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ENGINE FUEL SYSTEM VOLTAGE TESTS (continued)
PROCEDURE
For Codes 11199 and 11408
1. Place the run/stop switch in the “RUN” position and
within 30 seconds, check for 11 to 13 VDC
between terminal J31-9 (+) and terminal B-1 (-).
2. Check for battery voltage between terminal J31-1
(+) and terminal B-1 (-).
3. Check for positive battery voltage between the ter-
minal where lead 212F connects to the engine tem-
perature switch and a good chassis ground. See
the wiring diagram.
If the correct voltage is present for tests #1 and #2,
check the wiring and connections between the PC
board, the primary solenoid, and the fuel pump. See
wiring diagram.
If no voltage is present for tests #1 and #2, check the
run/stop switch and all wiring and connections between
terminal J31-1 and the positive battery terminal. Check
all the wiring and connections between Terminal B-1
and the negative battery terminal. See wiring diagram.
If the correct voltage is not present for test #3, check
the wiring between the engine temperature switch and
run/stop switch.
If the correct voltage is present for test #2, but not for
test #1, and the voltage reading was taken within 30
seconds of placing the run/stop switch in the “run” posi-
tion, The PC board is faulty and should be replaced.
NOTE: The fuel solenoids, temperature switch and the
fuel pump are part of the Perkins engine and
should be tested and, if necessary, repaired or
replaced by a qualified Perkins engine techni-
cian. To help in precisely identifying a fuel sys-
tem failure, approximate solenoid resistance
values and current draw for the fuel pump are
included on the machine schematic.
TROUBLESHOOTING AND REPAIR
F-76 F-76
SAE-400 SEVERE DUTY
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