Class repairs

Discussion in '2-8-0 Consolidation' started by Larry F. (Larry Fey RIP 10/20/2023), Aug 26, 2015.

  1. I've been curious about something I've read here and there; when they talk of engine terminals and shops in steam days there is mention that a particular shop can handle class 3, 4, or 5 repairs....what does each class signify? I assume class 5 being a heavy repair. Thanks. Larry F.
  2. Karl

    Karl 2008 Engineer of the Year Supporter

    From the Locomotive Cyclopedia
    Class 1: New Boiler or back end, flues, new or reset
    Class 2: New firebox, one or more shell course; or roof sheet, flues new or reset; tires turned or new
    Class 3: Flues all new or reset (superheater flues may be excepted), necessary repairs to firebox and boiler, tires turned or new
    Class 4: Flues part of full set, light repairs to boiler, machinery and tender
    Class 5: Tires turned or new, necessary repairs to boiler, machinery, and tender; one or more pairs of driving wheel bearings refitted

    All classes include general repairs to machinery: driving wheels removed, tires turned or changed, journals turned, and all driving boxes and rods overhauled and bearings refitted, and all other repairs necessary for full term service.
    Last edited by a moderator: Aug 27, 2015
  3. TAG1014 (Tom Galbraith RIP 7/15/2020)

    TAG1014 (Tom Galbraith RIP 7/15/2020) Passed Away July 15, 2020 Supporter

    THANKS Karl !--I've read about "class" repairs for years and never ran across a really clear explanation until now.

    Tom G.
  4. Once again, thank you Karl. Larry F.
  5. Frisco1515

    Frisco1515 Frisco1515

    Which locations of Frisco shops could make all Classes of repairs to steam locos? Thanks, Frisco 1515
  6. Karl

    Karl 2008 Engineer of the Year Supporter

    The question that asks at what locations could all class repairs, one through five, be performed, might also need also to ask about actual practice vs capability. The attached map was published for the investor representatives, who rode the Investors’ Special of 1955. The map shows the end of steam locations that had mechanical forces dedicated to steam locomotive maintenance. While it doesn’t answer the question, it does show where the Frisco tended to its steam locomotive fleet. Some of the locations shown, such as Beaumont, KS, did not have the required facilities (drop pit) to effect any “class repairs”, and these forces would have performed only minor mechanical repairs and servicing to keep things running. The "subdivision" roundhouses such as Chaffee, Ft Scott, Ft Smith, et al, had drop pits and could handle Class 3 - Class 5 repairs. The question then becomes what was the Frisco’s practice. Just because the capability to drop drivers existed at a given location didn’t necessarily mean that the Frisco performed Class 3 – Class 5 at these locations. Off the top of my head, I know of two locations that had boiler shops, the West Shops in Springfield and 19[SUP]th[/SUP] Street in Kansas City. These two locations would be likely candidates as locations, which could perform Class 1 – Class 5 repairs. Again, actual practice may have been different. If I had to bet the farm, I wager that the West Shops handled most of the Class 1 and Class 2 repairs.

    It's an interesting question, that requires further research.

    Attached Files:

    Last edited: Sep 30, 2019
  7. John Sanders

    John Sanders Member

    Hi Karl,

    Were these classes established by the ICC as part of the valuation process? Presumably they applied to most/all railroads if they were established by the government.

    John Sanders
  8. Karl

    Karl 2008 Engineer of the Year Supporter

    The Repair Classes were established by the USRA during 1918.

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