MIL-T-52896B(ME)
be equipped with an anti-splash cover to facilitate clean-out and provide clean operation. Two delivery chutes shall be provided with supports and hand operable fasteners to attach to the mixing chute.
3.3.7 Mix proportioning system. The continuous proportioning of materials shall be controlled by volume. Adjustable volume control gates shall be furnished on the sand and aggregate bins for proportioning the mix to meet desired design strengths. The cement shall be proportioned by a rotary feeder encased in a drop-through housing. The sand and aggregate shall be conveyed to the mixing chamber from the respective bins by a common conveyor belt. The conveyor belt shall be moved by two paralleled chains adequately supported by removable wear bars. A system to continuously oil the chains during mixing shall be provided. If the chain oiling system must be attended on a less than weekly basis, then the oiling system must be readily accessable.
3.3.8 Mixer drive train. Power for the mixer shall be provided from the truck engine or transmission through a power take-off. Power take-off speed shall be proportional-to-engine speed. The power take-off shall permit engagement without clashing with the engine running and transmission in neutral. The power from the power take-off shall be transmitted to power hydraulic pump and water pump. Power take-off and controls are provided by the mobile mixer manufacturer.
3.3.9 Quick-load cement bin. A portable bin shall be provided into which bags of cement may be emptied. The bin shall be so designed that it may be lifted by a front end loader and the cement in it may be dumped into the cement bin on the mixer. The quick-load cement bin shall have a capacity of at least 16 cubic feet.
3.3.10 Admixture system. The manufacturer shall supply his commercial liquid and dry cement admixture systems.
3.3.11 Air system. The system provided to supply air pressure for the pneumatic vibrators shall be taken from the air brake system of the truck chassis. Assure that low pressure release of truck air brakes will not occur.
3.4 Truck chassis. The mixer shall be mounted on a commercial truck chassis as specified in
MIL-T-PD-9156.
3.5 Lubrication. The truck-mounted mixer shall be capable of operating using standard military lubricants. All components requiring lubrication shall be provided with means of lubrication. Initial servicing of each truck-mounted mixer shall be with military lubricants applicable to this type of equipment.
3.6 Maintenance.
3.6.1 Maintainability. All major assemblies and installed attachments shall be accessible for maintenance, repair, and replacement with minimum removal of other major assemblies and
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