final drive gear bearing

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final drive gear bearing

Post  Kevster on Sun 31 May 2015, 1:07 am

Hi all,
regarding the large bearing for the final drive gear,its seems to me it should be loctited
to the gear casting so it only rotates on the axle,the instructions make no mention
of loctite, just wondered what others have done.
noticed with the wheel off there is a lot of free play wobble in the final gear ,grabbed with both hands I can rock it a good 4mm,is this the norm for everyone ,the engine hasnt moved yet and that kind of play
is there already which is a bit worrying for the long term .
any thoughts welcome
thanks
Kev

Kevster

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Location : Hertfordshire 4 inch; DCC road loco
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Bush

Post  Steve Traill on Mon 01 Jun 2015, 7:56 am

The bush should be locktited to the gear so the axle rotates within it. No bush works on both surfaces! The instructions are silent on this point.

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Re: final drive gear bearing

Post  Kevster on Mon 01 Jun 2015, 10:08 am

Thanks Steve,
I thought that is the way to go ,I wonder how many have followed the instructions
and left out the loctite.

Kev

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Re: final drive gear bearing

Post  Tim Watson on Mon 01 Jun 2015, 10:48 am

Big mistake if you don't. It needs to be well fixed otherwise the bush will wear quickly. Also worth checking out how sweet the pinions run on the bevel. If they are clunky, have a look at my thread or Steve's.

Tim

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Re: final drive gear bearing

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