GENERAL MAINTENANCE INSTRUCTIONS--Continued
During disassembly, remove only as many parts or components as required for indicated repair.
Complete disassembly of a component is not always necessary. Use good judgment to keep
disassembly operations to a minimum.
During disassembly, tag critical parts to ensure proper reassembly. Mark mating parts by scribe
marks or indelible ink to be certain of correct positioning at assembly.
Check any tags or forms attached to equipment to learn the reason for the equipment having
been removed from service. Check Modification Work Orders (MWOs) and Technical Bulletins
(TBs) for equipment changes and updates.
Unserviceable or unrepairable assemblies will be broken down into items of issue and
serviceable parts will be returned to stock. Parts or assemblies that cannot be repaired, selective
fitted, or reclaimed to standards contained in this manual will be salvaged and replaced with new
If required new part is not available, reconditioning of the old part is necessary. Carefully inspect
such parts to determine their suitability and probable service life. Immediately requisition
In some cases, a part may be damaged by removal. If the part appears to be good and the other
parts behind it are not defective, leave it on and continue with the procedure.
Do not remove dowel pins or studs unless loose, bent, broken, or otherwise damaged.
Do not remove bearings or brushings unless damaged. If you need to remove them to access
parts behind them, pull bearings and bushings out carefully.
Replace seals and gaskets of all disassembled components.
Replace springs if broken, distorted, cracked, or if they do not conform to specific tensile
Replace screws or nuts having damaged threads or rounded corners. Replace cotter pins,
lockwashers, self-locking nuts, and self-locking screws.
Replace keys if damaged.
During assembly, assemble the subassemblies first. Then combine the subassemblies into major
components and install to make a complete major assembly.
Cleaning compounds can burn easily, give off harmful
vapors and are harmful to skin and clothing. When using
them, keep away from open fire and use in a well-ventilated
area to avoid possible injury or death. If cleaning compound
gets on skin or clothing, wash immediately with soap and water.