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how to remove gearbox input shaft bearing?
https://www.ausmini.com/forums/viewtopic.php?f=2&t=19697		 Page 1 of 1
Author:  mickmini [ Tue May 30, 2006 4:44 pm ]
Post subject:  how to remove gearbox input shaft bearing?
Ok i know it has probably been asked elsewhere before, and i did search :P

i got the input shaft circlip out using borrowed circlip pliers of almost the correct size, but i need some advice on method or tools to "withdraw the bearing" which the good book says is done with "special tool 18G284 and adapters 18G284B".

I am assuming this is some kind of bearing puller. normally i would just find some kind of drift that fits and knock it out, but this one is kinda hard to get to, so advice appreciated.

And yes Kev, i would love to bring it over your place - if only i had the time on a weekend. At least i can do a little each night after work and it slowly gets there - if i know how to do it

cheers

michael
Author:  EST-071 [ Tue May 30, 2006 6:15 pm ]
Post subject: 
I have just done this.
all I did was take the input gear off, took the circlip out, took the diff pinion off then used a piece of timber and a hammer and drifted the main shaft towards the input bearing and it came out pretty easy.
Hope this helps.
Pete
Author:  drmini in aust [ Tue May 30, 2006 7:33 pm ]
Post subject: 
Mick,
Yes I do it just as deluxe_68 says, usually as part of the gearbox stripdown.
If you want the nut undone, do it with the mainshaft's pinion nut, while box is still in one piece.
U need to lock it in 1st & 4th gears... then hold the box from moving.:wink:
Author:  mickmini [ Tue May 30, 2006 9:15 pm ]
Post subject: 
yeah all the nuts are off, circlip is out - i was just a little cautious about whacking things before i knew what to whack 8) i posted my method for holding the gearbox to the workbench elsewhere :wink: like this

"undoing the pinion nut.

After reading the vizard comment about how difficult it was to hold a gearbox down and heave 150ft.lbs of torque onto the pinion nut i was expecting to have difficulties undoing it. So i had a bit of a think and i ended up with this arrangement. It consists of the gearbox upside down on the workbench (which happens to be bolted to the wall and floor for stability) strapped down using a common ratchet tie down strap (this one happens to be rated to 2000kg, and the white rag is just to keep the new strap clean). The first and fourth gears were selected to lock the shaft in place and the appropriate socket was placed on the nut with a breaker bar and the handle of my floor jack for a little extra leverage. A total of about 2.5 ft of leverage meant that this nut just unwound like it had never been tightened to 150ft.lbs :thumb:

maybe it had'nt :smt104

Image
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thanks, i'll let you know how i fare

michael
Author:  mickmini [ Tue May 30, 2006 11:24 pm ]
Post subject: 
yep that whacking worked a treat - 3 bangs and out she came!
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