Section I. GENERAL
Scope. This manual is for use in operating and maintaining the Power Unit, PU-406B/M. The
PU-406B/M is a mobile power unit used to supply power to any system or equipment requiring up to 30
KW of 50/60 Hz input operating power. In addition to operating instructions and operator, unit, and
intermediate direct support and general support maintenance procedures, this manual contains a
Repair Parts and Special Tools List for the power unit.
Limited Applicability. Some portions of this publications are not applicable to both services.
These portions are prefixed to indicate the service to which they pertain: (A) for Army, and (F) for Air
Force. Portions not prefixed are applicable to both services.
Maintenance Forms and Records.
a. (A) Maintenance forms and records used by Army personnel are prescribed by DA Pam
b. (F) Maintenance forms and records used by Air Force personnel are prescribed in AFM66-1
and the applicable 00-20 Series Technical Orders.
Reporting of Errors. Reporting of errors and omissions and recommendations for improvement
of this publication by the individual user is encouraged. Reports should be submitted as follows:
a. (A) Army - DA Form 2028 directly to: Commander, US Army Troop Support Command, ATTN:
AMSTR-MCTS, 4300 Goodfellow Boulevard, St. Louis, MO, 63120-1798.
b. (F) Air Force AFTO Form 22 directly to: Commander, Sacramento Air Logistics Center,
ATTN: MMEDT, McClellan Air Force Base, CA, 95652, in accordance with TO-00-5-1.
Reporting Equipment Improvement Recommendations (EIR). ElRs will be prepared using SF
368 Product Quality Deficiency Report. Instructions for preparing EIRs are provided in DA Pam 738-
750, The Army Maintenance Management System. ElRs should be mailed directly to: Commander,
US Army Troop Support Command, ATTN: AMSTR-QX, 4300 Goodfellow Boulevard, St. Louis, MO,
Levels of Maintenance Accomplishment.
a. (A) Army users shall refer to the Maintenance Allocation
maintenance to be performed.
b. (F) Air Force users shall accomplish maintenance at the
Chart (MAC) for tasks and levels of
user level consistent with their
capability in accordance with policies established in AFM 66-1.
1-7. (A) Destruction of Army Materiel. Destruction of Army materiel to prevent enemy use shall be in
accordance with TM 750-244-3.