Gorman-Rupp Pumps SE1 1/2B3-E.33 12V 1483930 and up - Manual (Page 22)

OM−06490 SE SERIES
MAINTENANCE & REPAIR PAGE E − 8
Unscrew the twist-type connector (29) securing
the black (negative) power cable lead to the red
motor lead. Separate the motor cover from the cas-
ing tube.
Remove the O-ring (17) from the groove in the mo-
tor cover.
To remove the power cable assembly (16), remove
the hardware (21 and 22) securing the cable clamp
(23) to the motor cover. Unscrew the gland nuts
(24) from the motor cover and pull the cables,
spacers (25) and sealing rings (26) from the motor
cover. Slide the cable clamp, sealing rings,
spacers and gland nuts off the power cables.
See Motor Cover Installation if no further disas-
sembly is required.
Motor Circuit Breaker Removal
If electrical testing indicates a defective circuit
breaker (31), disconnect the red motor cable lead
and the red power cable lead from the circuit
breaker. Remove the self-tapping screws (32) se-
curing the circuit breaker to the motor.
Motor Brush Removal
With the motor cover removed, the brushes (not
shown) can be easily removed. Remove the two
capscrews (not shown) in the top of the motor as-
sembly and pry the motor casing open.
Disengage the two small screws securing the
brush leads to the motor and remove the brushes.
There are no provisions for replacing motor parts.
Individual motor parts are not sold separately. If the
motor is damaged, the complete motor assembly
must be replaced. See the parts list on page E−3
for replacement parts.
MOTOR REASSEMBLY
Motor Brush Installation
Position the new brushes (not shown) in the brush
holders and secure the brush leads to the motor
assembly with the two previously removed screws.
Reposition the previously separated motor casing
parts. Use caution not to pinch the motor leads and
to make sure the split grommet is properly posi-
tioned in the slot in the motor casing. Secure the
motor casing parts with the previously removed
capscrews.
Motor Circuit Breaker Installation
Secure the replacement circuit breaker (31) to the
top of the motor assembly with the self-tapping
screws (32). If a new motor assembly is being
installed, crimp the ring terminal (30) to the black
motor cable lead.
Secure the ring terminal on the black motor cable
lead to the longer terminal on the circuit breaker
with the previously removed nut.
Cable Assembly and Motor Cover Installation
If the cable assembly (16) was removed for re-
placement, slide the gland nuts (24), spacers (25)
and sealing rings (26) up the ends of the cable
leads approximately 12 inches (305 mm). Feed the
cable leads down through the holes in the motor
cover (18).
Lightly lubricate the upper casing tube O-ring (17)
and install it in the groove in the motor cover.
Refer to the wiring diagram in Figure 3, and use the
wire nut (29) to secure the black motor lead to the
black cable lead. Secure the ring terminal on the
red motor cable lead to the shorter terminal on the
circuit breaker with the previously removed nut.
CIRCUIT BREAKER
(BLACK MOTOR LEAD
TO LONG TERMINAL)
SWITCH
BLACK BATTERY
CLAMP
WIRE
NUT
MOTOR
AUX. BATT.
(GROUND)
RED BATTERY
CLAMP
BLACK
RED
Figure 3. Wiring Diagram
With the pump end components installed and the
casing tube (1A) in place, carefully pull the excess
cable leads up through the holes in the motor cov-
er.