TM 9-2320-272-10
Section II. TROUBLESHOOTING PROCEDURES
3-2.
SCOPE
The troubleshooting table contains instructions that will help the operator identify and correct simple vehicle
malfunctions during operations. The table also helps the operator identify major mechanical difficulties that must be
referred to unit maintenance.
NOTE
Operators should perform the corrective action in the order listed.
3-3.
TROUBLESHOOTING PROCEDURES
This manual cannot list all malfunctions that may occur. If a malfunction occurs that is not listed in table 3-1, notify unit
maintenance.
3-4.
TROUBLESHOOTING SYMPTOM INDEX
TROUBLESHOOTING
MALFUNCTION
MALFUNCTION
PROCEDURE
NO.
PAGE
ENGINE
1.
When starter switch is turned to start, engine fails to crank.................................................................. 3-5
2.
Engine cranks but does not start ........................................................................................................... 3-5
3.
Engine cranks but fails to start at outside temperatures
below +32°F (0°C) ................................................................................................................................. 3-6
4.
Engine starts but misfires, runs rough, or lacks power.......................................................................... 3-6
5.
Engine overheats as indicated by engine coolant
temperature gauge ................................................................................................................................ 3-7
6.
Low engine oil pressure......................................................................................................................... 3-7
7.
Engine failure during operation.............................................................................................................. 3-7
8.
Excessive exhaust smoke after engine reaches normal operating
temperature 175°F to 200°F (79°C to 93°C) ......................................................................................... 3-8
HEATING SYSTEM
9.
Hot water personnel heater fails to produce heat after
engine reaches normal operating temperature ..................................................................................... 3-8
10.
Heater blower motor operates, but heat fails to reach cab, or
defrosters fail to operate........................................................................................................................ 3-8
TRANSMISSION
11.
Excessive creep in forward or reverse range ........................................................................................ 3-8
12.
Transmission overheating as indicated by transmission oil
temperature gauge ................................................................................................................................ 3-8
3-2
