Author Topic: Help finding Kapex Armature Replacement Guide  (Read 2125 times)

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Online JimH2

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Help finding Kapex Armature Replacement Guide
« on: February 05, 2019, 06:37 PM »
Did some serious searching without any luck. I thought I had bookmarked in the event mine failed. Well it failed so I need it. Thx in advance.
« Last Edit: February 06, 2019, 09:43 AM by JimH2 »

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Online Peter Halle

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Re: Help find Kapex Armature Replacement Guide
« Reply #1 on: February 05, 2019, 06:59 PM »
Jim,

That thread was not deleted to the best of my knowledge.  We ran that one up the flagpole and Festool allowed it to stay.

Just like you I have searched and searched in areas you can't get to, but honestly I haven't found it yet.  If I do I will post a link here for you.

Peter

Offline neilc

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Re: Help find Kapex Armature Replacement Guide
« Reply #2 on: February 05, 2019, 07:17 PM »
here you go - see attached PDF




Online JimH2

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Re: Help find Kapex Armature Replacement Guide
« Reply #3 on: February 05, 2019, 10:47 PM »
I get the part where you pull the wires out of the plastic channel and then pull the motor housing upwards to separate it from the body. Then you use the screwdriver to separate the motor housing. Are you removing any wires to set it aside or leaving the wires in place why you work. It looks like other than the brushes all wires are still connected.

I am going to do it tomorrow night so I expect it will be more obvious when I get it apart.

Offline neilc

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Re: Help find Kapex Armature Replacement Guide
« Reply #4 on: February 05, 2019, 10:54 PM »
Jim - not sure if you are asking me or not...

I have not had to do the replacement personally.  I've had a Kapex since they were introduced with no problems.  But I did save the instructions just in case!

Good luck!

Offline GoingMyWay

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Re: Help find Kapex Armature Replacement Guide
« Reply #5 on: February 05, 2019, 11:03 PM »
Inquiring Minds Want to Know

TS55, CT26, RO150, CXS, ETS 150/3, ETS EC 150/5, MFT/3, TS75, DF500, DTS400, OF1400, CT SYS

Offline Cheese

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Re: Help find Kapex Armature Replacement Guide
« Reply #6 on: February 05, 2019, 11:37 PM »
Ya after 70 years of life....I’ve learned not to bookmark, but rather to save. Bookmarking just saves you a position in time that may or may not ever exist again.

I’ve saved this armature replacement as a .pdf.. I can also save it as a .jpg...I can also save it as a...well you get my drift. Don’t bookmark, save.

Online JimH2

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Re: Help find Kapex Armature Replacement Guide
« Reply #7 on: February 07, 2019, 07:04 AM »
Ya after 70 years of life....I’ve learned not to bookmark, but rather to save. Bookmarking just saves you a position in time that may or may not ever exist again.

I’ve saved this armature replacement as a .pdf.. I can also save it as a .jpg...I can also save it as a...well you get my drift. Don’t bookmark, save.
Thanks for the tip. I usually do this on the important things, but this one slipped through the cracks. It was more of a "if I don't read about it then it won't happen to mine". I bought mine within the 1st month or so of it being released in NA. It was long run. I'm not complaining other than it should not happen with the frequency we see on FOG.

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #8 on: February 07, 2019, 07:12 AM »
As for the guide it is important to note the required length of the T25 for removing the motor. I had a 4" screwdriver which I though was plenty. It gets very close, but the bottom of the handle hits the adjacent plastic protrusions on all four screw holes. Buying a driver bit later today so I can finish tonight. I 4" bit would work with the fast fix or an extension. I'm going with 6" to make sure I don't come up short. I'd also recommend just buying a Torx set instead of grinding down a flat screwdriver. They can be had cheaply at Harbor Freight or Amazon and Festool uses them in most if not all of their tools. I bought the set for removing the insert on the bottom of the OF1010. Way easier than futzing with the toolie.

Offline deepcreek

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Re: Help finding Kapex Armature Replacement Guide
« Reply #9 on: February 07, 2019, 09:06 AM »
These were included with a recent ad for a reconditioned Kapex in the classified section of FOG.

Seemed like good info to keep in case if I ever have to replace the armature, etc.

Festool service does a little more than just changing out the armature.

"Replaced armature and replaced field coil as a precaution...  Replaced brushes in accordance with new armature.  Burned in new parts in test mode."

« Last Edit: February 07, 2019, 09:08 AM by deepcreek »
Joe Adams
TimberFire Studio
Houston, Texas

http://www.facebook.com/timberfire

Offline Cheese

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Re: Help finding Kapex Armature Replacement Guide
« Reply #10 on: February 07, 2019, 12:32 PM »
These were included with a recent ad for a reconditioned Kapex in the classified section of FOG.

