Gorman-Rupp Pumps SFDV4B 1520149 and up - Manual (Page 36)

SF SERIES OM-06407
MAINTENANCE AND REPAIR PAGE E - 12
MOTOR DISASSEMBLY
Disassembly of the motor is rarely required except
to replace the motor rotor, stator or bearings. Do
not disassemble the motor unless it is necessary
and a clean, well‐equipped shop is available.
NOTE
It is recommended that a pump with a defective mo­
tor be returned to Gorman‐Rupp, or to a Gorman‐
Rupp authorized Submersible Repair Center.
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 (8) to the motor subassembly
(1).
Carefully pull the assembled intermediate, rotor
shaft (3) and bearings (2 and 5) out of the motor
housing until the female terminal (14) can be ac­
cessed. Pull the female terminal off the male termi­
nal (15) and remove the intermediate, rotor shaft
and bearings from the motor assembly. Remove
the O‐ring (6) from the intermediate shoulder.
If the moisture sensor (13) requires replacement,
unscrew it from the hole in the intermediate.