Fristam Pumps
4
b
EARINg
AND
/
OR
S
hAFT
R
EPLACEMENT
FOR
FKL 50 S
ERIES
CAUTION! Begin all pump maintenance by disconnecting the energy source to the pump.
Observe all lock out/tag out procedures as outlined by ANSI Z44.1-198 and OSHA
1910.147 to prevent accidental start-up and injury.
For the FKL 5, 75, 150, 50 and 400 Series Bearing and/or Shaft Replacement instruc-
tions see pages 18-3.
T
OOLS
R
EqUIRED
FOR
g
EARbOx
D
ISASSEMbLy
:
5 mm Allen wrench
13 mm wrench
3/8” Allen wrench
Snap ring pliers (with straight and 90° pins)
Spanner wrench (for M45 lock nut)
Arbor press
Screwdriver (small flat blade)
1” diameter wooden dowel
Soft-faced hammer
Hammer (standard steel)
Brass rod
Bearing heater
Shim stock packet (order from Fristam prior to disassembly)
Torque wrench
Indicating torque wrench
g
EARbOx
D
ISASSEMbLy
To start the gearbox disassembly, complete the Pump Head Disassembly on pages 11-1.
a) Remove oil drain plug with the 3/8” Allen wrench and drain the oil.
b) Remove the gearbox cover bolts with the 13 mm wrench and remove the gearbox cover and gearbox
cover gasket.
c) Remove the bearing cap screws with the 5 mm Allen wrench, then remove the bearing caps.
d) Remove the bearing cap o-rings from both bearing caps and the rear oil seal from the drive shaft
bearing cap.
e) Remove the gear snap rings from the groove in both shafts with the 90° snap ring pliers.
f) Install the rotors onto the pump shafts. Secure the rotors from turning by placing the wooden dowel
between them as shown in
Figure 33.
g) Straighten the bent tab on
the bearing lock nut washer
on both shafts with the
screwdriver.
h) Loosen the bearing lock
nut from both shafts using
the spanner wrench.
i) Remove the bearing lock
nuts, bearing lock nut
washers, bearing spacers
and rotors from both pump
shafts.
j) Place the gearbox on an ar-
!
IL-0536
Figure 33