TM 9-2330 -211-14&P
Section IV. UNIT TROUBLESHOOTING PROCEDURES
Page
Page
Explanation of Columns . . . . . . . . . . . . . .
Unit Troubleshooting, Table 4-2 . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Symptom Index . . . . . . .
4-9.
GENERAL
Table 4-2 in this section lists the common malfunctions that maybe found during the operation or maintenance of the
semitrailer or components. You should perform the test or inspections and corrective actions in the order listed.
This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a
malfunction is not listed or is not corrected by the listed corrective actions, notify your supervisor.
4-10. EXPLANATION OF COLUMNS
Malfunction. Visual or operational indication that something is wrong with the semitrailer.
Test or Inspection. Procedure to isolate the problem to a component or system.
Corrective Action. Procedure to correct problem.
4-11.
TROUBLESHOOTING SYMPTOM INDEX
This symptom index is provided as a quick way to get you to the part of the troubleshooting table that will help you
solve the problem you are having. It lists all the malfunctions covered in Table 4-2.
Troubleshooting
Procedure
Page
BRAKES
Brakes Drag (One or More Drums Running Hot) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ., . . . . . . . ...4-18
Brakes Will Not Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-12
Grabbing Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-17
No Brakes or Weak Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-14
Slow Brake Application or Slow Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-16
ELECTRICAL SYSTEM
All Lamps Do Not Light.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-10
Dim or Flickering Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-12
One or More Lamps (But Not All) Will Not Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-11
LANDING GEAR
Landing Gear is Difficult to Raise or Lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-19
NOTE
Semitrailer must be coupled to tractor when performing electrical or airbrake system
tests.
