4.6.2 Defects. Conformance to 3.3, 184.108.40.206, 3.6, 3.7, and 3.8 shall be determined by
examination for the defects listed in table IV.
4.6.3 Production break-in. To determine conformance to 3.3.3, the engine shall be
operated as specified herein. Any unsatisfactory operation or conditions which require correction
shall be corrected by the contractor before the engine is presented for acceptance.
220.127.116.11 Teardown inspection. At the conclusion of the break-in run, the contractor, in the
presence of the Government, shall disassemble and inspect the first 10 engines, and every second
engine of the next 10 of any contract except overlapping contracts. Disassembly shall be
accomplished to the extent required to perform the following inspection:
a. Oil contamination.
b. Dirt, chips, or foreign matter in the engine block, oil pan filters, or accessory drive
c. Main bearing bolt torque. 1/
d. Connecting rod bolt torque. 1/
e. Cylinder head bolt torque. 1/
f. Cylinder bore scuffing, scoring, galling, etc.
g. Piston scuffing and burning.
h. Correct valve adjustment.
i. Correct rack and governor linkage adjustment.
j. Missing parts.
k. Valves, valve train, and camshaft inspection.
l. Corrosion damage.
1/ Nuts and bolts listed by the manufacturer as requiring exceptions to standard bolt
and nut torque specifications.
Any engine not requiring replacement parts shall be reassembled and subjected to the acceptance
power check test only.
18.104.22.168.1 Corrections and re-assembly. Any engine requiring replacement parts shall be
reassembled and subjected to the break-in run and acceptance power check test.
4.6.4 Endurance. To determine conformance to 3.4.1 and 3.4.2 through 3.4.8, the
engine shall be subjected to the applicable test as follows.
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