OM-07264
S SERIES PUMPS
PAGE E - 17
MAINTENANCE AND REPAIR
mediate over the bearing until it seats squarely on
the shoulder of the motor housing. Use caution not
to cut the O‐ring (36). Coat the threads of the studs
(37) with `Never‐Seez' or equivalent compound,
and install the hardware (38 and 39). Torque the
nuts to 20 ft. lbs. (240 in. lbs. or 2,77 m. kg.).
Refer to
PUMP END REASSEMBLY
, and reas
semble the pump end components.
Terminal Housing And Power Cable
Reassembly And Installation
(Figure 2)
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
position and locked out, or that the pow
er 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 startup. Obtain the ser
vices of a qualified electrician, and refer
to the wiring diagram(s) in Installation
And Operation Manual, Section B, and
the Control Box manual to make electri
cal connections.
Clean the exterior of the power cable with warm
water and mild detergent. Check for obvious physi
cal damage. Check the cable for continuity and in
sulation resistance (see
Electrical Testing
in
TROUBLESHOOTING
).
Do not
attempt repairs
except to cut off either end of the cable;
splicing is
not recommended
. Reinstall any wire tags or ter
minals which may have been removed.
Never attempt to alter the length or re
pair any power cable with a splice. The
pump motor and cable must be com
pletely waterproof. Injury or death may
result from alterations.
Use oil to lightly lubricate the outside of the pump
power cable (7), and the bore of the terminal hous
ing (1) and cable grip (6) for ease of assembly.
Slide the cable grip and terminal housing on the
cable, allowing approximately 3 ft. (1 m) of cable to
extend beyond the terminal housing. Temporarily
tape the green and yellow ground wires to the
cable.
Sealing Terminal Housing Connections
With Silicone Adhesive
(Figure 2)
Do not attempt to operate this pump un
less the power cable leads are properly
sealed in the terminal housing. Mois
ture entering the terminal housing
could cause a short circuit, resulting in
pump damage and possible serious in
jury or death to personnel.
When shipped from the factory, the cable leads
and terminals (17) were encapsulated in heat‐
shrink tubing (10), and bonded to the terminal
plate (13) with silicone adhesive to provide a water‐
tight seal. If this insulating material has been dam
aged or removed during maintenance,
it must
be
replaced using materials and equipment approved
by Gorman‐Rupp (see the parts list for repair kits).
NOTE
Heat‐shrink tubing
must
be used to seal the power
and control cable leads to the terminals before
bonding the leads to the terminal plate. If silicone
adhesive is not available in the field, a commercially
available potting kit may be used to bond the con
nections to the terminal plate. If this alternate seal
ing method is used, refer to the instructions in
Seal
ing Terminal Plate Connections With Potting
Compound
. Use
only
materials and heating equip
ment approved by Gorman‐Rupp for field repairs.
Before resealing the power and control cables, re
move all the old adhesive material (or potting com
pound) from the leads, terminal collars, and termi
nal plate. Inspect all parts for damage, and replace
as required. If the rubber bonding material on the
terminal plate (13) is severely worn or cracked, the
