OM-06111
S SERIES PUMPS
PAGE E - 13
MAINTENANCE AND REPAIR
Centers.
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 or gaskets before re
moval and cleaning to determine if a proper seal
and compression existed prior to disassembly. If
sealing was faulty or questionable, the cause must
be determined and corrected before reassembly.
Replace any parts as required.
Terminal Housing And Power Cable
Removal And Disassembly
(Figure E-1)
Total disassembly of the terminal housing and
power cable (56) is not always required. Disassem
ble and replace
only
the parts proven defective by
inspection or testing (see
Electrical Testing
in
TROUBLESHOOTING
).
The terminal housing and power cable assembly
may be serviced without disassembling the motor
housing or pump end or without draining the oil
from the motor cavity. However, the oil
must
be
drained before attempting to disassemble the mo
tor housing and components.
Secure the pump in an upright position. Remove
the locknuts (39) securing the terminal housing as
sembly to the motor housing assembly (1).
(Figure E-2)
Carefully raise the terminal housing (10) from the
motor housing until the terminals (3) are accessi
ble. Loosen the allen head setscrews (6), and dis
connect the motor leads from the terminal posts.
Separate the terminal housing and power cable
assembly (14) from the motor housing.
No further disassembly is required to test the stator
or power cable.
To disconnect the power cable (14), remove the
nuts (16) securing the terminal gland (12) to the ter
minal housing (1). Slide the gland back along the
power cable. Oil the bushing (17) and terminal
housing bore and pull firmly on the cable. (Allow
the oil to leak in around the bushing by agitating
the cable in the bore.) After the bushing has been
loosened, the cable should pull out far enough to
expose the bushing. Apply oil on the cable jacket
and slide the bushing and washer (18) back along
the cable. Quite often, pressure exerted on the
bushing will deform the cable jacket. If such hap
pens, additional oil and effort will be required to re
move the bushing.
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 (14) from the termi
nal housing, pull the terminal plate (2) away from
the terminal housing. When shipped from the fac
tory, the connections between the power cable
leads and the terminal collars (5) were encapsu
lated in heat‐shrink tubing (20) 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
