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LG08 bushing replacement

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nimbusaviation(at)yahoo.c
Guest

Posted: Wed May 03, 2017 9:51 am Post subject: LG08 bushing replacement

Last weekend we renewed the two bushes on the shock absorber top plate LG05 - something of a struggle but doable in situ. We still have a little play in the 4 bushes of LG08, of interest more on the starboard side, and these will need replacement soon also.

Has anyone developed a procedure for this task, preferably working with the LG08 in place, without having to tear down the whole gear assembly? 

These bushings are understood to be secured with locktite, so we assume some heat and a suitably contrived 'special tooling' will accomplish the task.

All pointers welcome.



Best,

Glenn Rainey / Martin Burns

G-OJHL

Classic monowheel

Cumbernauld

Scotlands

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pete(at)lawless.info
Guest

Posted: Wed May 03, 2017 10:50 am Post subject: LG08 bushing replacement

Hi Glenn



I have just done all my bushes and replaced the shockers and pins.  I 

could not imagine doing it in situ! I found it difficult enough to get 

the bits back in place having assembled them on the bench.  Must have 

been much more flexible with eyes that did not need glasses 18 years ago.



By the way if you do take the shockers and the steel plates LG05/Lg08 

out they are handed when you refit them.  If you do it the way I did 

first time the gear will not come up!  It does show it in the diagram 

but we could find no specific mention in the manual.



The bushes just pressed out quite easily with a nut, bolt and small 

washer.  No heat required.



Regards



Pete



PS Carried on and rebuilt the outriggers, finished yesterday.

On 03/05/17 18:50, glenn rainey wrote:

 	  Quote: 	
		   



 Last weekend we renewed the two bushes on the shock absorber top plate LG05 - something of a struggle but doable in situ. We still have a little play in the 4 bushes of LG08, of interest more on the starboard side, and these will need replacement soon also.

 Has anyone developed a procedure for this task, preferably working with the LG08 in place, without having to tear down the whole gear assembly?

 These bushings are understood to be secured with locktite, so we assume some heat and a suitably contrived 'special tooling' will accomplish the task.

 All pointers welcome.



 Best,

 Glenn Rainey / Martin Burns

 G-OJHL

 Classic monowheel

 Cumbernauld

 Scotlands

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dg.watts(at)talktalk.net
Guest

Posted: Wed May 03, 2017 12:09 pm Post subject: LG08 bushing replacement

Hi Glen,

Without checking through my log books, I think I have changed all he bushes three times now and they will need doing again in the not too distant future (I do have over 2,300 hours on the aircraft now).

On each occasion I have done the job all in situ and I have managed to do it with a little tool press I made up comprising a bolt, nut, washers and a length of tube the same size as the bush. I don't use heat, just press the old bush out. Another mono in the same hangar as done the job once following my advice.

It's a really horrible job working upside down at virtually full arms length but ultimately it is manageable.

Dave Watts

G-BXDY Classic Monowheel 2,365 hours

 	  Quote: 	
		   On 3 May 2017, at 19:44, Pete Lawless <pete(at)lawless.info> wrote:

 Hi Glenn

 I have just done all my bushes and replaced the shockers and pins.  I could not imagine doing it in situ! I found it difficult enough to get the bits back in place having assembled them on the bench.  Must have been much more flexible with eyes that did not need glasses 18 years ago.

 By the way if you do take the shockers and the steel plates LG05/Lg08 out they are handed when you refit them.  If you do it the way I did first time the gear will not come up!  It does show it in the diagram but we could find no specific mention in the manual.

 The bushes just pressed out quite easily with a nut, bolt and small washer.  No heat required.

 Regards

 Pete

 PS Carried on and rebuilt the outriggers, finished yesterday.

> On 03/05/17 18:50, glenn rainey wrote:

> 

> 

> Last weekend we renewed the two bushes on the shock absorber top plate LG05 - something of a struggle but doable in situ. We still have a little play in the 4 bushes of LG08, of interest more on the starboard side, and these will need replacement soon also.

> Has anyone developed a procedure for this task, preferably working with the LG08 in place, without having to tear down the whole gear assembly?

> These bushings are understood to be secured with locktite, so we assume some heat and a suitably contrived 'special tooling' will accomplish the task.

> All pointers welcome.

> 

> Best,

> Glenn Rainey / Martin Burns

> G-OJHL

> Classic monowheel

> Cumbernauld

> Scotlands

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Remi Guerner

Joined: 14 Dec 2010
Posts: 284

Posted: Thu May 04, 2017 1:31 am Post subject: Re: LG08 bushing replacement

I did replace those bushing for the first time one month ago. I did that in situ using the method and tooling described in an article written by Dave Bossomworth which was published in EF a few years ago. It takes time but it is quite easy.

Remi Guerner

F-PGKL Monowheel, 1400 hours

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