Before beginning a troubleshooting procedure, review the associated maintenance
procedure(s) and determine the amount of disassembly required to perform a test or
inspection. Disassemble the machine only as far as necessary to test/inspect/repair the
damaged, broken, or faulty component.
1. This chapter provides information for identifying and correcting malfunctions that may develop during operation
of the 924H Loader.
2. The Troubleshooting Index (WP 0005) lists common malfunctions that may occur and refers to the proper page
in the troubleshooting procedures.
3. If you are unsure of the location of an item mentioned in troubleshooting, refer to General Information
4. Before performing troubleshooting, read and follow all safety instructions found in the Warning Summary at the
front of this manual.
5. The Troubleshooting Index (WP 0005) cannot list all malfunctions that may occur, nor can troubleshooting list
all tests or inspections and corrective actions.
6. The Troubleshooting Index (WP 0005) lists all possible diagnostic and event codes for this machine.
Troubleshoot the diagnostic code first, then the event code, and then the symptom, unless otherwise directed.
During testing, components and wiring harnesses that have been disconnected may trigger unrelated
diagnostic or event codes.
7. When troubleshooting a malfunction:
a. Locate the symptom in the Troubleshooting Index (WP 0005) that best describes the malfunction.
b. Turn to the page in the troubleshooting work packages which addresses the particular symptom.
Read each step before performing the test or inspection. Most troubleshooting procedures require isolation
and testing of multiple components. To achieve this, the tests are broken down as follows:
(1) Each Test Step contains a sequence number and a title (e.g., Test Step 1. Verify Operation of Driving
Lights). The Test Step title describes the main action occurring in the subsequent procedural steps.
(2) Each numbered procedural step describes a necessary action to carry out the diagnostic process.
(3) Perform each Test Step and subsequent procedural steps and associated corrective action as
directed. Each corrective action will direct you to perform a repair, proceed to another procedural step,
or proceed to another Test Step.
d. Refer to the Schematics Introduction (WP 0426) for an explanation of electrical and hydraulic/pneumatic
schematics. The Schematics Index (WP 0427) identifies each schematic foldout. Review the electrical
schematics (WP 0431, Item 106) or the hydraulic/pneumatic schematics (WP 0431, Item 107) before
troubleshooting the machine.
e. Perform the test or inspection, observe the outcome, and perform the corrective actions in the order listed
until the malfunction/CID FMI Code/EID FMI Code is corrected. When troubleshooting identifies a repair as
a corrective action, first perform the repair, and then return to troubleshooting to verify that the malfunction
is resolved and, if necessary, continue troubleshooting. Do not perform any maintenance task unless the
troubleshooting procedure instructs you to do so.