Author Topic: QD Rear Hub Bearings  (Read 3648 times)

Offline brackenfel

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QD Rear Hub Bearings
« on: 25.04. 2011 08:43 »
Firstly the good news - The A10 passed its MOT last week and the process of enjoying it has at last started. I am now going through the "shake-down" phase to find out what I've missed / failed to do properly but so far only the gear lever has showed signs of making a bid for freedom...
Thanks to all here who have patiently answered my questions over the last year or so...

My question relates to the "other" BSA but apart from the engine it's remarkably similar being the B33. I have the Haynes etc but am having difficulty working out exactly how to remove the rear wheel bearings which are worn. It's a 1954 S/A frame, QD wheel.

Pics below show either side, LH & RH.. Can anyone describe in simple terms how to get the bearings out as I don't want to be attempting to apply force in the wrong direction! The spline side has a LH thread retaining ring which comes out - left in situ at present to stop me losing it!..

Many thanks
1961 A10 650 Golden Flash - Blue
1954 BSA B33
Velocette Viper
Laverda 750 SF1
Kawasaki W650
Buell XB9S
Ariel 350NH & Matchless G3LS in bits...

Offline LJ.

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Re: QD Rear Hub Bearings
« Reply #1 on: 25.04. 2011 09:04 »
I cant help Adrian as I also await with interest answers to your questions.

Funnily though I had my B33 back wheel out... (1953 plunger but same QD wheel) only yesterday, to clean and paint up the inner of rim. My MOT hopefully is only a day or two away. Do you have the spline side rubber ring and opposite side dust cover?

I did notice my bearings were very loose, BUT when pressed up as like fitted in bike with spindle tight... the bearing then felt smooth and okay. I wonder if the arrangement should be like that?
Ride Safely Lads! LJ.
**********************
1940 BSA M20 500cc Girder/Rigid- (SOLD)
1947 BSA M21 600cc Girder/Rigid-Green
1949 BSA A7   500cc Girder/Plunger Star Twin-(SOLD)
1953 BSA B33  500cc Teles/Plunger-Maroon
1961 BSA A10  650cc Golden Flash-Blue
1961 BSA A10  650cc Golden Flash-Red

Offline MG

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Re: QD Rear Hub Bearings
« Reply #2 on: 25.04. 2011 09:24 »
It's been a while since I had the rear hub on the A7 apart, but iirc you only have to remove the retaining rings and can knock them out in either direction, by means of the distance piece between the bearings.
The exploded view might be helpful.

Cheers, Markus
1955 A7 Shooting Star
1956 A10 Golden Flash
1961 Matchless G12 CSR

www.histo-tech.at - Restoration, Repairs, Racing

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Offline brackenfel

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Re: QD Rear Hub Bearings
« Reply #3 on: 25.04. 2011 10:14 »
Hi Markus & LJ,
Many thanks for the diagram Markus.. If I can ask a daft question - is there a retaining ring both sides?? the spline side clearly has slots to remove it, I can see nothing obvious on the other to enable removal....

LJ - yes mine has the rubber ring (had to hack it out as it had perished & stuck the wheel & hub together. The dust cover was on so hard that I had to drill out the rivets (presumably inserted by a PO) holding the two bits together & use a Mole wrench to get the inner part off. There was also a felt ring but that will be on the shopping list too!
Even when fully tightened up there was too much slack in my bearings to get past even the most generous MOT Examiner!

Thanks again,

Adrian
1961 A10 650 Golden Flash - Blue
1954 BSA B33
Velocette Viper
Laverda 750 SF1
Kawasaki W650
Buell XB9S
Ariel 350NH & Matchless G3LS in bits...

Offline Humble Pie

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Re: QD Rear Hub Bearings
« Reply #4 on: 25.04. 2011 13:12 »
Just did this  take the retainers off and they both tap out from each side,, tap it out from the opposite side. I used a piece of round brass stock
1952 A7 Plunger

A10 Trike

Offline trevinoz

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Re: QD Rear Hub Bearings
« Reply #5 on: 25.04. 2011 21:58 »
Adrian,
              The swinging arm hub only has a retaining ring on one side.
    Trev.

Offline brackenfel

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Re: QD Rear Hub Bearings
« Reply #6 on: 26.04. 2011 14:18 »
Thanks Trev,
I presume the other (LHS) side is just some sort of cap & just comes out when you drift the bearing out, or maybe you should try & get it off first? (It doesn't seem keen to move!). I also presume I just drift the central spacer tube out as that at least seems to move....

Thanks again,

Adrian
1961 A10 650 Golden Flash - Blue
1954 BSA B33
Velocette Viper
Laverda 750 SF1
Kawasaki W650
Buell XB9S
Ariel 350NH & Matchless G3LS in bits...

Offline Humble Pie

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Re: QD Rear Hub Bearings
« Reply #7 on: 26.04. 2011 14:36 »
When the bearing comes out the spacer just drops out
1952 A7 Plunger

A10 Trike