Section III. TROUBLESHOOTING
6-5.
General
6-6.
Troubleshooting
This section provides information for diagnosing and
Malfunctions that may occur are listed in table 6-2. Each
correcting unsatisfactory operation or failure of the
malfunction listed is followed by a test or inspection and
carrier portion of the model M320T2 truck crane.
the recommended corrective action.
Included in this section is a troubleshooting procedure
and references to field expedient repairs.
Note. Malfunctions which are not included in
this table will be reported to your supervisor. ,.
Table 6-2. TROUBLESHOOTING
1
(MALFUNCTION) ENGINE WILL NOT CRANK OR START
Step 1. (Test) Check for corroded battery cables and / or terminals. Check for loose battery cables.
(Corrective Action) Clean cables and/or terminals.
Tighten cables.
Step 2. (Test) Check fuel level.
(Corrective Action) Fill fuel tank.
Step 3. Test Check air cleaner for restricted air intake.
Corrective Action Service air cleaner.
Step 4. (Test ) Check the distributor cap to see if the interior is wet.
(Corrective Action) Dry interior of the distributor cap.
2.
(MALFUNCTION) ENGINE OVERHEATS
Step 1. (Test) Check radiator coolant level.
(Corrective Action) Add coolant.
Step 2. (Test) Check for loose radiator hose connections.
(Corrective Action) Tighten any loose connections.
Step 3. (Test) Check engine oil level.
(Corrective Action) Add oil.
3.
(MALFUNCTION) BATTERIES DISCHARGE WITH ENGINE RUNNING
Step 1. Test Inspect wiring and check for loose connections.
(Corrective Action) Tighten loose connections.
4.
(MALFUNCTION) LOW OIL PRESSURE
Step 1. (Test) Check oil level.
(Corrective Action) Add oil.
5.
(MALFUNCTION) EXCESSIVE OIL CONSUMPTION
Step 1. (Test) Inspect for oil leaks.
(Corrective Action ) Check oil line and tighten loose connections.
6.
(MALFUNCTION) INCORRECT AIR BRAKE SYSTEM PRESSURE
Step 1. (Test) Check for leaks in system.
(Corrective Action) Tighten loose connections.
7.
(MALFUNCTION) ENGINE STALLS AT FULL LOAD
Step 1 (Test) Check to see if air cleaner is clogged.
(Corrective Action) Service air cleaner.
8.
(MALFUNCTION) ENGINE "CUTS OUT" QUITE SUDDENLY UNDER LOAD
Step 1. (Test) Check for dirty fuel.
(Corrective Action) Drain and refill fuel tank.
9.
(MALFUNCTION) ROUGH OR ERRATIC ENGINE IDLING
Step 1. (Test) Check to see if air cleaner is clogged.
(Corrective Action) Service air cleaner.
10.
(MALFUNCTION) ENGINE KNOCKS
Step 1. (Test) Check for low octane fuel.
(Corrective Action) Use correct fuel.
11.
(MALFUNCTION) HARD STEERING WITH VEHICLE MOVING
Step 1. (Test) I Check to see if hydraulic fluid reservoir is too full.
(Corrective Action I Remove fluid until proper level is reached.
6-2
