srt520

[john]

I have a DW705 Type 5 the bearing (part 10) blew up and I need to replace it in order to do so it says I need srt 520 to remove it, I am assuming it is a gear puller but i have no idea where i can find it so that I can pull it off without damaging the armature or motor.

[Mark]

Hi John,

I am not sure what the srt 520 is that you referred to. I can tell you how we remove the fan end armature bearing here in our shop. The issue that makes removing the bearing problematic is that there is not enough room between the bearing and the cooling fan to fit a traditional bearing puller. The method to remove the bearing that we have used with great success is to use a bearing seperator such as the one at the following link...

http://www.ereplacementparts.com/bearing-separator-p-205782.html

and a two arm gear puller. The bearing separator is thin enough to slide in between the bearing and the fan. With the separator in place you can then attach a two post gear puller to the separator. The puller will lift the separator which in turn will pull the bearing. If you have access to an arbor press you could use it in place of the two jaw gear puller.

The armature bearing is part #330003-13 and is available from http://www.ereplacementparts.com.

Good luck with your repair!

-Mark

[Don]

I was able to pop mine off by gently prying on each side with two screwdrivers. I kept working my way around the edges. Don't put too much pressure or you will destroy the bearing.