[Collins] {Collins} KWS-1 Blower motor bearings

Sat Mar 22 16:00:08 EDT 2014

That is a versatile set, only a little overkill, but it sure will do the 
job safely and neatly.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.

On 3/22/2014 6:26 AM, antqradio at sbcglobal.net wrote:
> Try searching for "bearing splitter" instead of puller.  eBay item # 271373761062 is what I used to replace the bearings on the KWT-6 blower motor.  Worked well.
> Jim
>
>
> ________________________________
>   From: Dr. Gerald N. Johnson<geraldj at netins.net>
> To: collins at mailman.qth.net
> Sent: Friday, March 21, 2014 11:18 PM
> Subject: Re: [Collins] {Collins} KWS-1 Blower motor bearings
>
>
> That puller is way too big and made for pulling a sleeve bearing from a
> car engine flywheel. Its not made for pulling a ball bearing of any kind.
>
> www.ebay.com/itm/Bearing-Puller-Kirby-Vacuum-and-small-motors-T127-A-/171163789631?pt=US_Vacuum&hash=item27da28293f
> would be more like the right size, but its too short for the KWS-1 fan
> motor shaft. But with a bit of aluminum and steel bars it wouldn't be
> hard to make something like it.
>
> www.ebay.com/itm/Micro-Bearing-Extractor-Puller-Tool-Set-Kit-19-45mm-Deep-Version-BGS-/251457627375?pt=LH_DefaultDomain_0&hash=item3a8c0ae4ef
> might be small enough but is pricey.
>
> Some of these are closer to the right size:
> www.ebay.com/bhp/motor-gear-puller
>
> Here's a way to make a bearing puller, just needs to be adjusted to fit
> the KWS-1 motor dimensions.
> www.instructables.com/id/Cheap-and-Simple-Gear-Puller/
>
> Then this one from Micro Mark might be right, but I didn't get a picture:
> www.micromark.com/miniature-gear-and-wheel-puller-9and32-inch-9and16-inch-capacity,8011.html
>
> And there's this concept welded together from button head bolts that
> could be constructed from one steel bar and three button head bolts with
> enough length to reach each bearing. Just needs three tapped holes in
> the cross bar.
> makezine.com/2011/02/22/homebrewed-gear-puller/
>
> Google miniature gear puller for another few thousand ideas.
>
> 73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.
>
> On 3/21/2014 3:01 PM, Bill Riches wrote:
>> Hi Jerry - I dont think so.  It looks like the Jaws face inward instead of
>> outward.  You don't want to take any chances in buggering up the rotor.  I
>> would take it to a motor - starter repair shop and they could pull the
>> bearings off with the correct tool. You may have trouble separating the two
>> halves - the little rivets that hold the label are causing binding.  When
>> you pull it apart trim them flush on the inside and the whole mess will go
>> together ok.  Use a magic marker to mark stuff you take apart - that way you
>> can line up halves.  Be careful of the motor wires - feed them under the
>> bracket before pulling halves apart.  Good luck.  Oh - the ring on the
>> blower end that is fastened with 4 screws is also glued on.  Use a heat gun
>> to heat up the ring after removing the screws and once you start a small
>> screw driver under one edge it will pop off.  It must be real hot - be
>> careful.
>>
>> 73,
>>
>> Bill
>>
>> -----Original Message-----
>> From: Jerry [mailto:jsternmd at att.net]
>> Sent: Friday, March 21, 2014 1:13 PM
>> To: 'billriches'
>> Subject: RE: {Collins} KWS-1 Blower motor bearings
>>
>> Hi Bill
>>
>> I really need to do the same to my KWS-1.  Do you think this inexpensive
>> puller is large enough to do the job of pulling off the old bearings?
>>
>> http://www.ebay.com/itm/3-Jaw-Pilot-Bearing-Puller-Small-Bearing-Motor-Pulle
>> r-Gas-Engine-Hand-Gear-Pull-/231098557761?pt=US_Hand_Tools&hash=item35ce8c25
>> 41
>>
>> thanks
>>
>> 73 Jerry
>> K1JOS
>>
>> -----Original Message-----
>> From: Collins [mailto:collins-bounces+jsternmd=att.net at listserve.com] On
>> Behalf Of billriches
>> Sent: Friday, March 21, 2014 12:09
>> To: collins at listserve.com
>> Subject: {Collins} KWS-1 Blower motor bearings
>>
>> Greetings,
>>
>> On my butchered KWS-1 project - Fan sounded like a cement mixer - Ordered
>> Bearings # WC87938 from Johnson Bearing - 885-359-1049 for about $6.00 and
>> received them a few days later. Good instructions on W8ZR web site for
>> repair.  Old bearings were tight however small motor bearing puller worked
>> fine.  Cleaned up rotor, put in a baggie, and put in freezer for a few days.
>> New bearings arrived and since the shaft had shrunk from the cold just a
>> smidge, the new bearings slid right on the shaft.  Sounds much better- most
>> of the noise is from the fan as it is moving a bunch of air.
>>
>> 73,
>>
>> Bill, WA2DVU
>> Cape May
>>>
>
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