T.O. 35C2-3-442-2
P-9-TM-457-35
TM-07464A-35 TM 5-6115-457-34
Table 2-3. Troubleshooting (Continued)
PROBABLE CAUSE
CORRECTIVE ACTION
MALFUNCTION
FUEL BURNING WINTERIZATION KIT (Continued)
a. Fuel regulator oper-
a. Test fuel regulator valve
65. Heater has surging
sting irradically.
b. Clean filter.
b. Defective sintered
filter.
a. Defective coolant pump.
66. Coolant pump fails
a. Test coolant pump
to recirculate liquid.
67. Coolant pump turns
a. Pump passages or
a. Remove pump and disas-
over but fails to
blade slots plugged with
semble and clean
deliver liquid.
foreign matter.
68. Heater has erratic
a. Air leaks in tubing.
a. Check tubing connections
operation or reduced
for leaks and repair as
output.
necessary
b. Reduced voltage.
b. Check voltage input to
motor. It should be above
24 vdc (figure 1-29).
c. Motor lags, low rpm.
c. Inspect motor brushes for
wear (paragraph 11-11).
d. Scored cam ring bore.
d. Replace cam ring
e.
Foreign matter in pump
e. Remove pump, disassem-
blade slot.
ble and clean
69. Heater leaks.
a. Face of seal cage
a. Disassemble pump and re-
stored or seal is
finish or replace seal
damaged.
cage (paragraph 11-11).
2-54
