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|  MIL-E-23457B(SHIPS)
evidence which would indicate the effect of this cavitation erosion problem on the life and
reliability of the engine and its parts in Navy marine service. The cavitation erosion
problem if evidenced, will be considered sufficiently severe to cause rejection of the engine
if, in the opinion of NAVSEC, based on evidence presented by the engine manufacturer and
observed in the test engine that cavitation erosion would reduce the time between overhaul
of the engine in our service as expected from normal wear, or cause the cylinder block or
frame to be unuseable after less than four major overhauls.
4.4.4.1 Special tools furnished with the engines shall be tried out on the engine
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during the post trial examination, before examination can be considered complete.
4.4.5 Post first article report. The supplier shall prepare a post first article
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report in accordance with the data ordering document included in the contract or order
(see 6.2.2). The complete first unit test-report shall include the following data:
Analysis of diesel fuel (see 4.4.1.5).
(a)
Compression and firing pressures (see 4.4.2.2.1).
(b)
Results of piping pressure test (see 4.4.2.2.2).
(c)
Endurance test fuel consumption and exhaust gas temperatures (see 4.4.2.2.3).
(d)
Lubricating oil analysis (see 4.4.2.2.5).
(e)
Fuel consumption test results (see 4.4.2.3).
(f)
Air requirements for cold start (see 4.4.2.4).
(g)
(h)
Air requirements for normal start (see 4.4.2.5.1).
Regulating and overspeed governor data (see 4.4.2.6 and 4.4.2.7).
(i)
Time and air requirements for reversing test (see 4.4.2.8).
(j)
Results of crankcase integrity test (see 4.4.2.10).
(k)
Results of air receiver integrity test (see 4.4.2.11).
(l)
Results of explosion relief valve test (see 4.4.2.12.1).
(m)
Spectrometric analysis (see 4.4.3.3).
(n)
Results of post first article examination (see 4.4.4) .
(o)
Final acceptance will be made by NAVSEC, Hyattsville, Maryland.
4.5 Quality conformance inspection. Production engines, duplicates of one that has
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passed the first article tests (see 4.4), shall be tested as specified in 4.5.1 and 4.5.2.
For these tests, the supplier may use his standard commercial test cells, detached acces-
sories, diesel fuel, lubricating oil, coolants, and instrumentation.
4.5.1 Performance test. Each variable or constant speed engine shall be operated for
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one test cycle in accordance with 4.4.2.2. The engine shall be capable of maintaining the
following:
(a) Specified loads and speeds.
(b) Pressures and temperatures specified by the engine manufacturer in the
instruction manual.
Smoke emission limitations specified in 3.8.6.2.
(c)
4.5.2 Governor test. The response of regulating and overspeed governors shall be
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tested as specified in 4.4.2.6 and 4.4.2.7.
4.6 Auxiliary engines shall also be tested in accordance with the combined unit test
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specifications.
4.7 Inspection of preparation for delivery. Preservation-packaging, packing, and
marking shall be inspected for compliance with section 5 of this document.
PREPARATION FOR DELIVERY
5.
(The preparation for delivery requirements specified herein apply only for direct
Government procurements. For the extent of applicability of the preparation for delivery
requirements of referenced documents listed in section 2, see 6.6.)
5.1 Preservation-packaging. Preservation-packaging shall be level A or C, as
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specified (see 6.2.1).
5.1.1 Level A.
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5.1.1.1 Basic engine unit. The basic engine unit including driven equipment shall be
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cleaned and preserved in accordance with type V, method II, of MIL-E-10062 to the extent
specified. Preservatives identified by "P numbers" in this specification shall conform to
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