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Can i get my Bushings out of my gearbox?


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Old 02-17-2017, 03:08 PM   #1
Zioux
 
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Default Can i get my Bushings out of my gearbox?

Can i get my bushings out of my gearbox?
- I used epoxy to glue them in, so i'm actually a little scared of knocking them out, because i know epoxy isn't easy at all to break..

Hope you can tell how i should do..

- Zioux



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Old 02-17-2017, 03:32 PM   #2
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should be fine - I have JB Welded some but came out ok

place the box on you lap or a soft matt/surface to absorb some of the impact
find something correct size to drift out the bushing - that is the trick
a small electrican's screw driver, an old spur gear works well too

something that fits inside the 3mm but will push the bushing out level

tap not wallop the thing and she should come out after a few taps
the soft area just absorbs some impact
don't wallop on hard surface or you can damage the box - even crack it in rare instances

if still no joy and wishing to strip whole box - chuck it in warm water
but shouldn't need to it should tap out ok as long as you are careful
just tap it out on your lap with a correctly fitting tool
(try not to spear yourself if using a screwdriver on your lap)

If you got a lot of epoxy around the bushing inside & outside the box
then cut/break/chip away this pool of epoxy with a scalpel or something
then it should just have the bare minimum actually holding the bushing in box
tap tap tap - pop no worries




Last edited by Sitting_Duck; 02-17-2017 at 03:38 PM.
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Old 02-17-2017, 03:55 PM   #3
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Quote:
Originally Posted by Sitting_Duck View Post
should be fine - I have JB Welded some but came out ok

place the box on you lap or a soft matt/surface to absorb some of the impact
find something correct size to drift out the bushing - that is the trick
a small electrican's screw driver, an old spur gear works well too

something that fits inside the 3mm but will push the bushing out level

tap not wallop the thing and she should come out after a few taps
the soft area just absorbs some impact
don't wallop on hard surface or you can damage the box - even crack it in rare instances

if still no joy and wishing to strip whole box - chuck it in warm water
but shouldn't need to it should tap out ok as long as you are careful
just tap it out on your lap with a correctly fitting tool
(try not to spear yourself if using a screwdriver on your lap)

If you got a lot of epoxy around the bushing inside & outside the box
then cut/break/chip away this pool of epoxy with a scalpel or something
then it should just have the bare minimum actually holding the bushing in box
tap tap tap - pop no worries

Thank you
- I will try to do the screwdriver - lap trick :P
I'm really glad to hear that i should be able to get them out

Are they garbage afterwards or can i install them again?

- Zioux
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Old 02-17-2017, 04:14 PM   #4
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Quote:
Originally Posted by Zioux View Post
Thank you
- I will try to do the screwdriver - lap trick :P
I'm really glad to hear that i should be able to get them out

Are they garbage afterwards or can i install them again?

- Zioux
if they come out ok and you haven't muller'd them or not scratched the inner race they are fine to use again after cleaning any old epoxy off the outer edge

Bearings - often these can get damaged even if you are careful the inner/outer race can get damaged when trying to removed bearings that was glued in

tbh - decent metal bushings you would have to damage them quite a bit to be deemed unusable again. Especially if they run well on the gears being used
G&G bronze bushings really wear after say 12 months and should be replaced but decent metal bushings are fine to use
check wear by seeing how excessive the bushing wobbles about on the shaft of the gears - sounds like gun is quite new so no real wear. If you are careful they are fine to reuse once again

Last edited by Sitting_Duck; 02-17-2017 at 04:16 PM.
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Old 02-17-2017, 04:35 PM   #5
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I use acetone to soften the epoxy up a little before driving it out. It makes it easier to get them out which will reduce the chance of damaging them. Just use a couple of drops on each bushing and let it set for a few minutes before driving them out.
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Old 02-17-2017, 04:40 PM   #6
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Quote:
Originally Posted by Sitting_Duck View Post
if they come out ok and you haven't muller'd them or not scratched the inner race they are fine to use again after cleaning any old epoxy off the outer edge

Bearings - often these can get damaged even if you are careful the inner/outer race can get damaged when trying to removed bearings that was glued in

tbh - decent metal bushings you would have to damage them quite a bit to be deemed unusable again. Especially if they run well on the gears being used
G&G bronze bushings really wear after say 12 months and should be replaced but decent metal bushings are fine to use
check wear by seeing how excessive the bushing wobbles about on the shaft of the gears - sounds like gun is quite new so no real wear. If you are careful they are fine to reuse once again

The Bushings i installed is SHS metal bushings and my guess would be that they have been in the gearbox for 2 weeks
- I wanna take them out because they actually sticks up from the gearbox surface and the shimming is SO BAD.. so i will re epoxy them in the gearbox after i've done the "flatout" (so they don't stick up)..
I'm so sorry for my horrible english.. :/

- Zioux
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Old 02-17-2017, 04:52 PM   #7
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Originally Posted by Zaryk View Post
I use acetone to soften the epoxy up a little before driving it out. It makes it easier to get them out which will reduce the chance of damaging them. Just use a couple of drops on each bushing and let it set for a few minutes before driving them out.

Nice trick - i will do that if i have some acetone
Thank you Zaryk

- Zioux



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