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Gearbox shimming - feeler gauges

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Gearbox shimming - feeler gauges

Postby al pushpak » Thu Apr 19, 2018 1:08 pm

hi, hope this doesn't sound like a daft question but where abouts should the feeler gauges be placed on the endplate when measuring the endfloat on the large gear shim ? thanks for any info ;)
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Re: Gearbox shimming - feeler gauges

Postby Feersum Injun » Thu Apr 19, 2018 3:53 pm

ImageIMG_9267 by Nick Wilde, on Flickr
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Re: Gearbox shimming - feeler gauges

Postby CHRIS in MARGATE » Thu Apr 19, 2018 4:34 pm

I always make sure the hub is torqued.
The way I was taught to measure in my apprenticeship was to make sure the feeler guage one size below passes and the feeler guage one size above doesn't pass.
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Re: Gearbox shimming - feeler gauges

Postby al pushpak » Thu Apr 19, 2018 8:17 pm

Thanks for the info & the pic , much clearer than the one in Sticky manual, cheers ;)
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Re: Gearbox shimming - feeler gauges

Postby bazza3004 » Thu Apr 19, 2018 8:26 pm

Does the feelef need to be inserted right up to the shaft as iirc isnt there a 'boss' under the bearing seat or does it only need to go in 10mm or so . Sorry if this sounds like a dumb question.
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Re: Gearbox shimming - feeler gauges

Postby Feersum Injun » Thu Apr 19, 2018 10:45 pm

I believe so.... the shim should rotate, hence the gap. Otherwise you'd be measuring from the shim to the plate and the gap would be way to big...
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Re: Gearbox shimming - feeler gauges

Postby Feersum Injun » Thu Apr 19, 2018 10:47 pm

Also make sure you use nuts and torque them unlike in my photo...!!!
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Re: Gearbox shimming - feeler gauges

Postby bazza3004 » Fri Apr 20, 2018 1:24 pm

Thank you
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