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#463453 - 11/15/12 9:27 pm Rear Wheel Bearing Replacement - 1971 Conical Hub  
Joined: Aug 2001
Posts: 6,669
Jon W. Whitley Online content
Jon W. Whitley  Online Content



Joined: Aug 2001
Posts: 6,669
Vermont
Just finished replacing the wheel bearings on my rear wheel which is a conical hub wheel for my 1971 TR6R.

I was careful to ensure they went in nice and square and they look to be seated correctly but when I try to turn the inner race with my fingers they are tight. Is this normal and will everything "loosen" up once the wheel is all back together and rolling? Maybe after a few miles?

I have changed my share of wheel bearings but first time on a conical hub with that neat spacer and just wondering before I completely assemble the rear wheel and re-fit to the bike. I can't recall bearings that I've replaced in the past in my earlier hubs or anywhere else feeling tight like that.

BTW, they are sealed 6204RS bearings (W653) and the inner grease retainers are still in place. The only things changed were the bearings which are brand new and they did spin nice and free before assembly.

TIA


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

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#463470 - 11/15/12 11:50 pm Re: Rear Wheel Bearing Replacement - 1971 Conical Hub [Re: Jon W. Whitley]  
Joined: Jul 2009
Posts: 3,549
Pete R - R.I.P. Offline
In Remembrance
Pete R - R.I.P.  Offline
In Remembrance

Joined: Jul 2009
Posts: 3,549
Vic. Australia
Did the bearings have C3 internal clearance?
Hit each inner race inward,one at a time.You won't have to hit very hard.That should position the timing side bearing and give you some clearance.

#463558 - 11/16/12 4:17 pm Re: Rear Wheel Bearing Replacement - 1971 Conical Hub [Re: Jon W. Whitley]  
Joined: Jan 2004
Posts: 3,517
DMadigan Online content
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DMadigan  Online Content
BritBike Forum member

Joined: Jan 2004
Posts: 3,517
ca, us
The wheel is located on the axle by one bearing, the one with the lock ring. The other floats in the bore. How did you push the bearings in? It should have been the outer race on the lock ring side and inner race on the floating side. Since you are using sealed bearings the grease retainers are not needed for grease but locate the floating bearing. Be sure the outer grease retainer is not loading the bearing against the axle. Tapping the axle with a plastic hammer might loosen the preload.

#463647 - 11/17/12 2:53 am Re: Rear Wheel Bearing Replacement - 1971 Conical Hub [Re: DMadigan]  
Joined: Aug 2001
Posts: 6,669
Jon W. Whitley Online content
Jon W. Whitley  Online Content



Joined: Aug 2001
Posts: 6,669
Vermont
Hi David,

This is a rear wheel I'm working on.


I used a drift, the same dimensions as the O.D. of the bearing and my heavy hammer. The grease retainers were left in place to continue in their function of locating the bearings correctly.

I should make up a threaded rod with washers and spacers to press those in but I made sure I took my time and kept the bearings as even as possible while tapping them in.


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project


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