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K100-forum.com » Technical, repair and troubleshooting » Frame, fairing and wheels » How much play?

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1Back to top Go down   How much play? Empty How much play? Tue Dec 04, 2018 4:04 pm

EnJCoop

EnJCoop
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Hi all,
I suspected a faulty crown wheel bearing and took the final drive apart.
I actually couldn't really feel any play in it.
The smaller roller bearing however seemed to have way too much play in it, but then I don't know how much is too much.How much play? Img_1810
This is me squeezing the tapered bearing and the outer race moving a lot it seems to me...
What do you think?
How do I get it off and how do I extract the seat in the other half of the final drive?
Any answers appreciated.
Neal

    

2Back to top Go down   How much play? Empty Re: How much play? Tue Dec 04, 2018 4:09 pm

EnJCoop

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Otherwise the whole thing looked in pretty good shape to me...How much play? Img_1811

    

3Back to top Go down   How much play? Empty Re: How much play? Tue Dec 04, 2018 4:10 pm

EnJCoop

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How much play? Img_1812

    

4Back to top Go down   How much play? Empty Re: How much play? Tue Dec 04, 2018 7:19 pm

Rick G

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The play you get like that means nothing it will reduce to almost nothing when assembled. You can tell more about wear on a roller bearing by looking at the state of the bearing surface of the cup which is the bit that is difficult to get out. To me it looks fairly worn because of the colour of the wearing surface, a dull grey and not bright silver. If you replace that bearing then you will need to reset the gears using shims etc. Best left to an expert.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

5Back to top Go down   How much play? Empty Re: How much play? Tue Dec 04, 2018 7:29 pm

EnJCoop

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Thanks for that. So the play would not account for very small amount of play when trying to move the rear wheel as described in the manual - gripping in the 12 oclock 6 oclock position and pushing/pulling?

    

6Back to top Go down   How much play? Empty Re: How much play? Tue Dec 04, 2018 7:55 pm

Rick G

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It is quite possible as only a small amount of play in the bearing would account for even 1mm of play at the wheel extremities. To me that bearing is on the way out but it is very hard to say when the item is not in my hand. Take it to a bearing place they should know.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

7Back to top Go down   How much play? Empty Re: How much play? Wed Dec 05, 2018 8:48 am

92KK 84WW Olaf

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My friend over here who rebuilds final drives did say once you feel any play at the rear wheel you have trouble and if you get it early you save the final drive. The only part at that point to replace seems to be the bearing. In my case I was sensitive to a very minor difference in feel and had asked him for a second opinion as at that point it felt different but felt like it had no play in it.

I am with RickG on what he posted. The trick on reassembly is to get that point where there is no play but its not binding.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

8Back to top Go down   How much play? Empty Re: How much play? Wed Dec 05, 2018 9:10 am

mike d

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To remove the outer bearing race from the hub requires a 'blind hole' puller. This uses an expanding collet to grip on the fine chamfer on the bearing and a slide hammer to provide the shock to pull the bearing out.

Such as:
 http://sykes-pickavant.com/products/pullers-and-separators/mechanical-pullers-and-kits/856

If you are a member of The BMW Club (UK) then they have a tool hire facility which has the required special tools.

Mike

    

9Back to top Go down   How much play? Empty Re: How much play? Wed Dec 05, 2018 5:11 pm

Snod Blatter

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RicK G wrote:It is quite possible as only a small amount of play in the bearing would account for even 1mm of play at the wheel extremities.
This, I had 1mm of play at the outside of the tyre but to handle the crown wheel bearing you wouldn't have known anything was wrong. The only giveaway is it feels a bit rough when you spin the outer race.

The tapered bearing is loose like that and hardly ever seems to wear, I wouldn't worry about it.


__________________________________________________
1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL, '01 R1100GS
http://justbikethings.blogspot.co.uk/
    

10Back to top Go down   How much play? Empty Re: How much play? Wed Dec 05, 2018 6:53 pm

EnJCoop

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OK I get what you're saying. Thanks for taking the time to reply.

    

11Back to top Go down   How much play? Empty Re: How much play? Wed Dec 05, 2018 6:55 pm

EnJCoop

EnJCoop
Silver member
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mike d wrote:To remove the outer bearing race from the hub requires a 'blind hole' puller. This uses an expanding collet to grip on the fine chamfer on the bearing and a slide hammer to provide the shock to pull the bearing out.

Such as:
 http://sykes-pickavant.com/products/pullers-and-separators/mechanical-pullers-and-kits/856

If you are a member of The BMW Club (UK) then they have a tool hire facility which has the required special tools.

Mike
Thanks Mike. Cheers for the link too!

    

12Back to top Go down   How much play? Empty Re: How much play? Wed Dec 05, 2018 6:59 pm

EnJCoop

EnJCoop
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What do you all think of this? I found it very informative.

    

13Back to top Go down   How much play? Empty Re: How much play? Wed Dec 05, 2018 7:09 pm

Snod Blatter

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It's the best guide around! A guy on here recently cut his old bearing off (or he was going to..?), might be a good way to attack the most difficult part of the process.


__________________________________________________
1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL, '01 R1100GS
http://justbikethings.blogspot.co.uk/
    

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