Section I. GENERAL INFORMATION
This manual provides instructions on operation, troubleshooting, and maintenance of the 5kW, 28VDC, Diesel
Engine Driven Auxiliary Power Supply (APU), MEP-952B, NSN 6115-01-452-6513. Information is provided on principles
of operation, controls and indicators, preventive maintenance checks and services, lubrication, operation under both local
and remote conditions, troubleshooting, and maintenance. Refer to Figure 1-1 for full view illustrations of the APU
showing features pertinent to the operator.
1-2. MAINTENANCE FORMS AND RECORDS.
Department of the Army forms and procedures used for equipment maintenance will be those described by DA Pam
738-750, The Army Maintenance Management System (TAMMS).
1-3. CORROSION PREVENTION AND CONTROL (CPC).
Corrosion Prevention and Control (CPC) of Army materiel is a continuing concern. It is important that any
corrosion problems with the APU be reported so that the problem can be corrected and improvements can be made to
prevent the problem in future APUs.
While corrosion is typically associated with rusting of metals, it can also include deterioration of other materials,
such as rubber or plastic. Unusual cracking, softening, swelling, or breaking of these materials may be a corrosion
If a corrosion problem is identified, it can be reported using Standard Form 368, Product Quality Deficiency
Report. Use of keywords such as "corrosion", "rust", "deterioration", or "cracking" will ensure that the information is
identified as a CPC problem.
Submit Form 368 to the address specified in DA Pam 738-750.
1-4. DESTRUCTION OF ARMY MATERIAL TO PREVENT ENEMY USE.
For destruction of Army material to prevent enemy use, refer to TM 750-244-3.
1-5. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR's).
If your APU needs improvement, let us know. Send us an EIR. You are the only one who can tell us what you don't
like about your equipment. Put it on a SF 368 (Product Quality Deficiency Report). Mail it to: Commander, US Army
Communications and Electronics Command (CECOM), Customer Feedback Office, ATTN: AMSEL-LC-LEO-D-CS-CFO,
Fort Monmouth, NJ 07703-5000. We will send you a reply.
1-6. WARRANTY INSTRUCTIONS
The 5 kW 28VDC APU contains two components covered by warranty. The engine has a one year warranty from
the date of manufacture of the generator set. The generator set manufacturing date is located on the generator set
dataplate. The alternator and regulator have a one year warranty from their date of Niehoff manufacture. The date of
manufacture is located on a dataplate attached to the alternator/voltage regulator.
To submit a warranty claim, fill out a Product Quality Deficiency Report, SF368, as per DA PAM 738-750. Be sure
to include the dates from the applicable data plates and check 'Yes' in block 19, Item under warranty. Hold the defective
part until disposition instructions are provided.