Purpose. This volume provides general information pertaining to aircraft hydraulic and pneumatic systems. The
application of materials and techniques used on specific aircraft is not covered In this volume. Specific aircraft
application, usage, and substitution are found in the individual aircraft maintenance manuals This volume is of maximum
benefit to the mechanic who desires information about tubing systems, flexible hoses, packings and O-rings, and aircraft
system components. This volume furnishes the mechanic a source of information about how to perform various
mechanical functions which are used on all aircraft This volume is not a requisitioning authority, and applicable repair
parts and special tools list should be consulted to obtain the unit of Issue and National Stock Number of the Items
required for maintenance.
Scope. General information to guide aircraft maintenance personnel is covered within this volume; however, no
attempt has been made to include special parts or equipment which are applicable only to individual or specific aircraft
General information on aircraft hydraulic systems is contained In Chapter 2 and hydraulic shop operations are discussed
in Chapter 3. Procedures, techniques, and materials for maintenance of tubing, hoses, packings, O-rings, reservoirs,
filters, pumps, accumulators, valves, brake systems, and absorbing units are presented in Chapter 4.
Consumable Materials. Refer to TM 1- 1500-204-23-6 for consumable materials in this volume.