Along with what Joe has just posted, here are a couple of photos of what others have had replaced on their Kapex. I saved this info just in case.  [big grin]




Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #11 on: February 07, 2019, 09:20 PM »
Three things:
1. How do you remove the armature from the fan and end shield (large metal cover)? The armature is no coming loose from the fan.Looking down the shaft I can see what looks like a very small hex head screw. I don't want to make any moves until I get an opinion or two on this.

2. The Field assembly smells like a bar ashtray. I don't see any damage, but the smell is quite strong. It's $82.50 so I'd rather no just add in to my second parts order unless I need it. Again looking for an opinion on this.

3. Looks like I need some additional parts:
These parts were damaged/broken. I am surprised the air guide was damaged.
67 470952  Air guide washer (large piece of plastic) USA $3.55
74 470761 o-ring $.91

Not really necessary (maybe) but getting anyway
68 789575  Ball Bearing $4.21
57 457920 Tachometer Coil

I getting a spring plate which will hopefully fix the stickiness when rotating the base to select a different angle. It was smooth at first, but has gotten progressively worse. Sometimes it is near very tough to move.

Offline tjbnwi

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  • Cedar Tucky Indiana
Re: Help finding Kapex Armature Replacement Guide
« Reply #12 on: February 07, 2019, 09:35 PM »
The armature I received came with the fan, lower bearing and plate assembled.

It's a spare part, I'll take a picture of the assembly and box w/part number tomorrow.

The smell could be from the armature smoking.

Tom

Offline Cheese

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Re: Help finding Kapex Armature Replacement Guide
« Reply #13 on: February 07, 2019, 10:41 PM »
I think the armature comes as an assembly with the fan and everything else assembled...thus it’s outrageous price.

I’d pull the armature and put it somewhere by itself for a few days and then go back and sniff the field coils. My experience has been that if the part has been smoked it will never give up its stench.
However as Tom stated, if you separate the two elements from each other for a few days, the item that got smoked will still smell while the item that was just an accessory to the crime, will start to lose its stench.

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #14 on: February 08, 2019, 12:49 PM »
Any idea on how to separate armature from the rest of the parts?

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #15 on: February 08, 2019, 02:37 PM »
The fan is part of the armature and I tapped the armature/fan combo out of metal frame. Next issue is the ferule and bearing that are above the fan. See attached photo. How are these remove and what holds them in place?
« Last Edit: February 08, 2019, 02:46 PM by JimH2 »

Offline Svar

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Re: Help finding Kapex Armature Replacement Guide
« Reply #16 on: February 08, 2019, 02:42 PM »
The fan is part of the armature and I tapped the armature/fan combo out of metal frame. Next issue is the ferule and bearing that are above the fan. See attached photo. How are these remove and what holds them in place?
Typically just friction. You need a bearing puller. The bearing should be replaced.

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #17 on: February 08, 2019, 02:50 PM »
The bearing is 68. Not sure which of 71/72/73 I need based on the names and primitive drawing. They are not enough money to squabble over. I'm going to let the armature air out to see if it or the field assembly is what smells. Thanks to all for the guidance.

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #18 on: February 08, 2019, 02:53 PM »
The fan is part of the armature and I tapped the armature/fan combo out of metal frame. Next issue is the ferule and bearing that are above the fan. See attached photo. How are these remove and what holds them in place?
Typically just friction. You need a bearing puller. The bearing should be replaced.
Off to Harbor Freight to see if they have one. It looks the claws have to be small to fit under the bearing.

Is the ferule just holding it in place with friction and will pulling by the bearing hurt it. Does not matter in this case since I am ordering a new one anyway.

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #19 on: February 08, 2019, 03:08 PM »
Will this style work (looks like I would need something else to make it work):
https://www.amazon.com/Shankly-Bearing-Separator-30-50mm-1-18/dp/B07256PNXJ/ref=sr_1_1?keywords=small&qid=1549655963&s=Automotive&sr=1-1

or this (not sure if the lip will fit underneath the bearing)
https://www.amazon.com/dp/B071R2NX7L/ref=sspa_dk_hqp_detail_aax_0?th=1

Also will it pull the bearing and the sleeve up at the same time and do I need something to push the new ones back down with.



Offline Svar

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Re: Help finding Kapex Armature Replacement Guide
« Reply #20 on: February 08, 2019, 03:17 PM »
I used claw style puller before (FYI, no experience with Kapex). Once I had to re-grind the tips to make it grab right. I just assume the bearing is damaged after this, since you pull by the outer race of the bearing. When installing new one you push by the inner race (using a piece of pipe, for example), so its OK.
No experience with Shankly Bearing Separator. Looks clever.

