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hgmckay
Joined: 23 May 2006
Posts: 397
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 Posted: Thu Oct 26, 2017 1:51 pm Post subject: Allegro 2000 - Front Gear Wheel Bearing Replacement |
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Gentlemen,
I found that I needed to replace the two wheel bearings in the front landing gear wheel of my Allegro 2000. The ball bearings were running rough. The rim is a split rim so I removed the six bolts and the tire itself. I am working with the half of the rim containing the two bearings. I tried to press out the bearings but they would not budge. That may have been a mistake. Now I am not sure how to removed the bearings. Attached is my cross section sketch of what I think is the bearing housing. There may be a bearing seat behind each bearing that fixes the position of each bearing. If so, you can’t visually see it. I also don’t know why there is a loose sleeve for the axel between the two bearings? Has anyone ever had to remove or replace the front wheel bearings on an Allegro 2000? If so, how is it done? Also, is the wheel itself cast aluminum or steel?
Hugh G. McKay III, P.E. Fellow, L.M. ASCE
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
email hgmckay(at)bellsouth.net
http://www.wwegeo.com
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N456TS
Joined: 15 Aug 2015
Posts: 70
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| Posted: Tue Oct 31, 2017 7:23 am Post subject: Re: Allegro 2000 - Front Gear Wheel Bearing Replacement |
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It appears we might have different wheels, so I can't help much. Mine are Matco with 1630-2RS bearings. You split the wheel and push the bearings from the inside out. Being that you have snap rings retaining the bearings, I would suspect that is the exit path for the bearing. It should come out with no issue using a small arbor press.
| | - The Matronics Allegro-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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ledson
Joined: 29 Apr 2009
Posts: 62
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| Posted: Tue Oct 31, 2017 9:44 am Post subject: Allegro 2000 - Front Gear Wheel Bearing Replacement |
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I replaced the main gear wheel bearing last year. Both the mains and the nose wheel are the same and the bearings are the same. There was no need to dismount the tire or split the rim. I simply removed the snap rings and using a small brass drift, drove the bearing out from the opposite side.
To install the replacement bearing, place the wheel on a flat surface, position the bearing and drive it in until seated with a socket that is slightly smaller that the bearing bore. Once fully seated reinstall the snap ring. And your good to go.
Larry Edson
N4362C
Sent from my iPad
| Quote: | On Oct 31, 2017, at 11:23 AM, N456TS <bottleworksnet(at)gmail.com> wrote:
It appears we might have different wheels, so I can't help much. Mine are Matco with 1630-2RS bearings. You split the wheel and push the bearings from the inside out. Being that you have snap rings retaining the bearings, I would suspect that is the exit path for the bearing. It should come out with no issue using a small arbor press.
--------
N456TS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=474001#474001
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hgmckay
Joined: 23 May 2006
Posts: 397
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| Posted: Tue Oct 31, 2017 12:04 pm Post subject: Allegro 2000 - Front Gear Wheel Bearing Replacement |
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Bearings are out! No problem once I knew what to do.
Hugh G. McKay III, P.E. Fellow, L.M. ASCE
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
email hgmckay(at)bellsouth.net
http://www.wwegeo.com
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| | - The Matronics Allegro-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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N456TS
Joined: 15 Aug 2015
Posts: 70
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| Posted: Tue Oct 31, 2017 12:43 pm Post subject: Re: Allegro 2000 - Front Gear Wheel Bearing Replacement |
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| ledson wrote: | | I replaced the main gear wheel bearing last year. Both the mains and the nose wheel are the same and the bearings are the same. |
Interesting. You've got sealed bearings on the main axles? On the mains, I've got tapered bearings which you preload and grease the same as automotive applications. On the front are standard 1630 sealed bearings. Any idea what diameter axles are on your Allegro? Mine has 3/4" for the front, but I believe the mains are larger. I would guess 1" shafts, but I would have to measure to confirm.
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hgmckay
Joined: 23 May 2006
Posts: 397
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| Posted: Tue Oct 31, 2017 2:59 pm Post subject: Allegro 2000 - Front Gear Wheel Bearing Replacement |
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N456TS,
All of the wheel bearings on my Allegro 2000 are the same. They are sealed
radial ball bearings having the following dimensions:
Bearing O.D. = 42 mm
Bearing I.D. = 20 mm = shaft O.D.
Bearing width = 12 mm
The bearings can be found on line at www.thebigbearingstore.com
they are specified as 6004-ZZ
Hugh G. McKay III, P.E. Fellow, L.M. ASCE
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
email hgmckay(at)bellsouth.net
http://www.wwegeo.com
--
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