JA-00467_SPRDL122R0027_Redacted.pdf

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Redacted Justification & Approval (J&A) Federal contract opportunity
Solicitation number
SRRDL1-22-R-0027
Issued by
Defense Logistics Agency Land and Maritime

About this file

This redacted justification and approval document is for a sole source award to procure connecting rods for AVDS-1790 2-Series diesel engines used in M88 recovery vehicles. The connecting rods are an integral component that transfers motion from the pistons to the crankshaft. Only two vendors, Fairlane Tool Company and L3 Technologies, have proven ability to manufacture connecting rods meeting NATO qualification standards on these engines. Qualifying a new vendor would require extensive testing costing over $755,500. The Defense Logistics Agency Land and Maritime awarded contract SPRDL1-23-C-0032 for an unknown amount to an unknown vendor on March 2, 2023 to procure these connecting rods.

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SPRDL1-22-R-0027 (JA-00467)

Previous J&A: SPRDL1-16-R-0166 services required by the agency are available from only one responsible source, or, for Department of Defense (DoD), National Aeronautics Space Administration (NASA), and the Coast Guard, from only one or a limited number of responsible sources, and no other type of supplies or services will satisfy agency requirements, full and open competition need not be provided for.”

5. Reason for Authority Cited: The connecting rods are an integral component of the Air Cooled, V-engine configuration, Diesel, Super turbocharged (AVDS) -1790 2-Series engines rotating assembly. There are 12 connecting rods within the AVDS-1790 2- Series engine. The connecting rods are steel I-beam forgings which 'connect' the piston to the crankshaft assembly and transfer the reciprocating motion generated by the piston to rotational motion of the crankshaft. During the combustion cycle, the forces imparted onto the piston are then transferred through the (quantity 12) connecting rods and ultimately to the crankshaft assembly giving the AVDS-1790 2-Series engine its power output capabilities.

Despite the existence of a complete TDP for the connecting rods, only the approved sources, Fairlane Tool Company and L3 Technologies, have proven the ability to manufacture the connecting rods which can successfully meet the North Atlantic Treaty Organization (NATO) requirement for successful completion of NATO Standard Engine Laboratory Test Allied Engineering Publication (AEP)-5, while operating on an AVDS- 1790 2-Series engine. This test is required for components that are critical for engine/vehicle operation. Malfunction of the AVDS-1790 2-Series diesel engine due to poorly manufactured connecting rods could result in significant loss of equipment, due to fire caused by a cracked engine block from a 'thrown' connecting rod as a result of structural failure or to inaccurate geometries of either the crankshaft journal or piston wrist-pin ends. Both failure modes will result in the M88 vehicle’s inability to move the crew to safety under power. The approved sources have proven that they are able to deliver connecting rods of sufficient quality in support of the AVDS-1790 2-Series diesel engines. If another possible source of supply for this item was identified, qualification testing would be required. The following costs were derived from historical vehicle testing efforts and similar reverse engineering efforts within the U.S. Government. A 400-hour NATO endurance test cost estimate breakdown is as follows:

Obtain sample set of quantity 24 connecting rods $5,500.00 Obtain 2 AVDS-1790 2-Series Engines for 400-hour dynamometer testing $200,000.00

Tear down and rebuild two AVDS-1790 2-series engines with prototype connecting rods: $100,000.00

Design activity: Prototyping, Integration, Test: $200,000.00 NATO 400-hour dyno test $250,000.00 Total: $755,500.00

File details come from the government source that posted it. Updated .