TM 9-2350-230-12
Malfunction
Probable cause
Corrective action
BILGE PUMP SYSTEM
67. Front bilge pump does
a. Loose electrical connection
a. Inspect and tighten con-
not operate when
nections as required.
switch and indicator
b. If circuit breaker does not
light is on
b. Open or defective circuit
breaker
reset in three minutes,
replace (fig. 9-100).
c. Replace relay (fig. 9-108).
c. Defective relay
d. Defective bilge pump
d. Replace bilge pump (figs.
9-130, 131).
a. Turn master switch on.
68. Front bilge pump does
a. Master switch off
not operate when
b. Inspect and tighten or replace
switch is on, indi-
b. Loose electrical connections,
cator light off
defective switch or circuit
components as necessary.
breaker.
c. Replace switch (fig. 9-103).
c. Defective switch
69. Both rear bilge pumps
a. Loose electrical connections.
a. Inspect and tighten connec-
do not operate when
tions as required.
switch and indicator
b. Replace relay (fig. 9-108).
light is on
b. Defective relay
c. Circuit breakers open or
c. If circuit breakers do not
defective
reset in three minutes,
replace (fig. 9-100).
a. Turn on master switch.
70. Both rear bilge pumps
a. Master switch off
do not operate when
b. Inspect and tighten electri-
switch is on, indi-
b. Loose electrical connections.
cator light off
cal connections, as
required.
c. Replace switch (fig. 9-103).
a. Defective switch
71. Only one rear bilge
a. Loose electrical connections.
a. Inspect and tighten connec-
pump operates
tions to inoperative pump
and associated circuit
breaker.
b. If circuit breaker does not
b. Circuit breaker open or
defective
reset in three minutes,
replace (fig. 9-108).
c. Replace bilge pump (figs. 9-
c. Defective bilge pump
129, 130).
8-29
