Gorman-Rupp Pumps SFV3A 1473393 and up - Manual (Page 39)

SF SERIES OM-06396
MAINTENANCE AND REPAIR PAGE E - 12
The electrical power used to operate
this pump is high enough to cause inju­
ry or death. Make certain that the control
handle on the control box is in the off po­
sition and locked out, or that the power
supply to the control box has been
otherwise cut off and locked out, before
attempting to open or service the pump
assembly. Tag electrical circuits to pre­
vent accidental start‐up.
Carefully inspect any O‐rings before removal and
cleaning to determine if a proper seal and com­
pression existed prior to disassembly. If sealing
was faulty or questionable, the cause must be de­
termined and corrected before reassembly. Re­
place any parts as required.
Hoisting Bail Removal
(Figure E-1)
The hoisting bail (13) must be removed in order to
remove the terminal housing assembly (10). To re­
move the hoisting bail, disengage the hardware (8
and 12) and separate the bail from the motor hous­
ing.
Terminal Housing Assembly Removal
(Figure E-1)
The terminal housing assembly (10) may be re­
placed without disassembling the motor or pump
end components.
With the pump secured in an upright position, re­
move the hardware (8 and 11) securing the termi­
nal housing assembly to the motor assembly (7).
Carefully pull the terminal housing assembly out of
the motor housing until the power and motor cable
connections with the stator leads can be ac­
cessed.
The contacts on the ends of each cable lead are se­
cured in a plastic housing which mates with a cor­
responding housing on each of the stator leads.
Carefully pull each of the cable lead housings apart
from its corresponding stator lead housing and re­
move the terminal housing assembly from the
pump.
Further disassembly of the terminal housing as­
sembly is not required. Individual parts are not sold
separately.
See Terminal Housing Assembly Installation if
no further disassembly is required.
Rotor Shaft and Bearing Removal
(Figure E-2)
See PUMP END DISASSEMBLY, and remove all
pump end and seal components.
With the pump end disassembled and the seal cav­
ity drained of oil, secure the pump in an inverted
position. Remove the hardware (11 and 12) secur­
ing the intermediate (7) to the motor subassembly
(1).
Carefully pull the assembled intermediate, rotor
shaft (3) and bearings (2) out of the motor housing
until the female terminal (14) can be accessed. Pull
the female terminal off the male terminal (15) and
remove the intermediate, rotor shaft and bearings
from the motor assembly. Remove the O‐ring (5)
from the intermediate shoulder.
If the moisture sensor (13) requires replacement,
unscrew it from the hole in the intermediate.
Remove the snap ring (4) from the groove in the in­
termediate and pull the assembled rotor shaft and
bearings out of the intermediate.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and rotor
assembly is removed.
Before removing the bearings from the rotor shaft,
clean and inspect the bearings in place as follows.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.