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  2. Pennsylvania Railroad class E2 - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad_class_E2

    All were similar in size and boiler capacity but differed in firebox type, valves and valve gear and cylinder diameter. Classes E2 and E3 were built simultaneously. Starting in 1916 a rebuilding program converted ninety class E2a, b, and c to class E7s by replacing slide valves with piston valves and increasing cylinder diameter from 20.5 to 22 ...

  3. Harbor Freight Tools - Wikipedia

    en.wikipedia.org/wiki/Harbor_Freight_Tools

    Harbor Freight Tools won a declassification of the class action; that is, the court found that all the individual situations were not similar enough to be judged as a single class, and that their claims would require an individual-by-individual inquiry, so the case could not be handled on a class basis.

  4. Leak-down tester - Wikipedia

    en.wikipedia.org/wiki/Leak-down_tester

    Compression tests should normally be done with all spark plugs removed to maximize cranking speed. Cranking compression is a dynamic test of the actual low-speed pumping action, where peak cylinder pressure is measured and stored. A compression tester. Leak-down testing is a static test. Leak-down tests cylinder leakage paths.

  5. Testing and inspection of diving cylinders - Wikipedia

    en.wikipedia.org/wiki/Testing_and_inspection_of...

    A hydrostatic test involves pressurising the cylinder to its test pressure (usually 5/3 or 3/2 of the working pressure) and measuring its volume before and after the test. A permanent increase in volume above the tolerated level means the cylinder fails the test and must be permanently removed from service. [3]: sect. 5.7.3

  6. Pennsylvania Railroad 7002 - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad_7002

    The E7s-class was created by replacing the slide valves above the cylinders on the E2a, E2b and E2c-classes with piston valves. Unlike the E2, the E2a, b, c and subsequent E7s class used Belpaire firebox instead of a "radial stay" firebox. The original No. 7002 was an E2-class locomotive built in August 1902 by the Pennsylvania Railroad's ...

  7. Today's Wordle Hint, Answer for #1270 on Tuesday, December 10 ...

    www.aol.com/todays-wordle-hint-answer-1270...

    Hints and the solution for today's Wordle on Tuesday, December 10.

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