Having trouble with your Festool power tool? Well, we're here to help you. Before posting to the forum, give us a chance to diagnose and resolve your issue. In the U.S. and Canada, call us toll-free at 888-337-8600 on Monday-Friday between 8a-5p EST or contact us via email at service@festoolusa.com. For other countries, please visit http://www.festool.com for contact information for your local Festool service department.

Author Topic: Replacing the Armature in a TS-55  (Read 3340 times)

0 Members and 1 Guest are viewing this topic.

Offline Sinorm

  • Posts: 5
Replacing the Armature in a TS-55
« on: November 11, 2016, 05:23 PM »
Yesterday I was cutting through some plywood and smoke started pouring out of my TS-55. After disassembling the tool, it was obvious that the armature was ruined (and from searching these message boards, it is clear that this is a common failure). Unfortunately my warranty ran out a few months ago so I ordered the parts instead of sending the tool in for repair.

I've successfully exposed the armature, but I can't figure out how to remove it from the tool so I can install the replacement. There aren't any fasteners that I can see, so I'm assuming the armature is press-fit into the housing? It seems like I'll have to press it back out somehow, pushing from the blade side of the saw on the small exposed end of the armature shaft.

Has anyone replaced their armature before? Any recommended techniques or is there something I'm missing?
« Last Edit: November 11, 2016, 05:34 PM by Sinorm »

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline Peter Halle

  • Global Moderator
  • *
  • Posts: 11080
  • Another Avatar Coming Soon
Re: Replacing the Armature in a TS-55
« Reply #1 on: November 11, 2016, 07:28 PM »
Sorry for your situation.  You should contact FESTOOL about this.

RegArding your comment about reading that an armature failure in a TS 55 is common failure I can only offer that perhaps you might have gotten tools mistaken and were thinking about the Kapex. 

Peter

Offline antss

  • Posts: 1453
Re: Replacing the Armature in a TS-55
« Reply #2 on: November 11, 2016, 07:32 PM »
You need to separate the armature / fan from the housing and then use a bearing puller (probably) to remove the fan. 

I'd go ahead and replace the bearings while you're in there too.  Cheap insurance.

You may want to give FT a call on Monday and talk to service.  I'll bet you a dollar or a donut that they'll talk you through the procedure.  I had to replace something minor on an old AT saw 15 years ago and couldn't figure it out so I called and they pointed me in the right direction.  It required a particular sized brass drift in a position I just didn't see.

Offline Sinorm

  • Posts: 5
Re: Replacing the Armature in a TS-55
« Reply #3 on: November 29, 2016, 08:04 PM »
I was able to complete the repair and my saw is up and running again. I ensured the back of the gearbox was well-supported and then used a hammer and punch on the end of the armature shaft to remove the armature. It took some fairly serious hammering, but I was able to get it removed without any damage. After you've removed the shaft the fan slides right off, no bearing puller needed.

Installation of the new armature was easy enough. I did replace the end bearing so I just hammered the new bearing onto the shaft instead of trying to remove the old bearing. Then I ensured the blade-side of the housing was well-supported and proceeded to hammer away on the new armature until it was fully seated in the bearing. Then I just had to reassemble the saw and get back to cutting.


Offline antss

  • Posts: 1453
Re: Replacing the Armature in a TS-55
« Reply #4 on: November 29, 2016, 08:38 PM »
Glad to hear you sorted it.

Nothing beats the feeling of pounding on your $500 saw with a big ol hammer and a drift.  [scared] [scared] [scared] 

Offline Birdhunter

  • Posts: 2023
  • Woodworker, Sportsman, Retired
Re: Replacing the Armature in a TS-55
« Reply #5 on: November 29, 2016, 08:42 PM »
I admire your ability to fix the problem, but why not ship the saw to Festool?
Birdhunter

Offline antss

  • Posts: 1453
Re: Replacing the Armature in a TS-55
« Reply #6 on: November 29, 2016, 09:39 PM »
I admire your ability to fix the problem, but why not ship the saw to Festool?


"Unfortunately my warranty ran out a few months ago "


Shipping both ways likely to run $50-$60 alone plus insurance, plus parts min. $125, plus labor and one is looking at a pretty sizable investment on a $300-$400 saw.
« Last Edit: November 29, 2016, 09:43 PM by antss »

Offline Alex

  • Posts: 5573
Re: Replacing the Armature in a TS-55
« Reply #7 on: November 30, 2016, 03:23 AM »
I admire your ability to fix the problem, but why not ship the saw to Festool?

If you're comfortable doing your own repairs, why waste a lot of money on shipping and labour?

Offline mwahaha

  • Posts: 110
Re: Replacing the Armature in a TS-55
« Reply #8 on: November 30, 2016, 02:48 PM »
You could have probably used a heat gun to heat the alloy and the bearing would have come out a lot easier. The same trick is used to get pressed in  bearings out of alloy bike hubs.
Makin' chips since ages ago