If you are replacing the armature, why do you want to remove the bearing from it? Replace the whole thing including new bearing and fan.
« Last Edit: February 08, 2019, 03:24 PM by Svar »

Offline RKA

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Re: Help finding Kapex Armature Replacement Guide
« Reply #21 on: February 08, 2019, 04:04 PM »
Something that might be easier to find locally might be a wiper arm removal tool (the style with the claws)
-Raj

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #22 on: February 08, 2019, 04:28 PM »
Something that might be easier to find locally might be a wiper arm removal tool (the style with the claws)

Something like this: https://www.amazon.com/Heavy-Battery-Terminal-Wiper-Puller/dp/B078RNWMNZ/ref=sr_1_9?keywords=wiper+removal+tool&qid=1549661217&sr=8-9

Offline Cheese

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Re: Help finding Kapex Armature Replacement Guide
« Reply #23 on: February 08, 2019, 05:05 PM »
Something like this: https://www.amazon.com/Heavy-Battery-Terminal-Wiper-Puller/dp/B078RNWMNZ/ref=sr_1_9?keywords=wiper+removal+tool&qid=1549661217&sr=8-9

Yes, you need the thin flat jaws to get a good purchase on the bearing.

On other motorcycle/auto projects, I’ll use a 2- jaw bearing puller and a C-clamp over the end of the bearing puller jaws to direct pressure to the jaws and prevent them from pulling away from the bearing.

So snug up the BP, snug up the CC, then 1/4 turn more on the BP and resnug the CC. It’s the combination of slowly moving the bearing away from an interfering part so that the jaws of the BP will securely grip the outer race of the bearing.

On 3 jaw pullers I’ve replaced the C-clamp with my hand just to make sure the jaws don’t slip.

Added note: That battery terminal puller may not have enough reach, tough to tell. Check to make sure the puller has enough travel.

I’d take the Kapex armature to a NAPA store to help you sort out the puller you need.
« Last Edit: February 08, 2019, 05:13 PM by Cheese »

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #24 on: February 08, 2019, 07:12 PM »
Something like this: https://www.amazon.com/Heavy-Battery-Terminal-Wiper-Puller/dp/B078RNWMNZ/ref=sr_1_9?keywords=wiper+removal+tool&qid=1549661217&sr=8-9

Yes, you need the thin flat jaws to get a good purchase on the bearing.

On other motorcycle/auto projects, I’ll use a 2- jaw bearing puller and a C-clamp over the end of the bearing puller jaws to direct pressure to the jaws and prevent them from pulling away from the bearing.

So snug up the BP, snug up the CC, then 1/4 turn more on the BP and resnug the CC. It’s the combination of slowly moving the bearing away from an interfering part so that the jaws of the BP will securely grip the outer race of the bearing.

On 3 jaw pullers I’ve replaced the C-clamp with my hand just to make sure the jaws don’t slip.

Added note: That battery terminal puller may not have enough reach, tough to tell. Check to make sure the puller has enough travel.

I’d take the Kapex armature to a NAPA store to help you sort out the puller you need.

+1 on heading to Napa.

Offline tjbnwi

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  • Cedar Tucky Indiana
Re: Help finding Kapex Armature Replacement Guide
« Reply #25 on: February 08, 2019, 07:45 PM »
This is how the armature I received came. The bearings, housing, baffle and fan came pre installed.

Funny thing is, I have all the pullers and a press if I needed to swap parts.

Tom

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #26 on: February 08, 2019, 08:49 PM »
This is how the armature I received came. The bearings, housing, baffle and fan came pre installed.

Funny thing is, I have all the pullers and a press if I needed to swap parts.

Tom

I received what you have except I did not get the metal housing. I guess had I bought that and the bearing they would have assemble it for me.

Offline tjbnwi

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  • Cedar Tucky Indiana
Re: Help finding Kapex Armature Replacement Guide
« Reply #27 on: February 08, 2019, 08:51 PM »
This is how the armature I received came. The bearings, housing, baffle and fan came pre installed.

Funny thing is, I have all the pullers and a press if I needed to swap parts.

Tom

I received what you have except I did not get the metal housing. I guess had I bought that and the bearing they would have assemble it for me.

All I ordered was the armature (no bearings, no fan, no housing), it came as pictured in the box.

Tom

Offline ChuckM

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Re: Help finding Kapex Armature Replacement Guide
« Reply #28 on: February 08, 2019, 09:08 PM »
Perhaps Sedge should do a tip (5 mins long with one of the technicians from the Repair Dept) on how to replace the armature, step by step (no need to rush) for us Kapex owners!!! 8)

I heard that Festool has recently set up a service (repair?) centre in Canada.
« Last Edit: February 08, 2019, 09:10 PM by ChuckM »

Online JimH2

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Re: Help finding Kapex Armature Replacement Guide
« Reply #29 on: February 11, 2019, 09:52 PM »
I have folded and am building the Field Assembly. It and armature still stink after 3 days of being separated. Getting a new bearing and o-ring and some other small items so I am starting out new again. I'll post back after the second round of parts arrive.

I'm disappointed I did not get housing like @tjbnwi did.