Operation & Maintenance of Ordnance in Cold Weather FM 9 FM OPERATIONS AND MAINTENANCE OF ORDNANCE MATERIEL IN COLD WEATHER. CLICK HERE TO DOWNLOAD FROM USAPA. Recently. Technical Manual TM (FM ) Operations and Maintenance of Ordnance Materiel in Cold Weather July [United States Government US Army].
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At severe cold temperatures, sidewalls become brittle and crack.
More mechanics are needed to maintain equipment in cold weather operations Figure Consult these catalogs when requisitioning.
Tires become rigid in cold, causing flat spots on parts that come in contact with the ground during shutdown. This accelerates heater failure by carbonizing the wick, igniter, burner, related burner components, or heat exchanger. Mechanics must allow equipment to thaw out and warm 92-07 before making repairs.
Neoprene jackets on cables become brittle and break readily at low temperatures. Drive trains may have to be disconnected to prevent further 9207. Maintenance of many components requires careful and precise servicing. Maintenance, supply, and engineer units may require augmentation.
Since metals contract at lower temperatures and expand at higher temperatures, improper clearances may result in either binding or excessive looseness.
Support units must be prepared to handle and transport the added volume of ammunition. The incomplete combustion of fuels in a cold engine, and the piston rings not sealing tightly until the engine reaches operating temperatures, causes rapid fuel dilution of the oil.
FM TABLE OF CONTENTS
This equipment is issued in specific kits. For example, hoses for fueling may crack, increasing the potential for spills. For a given change in temperature, various metals will expand or contract 9-20 different amounts. Frozen batteries rupture and break internally and externally. At the warmer end of this range, lack of winterization results in only a slight loss fmm operating efficiency. The commander may extend intervals during inactive periods, provided adequate preservation continues.
The time from initiating quick heat to achieving reliable starting temperatures can vary from a few minutes to one hour. Refer to the appropriate operator or higher-level manual for specific instructions. Operators must be very cautious when using equipment dm has been inactive for a long time.
Saturation reduces the insulating value 99-207 the handwear, causing cold injuries. Also, it is often necessary to fire several light-to medium-zone rounds prior to maximum propellant charges to avoid stressing the hydraulic recoil mechanisms of howitzers.
All-around vision is provided by a glass window on each side and to the rear. It then quickly loses its elasticity and becomes brittle.
A framework of poles erected around a vehicle can support the tarpaulin. Besides natural rubber, there are hundreds of rubber substitutes.
For more information on operations and maintenance of lead-acid storage batteries, refer to TM This blockage also can lead to premature igniter failure due to excessive start attempts. For example, if a NICAD battery is continually called upon to deliver an average of only 25 percent of its capacity before it is recharged, it will eventually “memorize” this fact and become incapable of supplying the remaining 70 percent capacity.
Also, personnel have a tendency to operate close to vehicles, which is tactically unwise. Understanding the specific impacts can assist a unit in planning measures to counter these effects. Severe cold adversely affects the capability of 9-027 unit to accomplish its mission.
Operation & Maintenance of Ordnance in Cold Weather FM 9 207
Listed below are several requirements that affect maintenance directly and require planning and preparation before a cold weather operation:. Commanders must place special emphasis on maintenance inspections.
Trailers and towed artillery pieces further reduce mobility.
If vehicles come into theater with temperate grade automatic transmission fluids and become cold-soaked when vehicle temperatures drop as low as the existing ambient temperaturesseals are likely to blow when transmissions are engaged.