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Author Topic: Wheel bearings  (Read 1587 times)

Offline Lucky_Lou

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Wheel bearings
« on: March 23, 2009, 03:09:09 PM »
Got an advisory ticket with the MOT saying front wheel bearings on the way out?? only got 30k on the bike, the haynes manual says its a job for BMW only........anyone done them whats the problem or can they be done DIY ta
Lou
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Offline Bob_Roller

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Re: Wheel bearings
« Reply #1 on: March 23, 2009, 03:45:32 PM »
After cleaning or more importantly, bearing replacement, you have shims that may require adjustment.

Between the wheel bearings front and rear, there is a tube between the bearings, and shims are added between the tube and the bearings to get the proper pre-load on the bearings.

I'm not real familiar with the process, so I can't lend much more information on how to proceed with it.
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline montmil

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Re: Wheel bearings
« Reply #2 on: March 23, 2009, 04:10:20 PM »
Lou...

The usual DIY test of the front wheel bearings is pretty simple.

With bike on the center stand, hold the fork legs steady with a knee or leg bone, grip the tire at top and bottom and try to rock the wheel side to side. You don't want any motion.

New wheel bearings are available at a local bearing supply as are the grease seals. Bunch less money than at the BMW stealership. Sizes are listed in the parts fiche. http://www.ascycles.com/Illustrated_catalog/R65(78-85)/catalog_frameset.html

Check the bearing races for pitting and/or rust. Rust? PO's may have been overzealous at the local car wash and forced water into the races.  :'(

The bearings are tapered roller units. Not terribly expensive but unless set-up and installed properly they may get sloppy over time.

Rollin' Bob is correct about the spacers but I'd first try removing the bearings, clean them, re-grease and reinstall with new grease seals. The roller bearings must be fitted with a bit of pre-load; remember, they're tapered bearings.

Bring up the axle torque before you snug up the pinch bolts. I'll bet you'll have a better feel afterwards. BTW, My 1986 VW Cabriolet uses tapered rollers on the rear axles and the pre-load procedure is to snug up the axle nut until the wheel will not turn, then back off about one flat on the axle nut.  [smiley=thumbup.gif]

Monte




« Last Edit: March 23, 2009, 09:00:30 PM by montmil »
Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

Offline Ed Miller

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Re: Wheel bearings
« Reply #3 on: March 24, 2009, 12:40:08 PM »
Quote
Got an advisory ticket with the MOT saying front wheel bearings on the way out?? only got 30k on the bike, the haynes manual says its a job for BMW only........anyone done them whats the problem or can they be done DIY ta
Lou

What's wrong with them?  
Ed Miller
'81 r65
Falls City, OR

Offline Lucky_Lou

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Re: Wheel bearings
« Reply #4 on: March 24, 2009, 02:51:07 PM »
Quote
Quote
Got an advisory ticket with the MOT saying front wheel bearings on the way out?? only got 30k on the bike, the haynes manual says its a job for BMW only........anyone done them whats the problem or can they be done DIY ta
Lou

What's wrong with them?  
The exact wording on the ticket is......
Front wheel bearings are slightly rough [2.3.5b] ?? must say i cannot feel or hear a problem but will sort it one way or another before the next test.
Lou



« Last Edit: March 24, 2009, 02:53:04 PM by Lucky_Lou »
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Offline nhmaf

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Re: Wheel bearings
« Reply #5 on: March 24, 2009, 09:15:54 PM »
I would also try replacing the bearings with ones as close to the same dimensions as possible, and reuse the existing sleeve/spacer(s) installed with the wheel.   Do torque the axle nut prior to cinching down the pinch bolts.   I torque the axle nut to spec, and put the pinch bolts in but do not tighten them up, just finger tight so that the axle can find its "home" - I then take the bike's handlebars and bounce the front end down and up a few times on the garage floor so that the sliders can realign themselves in case I've pulled them a bit to one side.  You can do this with the bike still on the centerstand - then tighten up the pinch bolts.
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Offline Justin B.

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Re: Wheel bearings
« Reply #6 on: March 25, 2009, 01:05:59 AM »
I would imagine they just need a clean and re-pack...
Justin B.

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1981 R100RT - Summer bike, NEKKID!!!

Offline steve hawkins

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Re: Wheel bearings
« Reply #7 on: March 25, 2009, 04:01:19 AM »
I have had an advisory on my front wheel bearing for 3 or 4 years now.

As long as they dont get any worse.

Be worth a 'gander' though.

Cheers
Steve Hawkins R100 (that wants to be an R65)

Offline Ed Miller

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Re: Wheel bearings
« Reply #8 on: March 25, 2009, 03:43:43 PM »
It's a good idea to clean and regrease them when you change tires.  If I forgot new seals I skip it, but I probably get to mine every other tire change.

Ed Miller
'81 r65
Falls City, OR

Offline MrRiden

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Re: Wheel bearings
« Reply #9 on: March 25, 2009, 07:43:59 PM »
Lou
You want a 30203 bearing.[2] You can get it from this stockist http://www.bearing-king.co.uk/product/4905  they have the seals too. If you want a sealed bearing get 3023A. Get the Timken brand or some other than the Made in China ones. Warm the wheel, drive out / in with suitable tool. Pass MOT. Easy Peasy ;)
rich
« Last Edit: March 25, 2009, 07:48:39 PM by MrRiden »
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