StacksVerified U.S. regulatory reference

49 CFR §236.339

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Locking and connections shall be maintained so that, when a lever or latch is mechanically locked the following will be prevented:
  1. (a)Mechanical machine—(1) Latch-operated locking. Raising lever latch block so that bottom thereof is within three-eighths inch of top of quadrant.
    1. (2)Lever-operated locking. Moving lever latch block more than three-eighths inch on top of quadrant.
  2. (b)Electromechanical machine—(1) Lever moving in horizontal plant. Moving lever more than five-sixteenths inch when in normal position or more than nine-sixteenths inch when in reverse position.
    1. (2)Lever moving in arc. Moving lever more than 5 degrees.
  3. (c)Power machine—(1) Latch-operated locking. Raising lever latch block to that bottom thereof is within seven thirty-seconds inch of top of quadrant.
    1. (2)Lever moving in horizontal plane. Moving lever more than five-sixteenths inch when in normal position or more than nine-sixteenths inch when in reverse position.
    2. (3)Lever moving in arc. Moving lever more than 5 degrees.