Model #31511631 CRAFTSMAN Sander

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Question and Answers

Q:

Can i Oil an old electric sander?

A:

Managemylife.com is a great place to find the answers to just about anything, especially on appliances. I'm sorry about the difficulties your having with your Sears Sander. I did some research for you at Managemylife.com and found an expert answer to a similar question that I hope will help until your expert can answer your specific question. I attached the link below.

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James -
July 26, 2011
A:

Thank you for your question.

Having a bearing squealing on the sander can be annoying and a concern.

There are four bearings on this model.

Two bearings for the motor and two bearings for the drive system.

These are all lifetime lubricated bearings but the grease can dry up and the bearing will fail.

The only way to know for sure which bearing is the problem is to take the sander apart.

If you feel comfortable with taking the sander apart to look for the bad bearing I will help you.

I feel that I have to tell you that because of the age of the sander some of the bearings are no longer available, so this may be a deciding factor in whether you take the sander apart. .

Please reply and I will be glad to help you further.

Thank you for using Manage My Life

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Sam A -
Sears Technician
July 27, 2011
A:

Does the same hold true for a Craftsman (Model 315.11720)? If so, why is there specific instructions on the side plate that states " Oil before sanding with two drops of Sears electrical motor oil in oil hole of front bearing". I do not see an oil hole on front bearing.

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Phillip -
September 02, 2011
A:

Sometimes they will make changes to the products and they do not change the manual. I have seen that many times over the years when they decide to make a production change. I would just put a drop of oil on the front roller bearings. On most of these older tools the idler bearings were sleeve bronze bearings and needed a drop or two of oil so as not to wear out so quickly. Sam A.

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Sam A -
Sears Technician
September 02, 2011
A:

Sam, I have a 31522420 belt sander a 31527981 saber saw and a 31525990 orbital sander. I know where to oil the belt sander but don't know what KIND of oil - weight, 3 in 1 ??? The saber saw works fine but I am sure it needs either grease or oil. The hand knob unscrews and it appears as though someone has put grease inside that hole in the past (the tools were left to me by a deceased friend). The orbital sander is squealing when it first starts but then smooths out. I put some 3in1 oil in the handle hole and it seemed to help for a while. Manuals? Squealing?

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sj -
September 18, 2012
A:

Thank you for your questions on the very old power tools that your have received from a friend. The belt sander has ball bearings for the motor but sleeve bearings on the front idler roller and you could put some plain 30 weight oil on the roller axle. On the sabre saw you can remove the front cover and put standard grease in and around the gears and slide bar. I cannot see any information on the orbital sander and there are no parts available for this tool. I hope this will help. Sam A.

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Sam A -
Sears Technician
September 19, 2012
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Q:

The sandpaper holder spring has fallen off on my sander, model 315.11631. How do I reinstall it?

A:

I am sending you an image of the instructions for replacing the sandpaper on a sander similar to yours. This information came from the owners manual. You can download or print the owners manual free at [www.managemylife.com].

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Jimmy K -
Sears Technician
December 07, 2009