TM 10-4320-226-14
4.8
Use
SECTION IV. UNIT TROUBLESHOOTING
UNIT TROUBLESHOOTING.
the malfunction index to locate specific troubleshooting procedures contained
in table 4-2.
After locating the listed malfunction, perform the test/inspections
and corrective actions in the order listed in table 4-2.
The malfunction index and
Table 4-2 cannot list all the malfunctions that may occur, all the test and
inspections needed to find the fault, or all the corrective actions needed to
correct the fault.
If the equipment malfunction is not listed or actions listed do
not correct the fault, notify your supervisor.
MALFUNCTION INDEX
Malfunction Number
in Table 4-2
Engine will not crank . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Engine will not start . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Engine speed does not adjust . . . . . . . . . . . . . . . . . . . . . . 3
Engine starts or runs erratic after warmup . . . . . . . . . . . . . . . 4
Oil pressure reading low . . . . . . . . . . . . . . . . . . . . . . . .5
Ammeter reading too low . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4-2.
Unit Troubleshooting Table.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ENGINE WILL NOT CRANK.
Step 1.
Check for loose or corroded terminals on battery and starter.
Step 2 Test
a.
b.
Clean and tighten terminals (paragraph 4.12.2).
battery (paragraph 4.12.1).
Recharge battery if low.
Refer to paragraph 4.12.2 and replace battery.
Step 3.
Pull out emergency stop switch.
Panel light should illuminate.
If panel light does not illuminate, go to step 7.
Step 4.
Press oil pressure bypass switch and listen for audible click.
a. If no click is heard, go to step 5.
b. If click is heard, go to step 6.
Step 5.
Test Blower V-belt Contact Switch (paragraph 4.10.9).
Replace v-belt contact switch (paragraph 4.10.10).
4-7
