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TM 10-3930-659-20
CHAPTER 4
TROUBLESHOOTING PROCEDURES
Section I. MECHANICAL, ELECTRICAL, AND
HYDRAULIC TROUBLESHOOTING
Paragraph
Page
Number
Paragraph Title
Number
4-1
General ............................................................................................................
4-1
4-2
Explanation of Columns....................................................................................
4-2
4-3
Troubleshooting Symptom Index ......................................................................
4-2
Table 4-1
Mechanical Troubleshooting .............................................................................
4-7
Table 4-2
Electrical Troubleshooting.................................................................................
4-21
Table 4-3
Hydraulic Troubleshooting ................................................................................
4-37
4-1.
GENERAL.
a.
This section provides information for identifying and correcting malfunctions which may develop when
operating or maintaining the M544E Forklift Truck. Electrical malfunctions are isolated to an individual circuit or
component.
b.
The Troubleshooting Symptom Index (see paragraph 4-3) lists common malfunctions which may occur and
refers you to the proper page in Table 4-1, 4-2, or 4-3 for a troubleshooting procedure.
c.
This section 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.
d.
The condition of the storage batteries should be checked prior to performing any electrical checks (see TM
9-6140-200-14).
e.
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 or symptoms in paragraph 4-3 that best describe the malfunction. If the
appropriate symptom is not listed, notify your supervisor.
(3)
Turn to the page in Table 4-1, 4-2, or 4-3 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.
4-1
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