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TM 10-3930-671-24
CHAPTER 5
DIRECT SUPPORT/GENERAL SUPPORT MAINTENANCE
5-1.
MAINTENANCE INTRODUCTION.
This section contains overhaul procedures for those reparable parts not covered by vendor manuals. In addition to
overhaul procedures for reparable assemblies, this section includes instructions, under the headings of:
a.
General Removal Instructions
b.
General Disassembly Instructions
c.
General Cleaning Instructions
d.
General Inspection Instructions
e.
General Repair Instructions
f.
General Assembly and Installation Instructions
These instructions apply to all procedures in this manual.
5-2.
GENERAL REMOVAL INSTRUCTIONS.
Before removing any part, check Table 2-1, Unit Troubleshooting Symptom Index, or Table 4-1, DS/GS Troubleshooting
Symptom Index, to determine if the trouble is actually in that component. Also, carefully observe the following procedures:
a. Before removing any component of the electrical, hydraulic, or fuel systems, make sure the system is not
energized or pressurized. Disconnect the battery ground cable and relieve all pressure from the hydraulic and/or fuel
systems.
b. Ensure that adequate clearance exists for removal of the component. Remove adjacent components to the
extent necessary to provide adequate working clearance.
c. Before removal, clean exterior parts to remove accumulated mud, tar, grease, or other foreign materials. This
will aid the inspection and disassembly process.
d. Use a suitable lifting device with an appropriate chain when lifting heavy objects. Position and attach lifting
device so as to remove all strain from the mounting hardware before hardware is removed.
e. To aid in assembly and installation, apply identifying tags to mating ends of electrical, hydraulic, and fuel lines
as they are removed or disconnected. Identify parts of similar configuration to ensure correct installation.
f. Note the original position of components before removing. Be sure the original position is restored.
g. Components, even though defective, should be treated as valuable items because of possible reclamation or
salvage value.
5-3.
GENERAL DISASSEMBLY INSTRUCTIONS.
a. Keep work area clean to avoid contamination of internal parts. This is especially important for disassembly of
hydraulic components.
5-1
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