Section I. INTRODUCTION
1. WARRANTY IDENTIFICATION. This TB covers only the Cummins engine model NHC250
and the Detroit Diesel Allison Transmission model MT654 as installed in the M939 Series
2. PURPOSE. This bulletin is intended to clarify the warranties for the Cummins engine model
NHC250 and the Detroit Diesel Allison transmission model MT654 as installed in the M939
Series Trucks. It has detailed instructions on how to get services and/or parts covered under
the warranties. It explains the proper method of processing warranty claims for service and/or
3. GUIDANCE. This bulletin is a general guide and applies to users of M939 Series vehicles,
a. Using Unit's Standard Operating Procedures (SOP's) implementing these guidelines
must be established at a practical level to ensure that the procedures in this bulletin are
followed. This is mandatory for you, the User, and the Government to realize all benefits the
vehicle warranty is intended to provide.
b. To the extent possible, a single point of contact should be designated for an
installation or predetermined command/geographical area. The number of personnel/units
contacting the manufacturer must be kept to a minimum.
(1) CONUS - Active Army and USAR units should process warranty claims through
support maintenance channels to the Director, Industrial Operations (DIO) of the installation
which normally provides maintenance/supply support.
(2) National Guard units should process warranty claims through the State
(3) OCONUS - Units should process warranty claims through support maintenance
channels "to a single point of contact established within the Theater subordinate command(s)
exercising management control of General Support maintenance.
c. Maximum cooperation between the manufacturer or their representative and the User
is desired and necessary. Do not participate in warranty disputes. Warranty disputes should not
deadline equipment. Defective parts should be replaced and the vehicle placed back into
operation. Follow local SOP and the procedures detailed in this bulletin when there is sufficient
evidence that a warranted part(s) is defective and that replacement parts and/or services is due
the Government. ALL disputes will be handled by the National Maintenance Point (NMP),
DRSTA-MTB, and the Government Contracting Officer, in conjunction with the manufacturer
or their representative.
d. If the Government elects to place quantities of newly delivered vehicles in government
storage, Cummins agrees that the time period of the engine warranty will not begin to run until
each vehicle is withdrawn from government storage or until six months from date of
acceptance, whichever occurs first. The Government, prior to placing each new vehicle in
storage and again at time of their withdrawl, shall notify `manufacturer thereof and identify
each vehicle and its time in and out of storage. Vehicles designated as production samples shall
be treated as vehicles placed in storage for warranty purposes.
e. The warranty period on engines and/or transmissions perserved in containers will begin
when the engine and/or transmission is installed in vehicle.