Gorman-Rupp Pumps S4A1-E25 460/3 1396155 and up - Manual (Page 39)

OM-06098 S SERIES PUMPS
PAGE E - 13 MAINTENANCE AND REPAIR
Quite often, pressure exerted on the bushing will
deform the cable jacket. If such happens, addition­
al oil and effort will be required to remove the bush­
ing.
NOTE
If the rubber bushing cannot be removed from the
terminal housing as indicated, it may be necessary
to cut the bushing into small pieces or cut the cable.
Push approximately 6 inches (152 mm) of the pow­
er cable into the terminal housing so that the termi­
nal plate comes free of the terminal housing. This
should permit access to the power cable connec­
tions in the terminal plate.
NOTE
Do not remove the heat shrink tubing from the pow­
er cable leads unless the power cable or terminals
require replacement. If replacement is required,
the connections between the power cable leads
and the terminals must be sealed with heat shrink
tubing before applying the silicone adhesive (see
Terminal Housing And Power Cable Reassemb­
ly).
To disconnect the power cable (2) from the termi­
nal housing, pull the terminal plate (13) away from
the terminal housing. When shipped from the fac­
tory, the connections between the power cable
leads and the terminal collars (12) were encapsu­
lated in heat‐shrink tubing (10) and bonded to the
terminal plate with silicone adhesive (not shown).
(In service, the adhesive may have been replaced
by potting compound during previous repair.) If
damage is extensive and the terminal plate and ter­
minals are to be replaced, simply cut the power
cable leads above the terminal collars and heat‐
shrink tubing, and discard the terminal plate and
terminals.
If damage is not extensive and it is necessary to re­
place the terminal plate (13) or terminal compo­
nents, carefully cut away the tubing and adhesive.
Disconnect the power cable leads from the termi­
nal posts, and separate the terminal plate (13) from
the terminal housing (8). Unscrew the terminal
posts (14), and remove the terminal collars (12),
posts and dyna seal washers (16) from the terminal
plate.
Remove the hardware (18 and 19) securing the
green and yellow ground leads to the terminal
housing. Reinstall the hardware.
See Terminal Housing/Power Cable Reassemb­
ly if no further disassembly is required.
Intermediate And Motor Housing Disassembly
(Figure E-1)
See PUMP END DISASSEMBLY, and remove all
pump end and seal components.
With the pump end disassembled and the motor
cavity drained of oil, secure the pump in an in­
verted position. Remove the hardware (47 and 48)
securing the intermediate (51) to the motor hous­
ing (16). Do not remove the hardware (49 and 50)
around the rotor shaft (40) at this time.
Hook a three‐leg‐sling in the intermediate flange
holes and hoist the intermediate, rotor and shaft
(40), bearing cap (43) and both ball bearings (15
and 18) from the motor housing as an assembly. If
necessary, tap around the parting surfaces with a
soft faced mallet to loosen the seal between the in­
termediate and motor housing. Remove the motor
bushing (44) and motor housing gaskets (12, 13
and 14).
Cover the motor housing with a clean, lint free cloth
to avoid contamination by dirt or other foreign ma­
terial.
Rotor And Bearing Removal
(Figure E-1)
Set the intermediate and rotor assembly on a clean
work area. Leave the lifting slings attached and re­
duce the tension slightly. Remove the hardware
(49 and 50) securing the bearing cap to the inter­
mediate. Steady the rotor and separate the inter­
mediate. If necessary, tap the impeller end of the
rotor shaft with a soft faced mallet to loosen the
seal between the lower ball bearing (15) and the in­
termediate bore.
To prevent damage during removal from
the shaft, it is recommended that bearings