GENERAL MAINTENANCE INSTRUCTIONS
1. These general maintenance instructions contain shop practices and specific methods you
must be familiar with to properly maintain the equipment. You should read and understand these
practices and methods before performing any maintenance procedures.
2. Before beginning a task, find out how much repair, modification, or replacement is needed to fix
the equipment. Sometimes the reason for equipment failure can be seen right away and complete
tear down is not necessary. Disassemble equipment only as far as necessary to repair or replace
3. In some cases, a part may be damaged during removal. If the part appears to be good, and other
parts behind it are not defective, leave it in place and continue with the procedure. Here are a few
a. Do not remove dowel pins or studs unless loose, bent, broken, or otherwise damaged.
b. Do not remove bearings or bushings unless damaged. If you need to remove them to access
parts behind, carefully pull out bearings and bushings.
Replace all gaskets, lockwashers, self-locking nuts, seals, cotter pins, and preformed
4. The following "Initial Setup" information applies to all maintenance procedures:
a. Resources are not listed unless they apply to the procedure.
b. "Personnel Required" is listed only if more than one mechanic is required to complete the
5. All tags and forms attached to the equipment must be checked to learn the reason for removal of
equipment from service. Modification Work Orders (MWOs) and Technical Bulletins (TBs) must
also be checked for equipment changes and updates.