Section I. GENERAL
This manual is for your use in operating and maintaining the Concrete-Mobile mixer unit which is mounted on an M919
truck chassis. Instructions for operating and maintaining the vehicle chassis are contained in TM 9-2320-273-10.
Equipment description herein is non-metric and does not require metric conversion or special tools. Tactical instructions
will include metric units in addition to English units. Clarity of instructions is not impaired.
1-2. Maintenance Forms and Records.
Equipment maintenance forms and procedures for their use are contained in TM 38-750, The Army Maintenance
Management System (TAMMS).
1-3. Reporting Equipment Improvement Recommendations (EIR).
ElR's will be prepared on DA Form 2407, Maintenance Request. Instructions for preparing ElR's are provided in TM 38-
750, The Army Maintenance Management System (TAMMS). ElR's should be mailed directly to Commander, U.S. Army
Tank-Automotive Material Readiness Command, ATTN: DRSTA-MVB, Warren, Michigan 48090. A reply will be furnished
directly to you.
Section II. DESCRIPTION AND DATA
a. Component Locations. Figure 1-1 identifies major components and their locations
b. General. The Concrete-Mobile mixer unit (hereafter referred to as the mixer) is a combination materials
transporter and concrete mixing plant. The special body is mounted on a model M919 truck chassis (see TM 9-2320-273-
10 for truck operating procedures). The mixer carries sufficient unmixed material to produce fresh concrete in any quantity
up to 8 cubic yards (6.12 m3). The concrete is mixed at the site and since the unit has been precisely calibrated, mixes
can be produced that meet or exceed American Concrete Institute and American Association of State Highway and
Transportation Officials standards for design strength. The unit can be used on an intermittent or continuous basis.
However, continuous operation is dependent on the availability of raw material at the site. Some control settings for the
mix operations vary from truck to truck and from site to site. The operating instructions in this manual identify which
settings vary. Your supervisor will provide you with the correct settings for your truck