TM 9-2330-359-14&P
4-12. GENERAL (Con’t).
d. When troubleshooting a malfunction:
(1) Question the operator to obtain any information that might help determine the cause of the problem.
Before continuing, ensure that all applicable operator/crew troubleshooting was performed.
(2) Locate the symptom(s) in paragraph 4-14 that best describes the malfunction. If the appropriate
symptom is not listed, notify your supervisor.
(3) Turn to the page in Table 4-2 where the troubleshooting procedures for the malfunction in question are
described. Headings at the top of each page show how each troubleshooting procedure is organized:
MALFUNCTION, TEST OR INSPECTION (in step number order), and CORRECTIVE ACTION.
(4) Perform each step in the order listed until the malfunction is corrected. DO NOT perform any
maintenance task unless the troubleshooting procedure tells you to do so.
4-13. EXPLANATION OF COLUMNS.
The columns in Table 4-2 are defined as follows:
(1) MALFUNCTION. A visual or operational indication that something is wrong with the semitrailer.
(2) TEST OR INSPECTION. A procedure to isolate the problem in a component or system.
(3) CORRECTIVE ACTION. A procedure to correct the problem.
4-14. TROUBLESHOOTING SYMPTOM INDEX.
Troubleshooting
Procedure
BRAKES
Brakes Do Not Engage or Are Weak. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes Do Not Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes Drag (One or More Brakedrums Running Hot) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes Engage or Release Slowly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes Grab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SYSTEM
All Lamps Fail To Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dim or Flickering Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
One or More Lamps (But Not All) Fail To Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LANDING GEAR
Landing Gear Difficult To Raise or Lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUSPENSION SYSTEM
Semitrailer Leans To One Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Semitrailer Pulls To One Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TIRES
Abnormal Tire Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page
4-9
4-8
4-10
4-9
4-10
4-7
4-8
4-7
4-11
4-11
4-11
4-10
4 -6
