Technical bulletins TB (series). 5-1175-1. Preventive maintenance services: Crane, revolving, crawler-mounted, gasoline, ¾-cubic-yard, 7-to 10-ton, class 3, with attachments, Thew-Lorain models L-40 and L-40A, with Chrysler C-36-520 or Waukesha 6-MZR engine; May 23, 1946.

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