Form 106323101 rev 3, 07-2021
© Copyright 2021 Franklin Electric Co., Inc.
D-Series Pump End Kits
Assembly Instructions
1/3 to 3 HP 56C Frame
1.
Make sure all the components of the kit are clean, free of burrs and fit
properly during the assembly process.
2.
If applicable, remove the protective film from the motor shaft. Make
sure that each motor has the slinger properly installed. This slinger is
very important and it prevents water from entering the motor along the
shaft.
3. Apply anti-seize on the inside of the shaft coupling and install it on the
motor shaft. Make sure that the set screws are in line with the keyway
and that their tips rest flat on the bottom of the keyway. Do not tighten
the set screws.
4. Position the pump bracket with the nameplate area on the top. Install
the bracket with four bolts.
Do not misalign or bind the bracket when you are tighten
-
ing the bolts.
Tighten the bolts in a diagonal pattern to the following torque specifi
-
cations:
• 3/8” bolts to 20 ft-lb,
• 1/2” bolts to 45 ft-lb
• 5/8” bolts to 93 ft-lb
5. Adjust the distance between the shoulder of the shaft coupling and
the bottom of the mechanical seal pocket according to the table below
the drawing. The adjusting distance (X in the drawing and table) in-
sures that the spring of the mechanical seal has the proper tension.
6. Tighten the set screws at the shaft coupling to a torque of 108 in-lb.
7. Apply P80 lubricant emulsion or an equivalent on the mechanical seal
o-ring cup and install it into the bracket. It is very important to keep
the sealing surfaces as clean as possible. Therefore, avoid touching
them and keep them clear from residue and debris.
8. Apply P80 lubricant emulsion or an equivalent on the mechanical seal
Pump Size
Measurement (X)
DA1A
1.243 ± 0.031
DA1B
1.243 ± 0.031
DB1
1.153 ± 0.031
DB1-1/2
1.183 ± 0.031
DB2
1.243 ± 0.031
bellows and spring and install them on the motor shaft coupling. Again, the sealing surfaces should be kept as clean as
possible. Therefore, avoid touching them and keep them clear from residue and debris.
9. Install the impeller on the shaft coupling. Use 242 Locktite or an equivalent locking compound on the threads. Make sure
the impeller hub is tight against the shoulder of the shaft coupling. Make sure the spring retainer at the mechanical seal is
in the proper position against the hub of the impeller.
10. If it is supplied, install the jam nut on the shaft coupling and tighten it against the impeller. Use 242 Loctite or an equivalent
locking compound. Tighten the jam nut to a torque of 45 ft-lb.
11. Apply P80 lubricant emulsion or an equivalent on the large o-ring and then install it on the outside diameter of the bracket.
12. Carefully place the volute into position. With the discharge pointing in the desired position, install the required quantity of
bolts.
Tighten the bolts in a diagonal pattern to the following torque specifications:
• 3/8” bolts to 20 ft-lb,
• 1/2” bolts to 45 ft-lb
Do not misalign the volute when you are tightening the bolts. Align it carefully and take care not to pinch the
o-ring.
13. Rotate the impeller by hand and make sure that it rotates freely. Tightness of the impeller implies a bind or a misalignment.
