Tools & Equipment: Hand & Power Tools: Using non-powered tools
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Topic IntroductionHelp

Using a gear puller

Summary
Gear and bearing pullers are designed for hundreds of applications. Their main purpose is to remove a component, such as a gear, pulley or bearing from a shaft, or to remove a shaft from inside a hole. The objective of this procedure is to show you how to select, install and use a gear puller to remove a pulley.

Part 1. Preparation and safety

Objective

Personal safety

Whenever you perform a task in the workshop you must use personal protective clothing and equipment that is appropriate for the task and which conforms to your local safety regulations and policies. Among other items, this may include:

If you are not certain what is appropriate or required, ask your supervisor.

Safety check

Points to note

Gear puller


Part 2: Step-by-step instruction

  1. Examine the gear puller
    Examine the gear puller you have selected for the job. Identify the jaws – there may be two or three of them, and they must fit the part you want to remove. The cross-arm enables you to adjust the diameter of the jaws. The forcing screw should fit snugly onto the part you’re removing. Finally, select the right size wrench to fit the nut on the end of the forcing screw.
  2. Adjust and fit the puller
    Adjust the jaws and cross-arms of the puller so that it fits tightly around the part to be removed. The arms of the jaws should be pulling against the component at close to right angles.
  3. Position the forcing screw
    Use the appropriate wrench to run the forcing screw down to touch the shaft. Check that the point of the forcing screw is centered on the shaft. If not, adjust the jaws and cross-arms until the point is in the center of the shaft.
  4. Tighten the forcing screw
    Tighten the forcing screw slowly and carefully onto the shaft. Check that the puller is not going to slip off center or off the pulley. Readjust the puller if necessary.
  5. Remove the part
    If the forcing screw and puller jaws remain in the correct position, tighten the forcing screw and pull the part off the shaft.