Prostar Hoist - Upper & Lower Hooks

Lightweight, quiet and portable: The CM Prostar electric chain motor with robust features is designed and built for the unique rigging needs encountered at small venues like theatres, hotels, exhibitions, and conferences.

KEY # PART # DESCRIPTION QTY
620-137 20650 Hook (Includes 620-138) 1
620-138 595522 Hook Latch Kit 1
620-139 20713K Hook Retainer Kit 1
620-146 20428K Chain Stop - Sure Stop Kit 1
620-156 20995B Hook Block - Single Chained 2
  20739 Hook Block - Double Chained 2
620-157 82554 Hook Block Screw - Single Chained 2
  920724 Hook Block Screw - Double Chained 2
620-159 23030 Hook (Includes 620-138) 1
  40618 Latchlok Hook 1
620-162 20652 Sheave Wheel - Double Chained (Includes 620-164) 1
620-163 20318 Sheave Wheel Shaft - Double Chained 1
620-164 88641 Sheave Wheel Bearing - Double Chained 1
620-165 88639 Sheave Wheel Thrust Washer - Double Chained 2
620-196 940802 Hook Block Screw Lockwasher - Double Chained 2
  983544 Hook Block Screw Lockwasher - Single Chained 2
620-198 82638 Hook Block Screw Nut (Single Chained) 2

Hook Inspection

Any hook that is twisted or has excessive throat opening indicates abuse or overloading of the unit. Other load-sustaining components of the hoist should be inspected for damage.

Hooks damaged from chemicals, deformations or cracks or with over 10° twist from the plane of the unbent hook or excessive opening (greater than 1-1/8” (28.5mm)) must be replaced.

On latch type hooks, check to make sure that the latch is not damaged or bent. Also, make sure it operates properly with sufficient spring pressure to keep the latch tightly against the tip of the hook and allow the latch to spring back to the tip when released. If the latch does not operate properly. It should be replaced.