way toward the motor with the screwdriver.
6. While continuing to hold the coupling in position with the screwdriver, tighten the set screws with
a 5/32-inch Allen wrench.
• The set screws have a torque setting of 75 inch-lbs.
"Square Flange Motor Shaft Adapter Reassembly" on
MAINTENANCE
Reassembly
"Operation" on page 5.
9