Need - Homemade gear puller

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  #1  
Old 07-06-13, 04:58 PM
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Need - Homemade gear puller

A small drive pinion gear on a front wheel axle of my Craftsman II Eager One self-propelled lawn mower is rusted and will not come loose. Any ideas to help free the gear - perhaps a homemade puller? Suggestions as to where to buy a cheap gear puller? The pinion gear is only 2" in diameter. I was thinking about smashing the darn thing and buying an new one for $3.99 at Sears, but every time I pick up a hammer, bad things happen and the cost go up!

Thanks in advance.
 
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Old 07-06-13, 05:14 PM
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Look in the plumbing dept at you local box store. They have valve stem pullers that will probably do the trick for you.

Home Depot - Steel Faucet Handle and Compression Sleeve Puller Kit customer reviews - product reviews - read top consumer ratings
 
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Old 07-06-13, 05:33 PM
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Many auto parts stores rent tools. Depending on what tools and supplies you have in your shop and your abilities you may be able to cobble up a reasonable facsimile of a gear puller. Some pictures of the job may help someone make a few suggestions.
 
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Old 07-06-13, 06:01 PM
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Thanks, I will.

I appreciate the quick reply.
 
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Old 07-06-13, 08:34 PM
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Have you tried heating it?
 
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Old 07-07-13, 05:07 AM
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No, but I have a small propane torch. I will give that a try during my next attempt.
 
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Old 07-07-13, 05:40 AM
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...... just make sure there aren't any plastic parts that can be damaged by heat transfer.
 
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Old 07-07-13, 12:10 PM
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I will delay "torching" the part. The dirt shield is plastic and will not survive the attempt to heat the gear. Buying a cheap gear puller is a better plan.

Great suggestion to include photos. The problem side is obvious.

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Old 07-07-13, 01:57 PM
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I'm confused, the first picture shows a nice clean gear of some sort to the left of the shaft and the second picture shows a cruddy gear to the right of the shaft. Are these two separate machines? The clean gear is obviously held on its shaft via the snap ring.
 
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Old 07-07-13, 02:02 PM
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I'm thinking it's pics of 2 different sides of the mower. I'd souse it good with PB Blaster or CRC and whack it with a hammer, repeating ever so often until it loosened up.
 
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Old 07-07-13, 02:17 PM
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Looking from the front of the mower, the clean side is right and the other left. I removed the retainer clip before I started attempting to remove the pinion gear. By the way, the right side is easily disassembled and reassembled.

This is what happens when the dust cover fails, the wheel teeth are destroyed and the gear gets no attention.
 
  #12  
Old 07-08-13, 08:53 AM
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Good news - the gear is loose!

My homemade "puller" was slipping so I kept modifying it until I got it to grip the gear teeth. A small notch in the fingers did the trick. Parts are ordered. I will soon be attacking the lawn! The photos begins with the good side and end with the wheel damage. I set the puller on the shaft to show how it was connected. Thanks to all who replied to this post.

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