This is a Department of the Army authenticated operation and maintenance manual for the Tampo RS-28
Vibratory Roller, NSN 3895-01-012-8875. As such, this document complies with MIL-M-7298C in content and
The vibratory roller is used in construction operations such as road bed repairs and construction. Primary tasks
are compacting new beds of sand and gravel prior to laying an asphalt surface. Secondary uses are
compaction of pavement base courses and stabilizing bases.
Compaction is accomplished by a single smooth drum roller powered by a vibratory drive capable of producing
between 1100 and 1500 vibrations per minute. The vibratory drive and drive train are each powered by a
hydrostatic pump and motor unit, coupled by a double pump drive transmission to a Detroit Diesel four-cylinder
4-53 engine. Hydrostatic pumps and motors are manufactured by Sundstrand. The double pump drive
transmission is manufactured by Funk.
Steering is hydrostatically assisted by a Sperry-Vickers pump and an Orbitrol control. It is accomplished
through an articulated hinged joint behind the roller drum. Power is transmitted to drive wheels through a
Rockwell planetary drive axle.
Braking is accomplished by shutting off the hydrostatic drive under normal conditions, and through Rockwell
hydraulic brakes under emergency conditions.
Maintenance Forms and Records
The roller is manufactured by Tampo Manufacturing Company of San Antonio, TX.
Warranties on all
components of the equipment are handled by Tampo. Maintenance Forms and Records
Maintenance forms and records on this equipment are to be maintained in accordance with standards
established in the current TM 38-750, The Army Maintenance Management System (TAMMS).
Equipment Improvement Recommendations (EIR)
Prepare recommendations on equipment improvement in accordance with TM 38-750. ASF 368, Quality
Deficiency Report should be prepared and mailed to: Commander, US Army Tank-Automotive Command,
Warren, MI 48090.
Shipment and Storage
Refer to TB 740-97-2 for procedures covering preservation of equipment for shipment and storage. Refer to
TM 74090-1 for instructions on administrative storage.
Destruction to Prevent Enemy Use
Refer to TM 750-244-3 for procedures covering destruction to prevent enemy use.
A hand-operated fire extinguisher may be installed at the discretion of the using unit. Approved hand-portable
fire extinguishers are listed in TB 5-4200-200-10.
Always observe the following precautions to prevent injury or damage to equipment:
- Use trained operators only.
Always use slower speeds and added caution when operating close to a lift edge or traveling downhill.
Never travel across a slope; always travel up or down a slope.