INSTRUCTIONS AND QUICK GUIDE TO TROUBLESHOOTING
THIS WORK PACKAGE COVERS:
General Instructions and Quick Guide
1. Troubleshooting Information for Organizational Level Maintenance can be found in the
appropriate Vehicle manual in which the engine is installed.
2. Troubleshooting Information in this Manual is for use of Direct and General Support
maintenance personnel only. It provides the instructions to supporting maintenance personnel
for corrective action. Good Troubleshooting procedures can:
a. Prevent Damage. Operation of a malfunctioning or deadlined engine without a preliminary
examination can cause further damage to the engine and possible injury to personnel. By
careful inspection and troubleshooting, such damage and injury can be avoided or at least
minimized. In addition, the cause of faulty operation can often be determined without
b. Initiate Precautions mandated by Inspection. The inspections are to be performed before
attempting to operate the engine. Troubleshooting inspections are mainly to determine
conditions and to take precautions to prevent further damage.
2. In-Vehicle Troubleshooting.
a. Troubleshooting performed while the engine is mounted in the vehicle is included in this
troubleshooting section. The procedures for troubleshooting vehicle components and
systems related to engine operation are also included.
3. Out-of-Vehicle Troubleshooting.
a. When the engine only is received, inspection should be performed to verify the diagnosis
made while the engine was installed in the vehicle. This inspection, to uncover further
defects or to determine malfunction, is important as it is the only means for determining
the trouble without completely disassembling the engine.
4. Diagnostic Tests.
a. Diagnostic tests are included in each troubleshooting work package as needed. These tests
provide analysis for the purpose of determining further corrective action required for
eliminating a malfunction.
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