TM 5-5420-278-24&P0016 000016 00-1UNIT MAINTENANCE INSTRUCTIONSIMPROVED RIBBON BRIDGE (IRB)RAMP BAY M16NSN 5420-01-470-5825 P/N 12478918;INTERIOR BAY M17NSN 5420-01-470-5824 P/N 12478919.LUBRICATION INSTRUCTIONSGENERALThis lubrication instruction is for unit maintenance and provides the lubrication requirements needed tosupport the Improved Ribbon Bridge (IRB). Included are Fluid Capacities, Lubricant Requirements,Lubrication Intervals, and Locations for lubricating the bridge.SERVICE INTERVALSService intervals are for normal operation of the bridge in moderate temperatures, humidity, andatmospheric conditions. The intervals are hard-time intervals which are performed in accordance with thebridge’s age, calendar time, or usage. The hard-time intervals are based on months of calendar times. Anexample of calendar intervals is: semiannually (every 6 months), annually (every 12 months), or biannually(every 24 months). The lubrication for the bridge is to be performed at whichever interval occurs.For equipment under manufacturer’s warranty, hard-time fluid service intervals shall be followed. Hard-time intervals may be shortened if lubricants are used under adverse conditions, including longer-than-usual operation. Hard-time intervals may be extended during periods of low activity, although adequatepreservation precautions must be taken. Lubricants are shown in table 3, and intervals and locations are shown in tables 1, 2, 4, and 5.CORROSION PREVENTION AND CONTROL (CPC)Corrosion prevention and control (CPC) of Army materiel is a continuing concern. It is important thatcorrosion problems are reported so they can be corrected and improvements can be made to prevent futureproblems.While corrosion is typically associated with rusting of metals, it can also include deterioration of othermaterials, such as rubber and plastic. Unusual cracking, softening, swelling, or breaking of these materialsmay be a corrosion problem.If a corrosion problem is identified, it can be reported using Standard Form 368, Product QualityDeficiency Report. Use of key words such as corrosion, rust, deterioration, or cracking will ensure that theinformation is identified as a CPC problem.The form should be submitted to the address specified in DA Pam 738-750.FILTERSFilters shall be changed as applicable, when:1. They are known to be contaminated or clogged.2. Prescribed hard-time intervals are reached.
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