Balance shaft bearing replacement time

Post Reply
User avatar
warnzie
New kid on the block
New kid on the block
Reactions:
Posts: 16
Joined: 19 Oct 2009, 05:09
Balance shaft bearing replacement time

Post by warnzie » 16 Feb 2010, 07:09

I've just ordered the 2 bearings for the balance shaft - 1x ball and 1x needle and also the seal and wondering how long it should take to do...is it a hard job or a simple 1-2hr job. I know the cases don't have to be split thank goodness as im looking at the parts diagram but are the bearings hard to get to or just an push and pull out?

Any advice would be great and any problems i need to look out for would also be appreciated to make my life easier with it. Have replaced numerous bearings but never had a bike with a balance shaft before and a little hesitant as i've havn't seen it in the flesh in the engine yet

Eddie Evans
2016NWAA
2016NWAA
Reactions:
Posts: 461
Joined: 15 Aug 2007, 19:05
Bike Owned: MK3
Location: N Wales
Re: Balance shaft bearing replacement time

Post by Eddie Evans » 16 Feb 2010, 09:03

I think that you will find a lot of info on this if you do a search.

You have to take the clutch casing off and remove the clutch to gain access to the balance shaft.
One of the biggest problems you will have is knocking the needle roller bearing out and my advice is to make the tool that is shown in one of the threads.

It is very likely that you find that the bearing face on the balance shaft itself is damaged and this will either need replacing or repair.

reevo
Site Supporter
Site Supporter
Reactions:
Posts: 106
Joined: 15 Jan 2009, 21:08
Location: walkden, manchester
Re: Balance shaft bearing replacement time

Post by reevo » 21 Feb 2010, 18:22

did mine about 4 week ago, have you checked the balance shaft for wear marks at the needle bearing end?
if the shaft is goosed, wich i suspect it will be, it needs repairing or your new bearings wont last long.
i have posted up the place that does the repair in the what fits what section.

remove the clutch case and the clutch, take the nut off the balance shaft and it will just push out through the generator side.
its unlikly the bearing on the clutch side will need changing ( mine was fine even though the needle bearing was goosed and making a right racket).if your going to change it any way cos you have it, you need to undo the 2 lock tabs that hold it in place, unfortunatly one of them is behind the gear selector gizmo. to get this out, remove the gear lever, undo the 10mm bolts on the gizmo and pull towards you (be care full not to lose any of the bits that sit in the end of the selector drum)the gear selector shaft does not need to come all the way out, just enough to get to the locking tab that holds the bearing in place.
the needle bearing outer case will most probably cause you some trubble, mine did. i read on here that you can use a dremel with cutting disk to assist with removal but i could'nt get mine in. what i did was reamed out behind the bearing case so i could get a bar in behind it and smash it to bits.
if you need any more info, pm me your number and i will give you a ring. best of luck

User avatar
knackeredMk1
Super Moderator
Super Moderator
Reactions:
Posts: 4185
Joined: 03 Nov 2006, 17:41
Bike Owned: Modified Mk1
Re: Balance shaft bearing replacement time

Post by knackeredMk1 » 21 Feb 2010, 18:51

Balancer shaft needle bearing remover tool 3/4 of the way down - viewtopic.php?f=14&t=3484&st=0&sk=t&sd=a

Works easy every time :) .

reevo
Site Supporter
Site Supporter
Reactions:
Posts: 106
Joined: 15 Jan 2009, 21:08
Location: walkden, manchester
Re: Balance shaft bearing replacement time

Post by reevo » 21 Feb 2010, 18:56

[quote="knackeredMk1"]Balancer shaft needle bearing remover tool 3/4 of the way down - viewtopic.php?f=14&t=3484&st=0&sk=t&sd=a

Works easy every time :) .[/quote]
i just seen it on the other thread you posted it on. that thing would of saved me a right load of greaf

hopfully i wont be needing to do it again.


Post Reply