- (1) To prevent piston rod lock nuts from becoming loose and allowing rods to drop when supporting a load, lock nuts must be secured to piston rods by a castellated nut and cotter-pin.
- (2) A clevis, "D" strap or other means must be used to prevent the hoist cylinder becoming detached from the hanger.
- (3) All air hoists must have their rated capacity posted on both the hoist and the jib or rail.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 17-16-132, § 296-78-820, filed 8/1/17, effective 9/1/17. Statutory Authority: RCW 49.17.040, 49.17.050 and 49.17.240. WSR 81-18-029 (Order 81-21), § 296-78-820, filed 8/27/81.]