Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 851 / 888 > Rear wheel fitment - help ??

[JONESEY]

just received my 1991 851 rear wheel back from a dealer, after having new cush drive rubbers fitted. Due to a communication fault, the dealer first changed the rear wheel bearings in the rear wheel (how you can confuse changing the bearings with the cush drive is beyond me, 'specially when the new cush drive rubbers were in deloivered in a bag with the wheel.......). On offering the wheel up to the swinging arm and bolting it in, the wheel now locks up solid and will not rotate !! The wheel was free to rotate before it went away. On examination it appears to be the aluminium rear brake caliper bracket that is binding on the rear wheel hub - specifically the RHS bearing housing. All the spacers are in place as they should be. What i'm thinking is that they have driven the bearings too far in the hub thereby preventing the necessary spacers etc from contacting on each other when assembled ?? Any advice will be greatly appreciated as i now have shiny new chain and sprockets on, but am unable to rotate the wheel when it is tightend up.

[nelly]

The bearings sit up against a spacer that runs in between them. Make sure this isn't trapped.
Also check the spacer on the left hand side is the correct way round, taper inwards.

[Douglas851]

Two pictures to show position of bearings in rear wheel

[Jools]

On my 888 there is no spacer on the LHS. I noticed this when Fordie and me changed the rear sprocket. I was expecting there to be a spacer just like the one on my ST, but there wasn't one. I was certain that nothing dropped off when we changed the sprocket but, just in case, we spent about 10 minutes looking all over the garage floor then decided that it didn't have a spacer in the first place.

When the wheel is back in place there is only about 2mm clearance between the sprocket bolts and the swingarm. However, I've asked loads of 888 owners and ex owners and this tiny clearance is normal (I still don't like it mind you).

Obviously, the sprocket bolts are seated in the cush drive. Could it be that the cush rubbers are seated a bit proud (or maybe the wrong ones) and the bolts are now fouling the swingarm - wouldn't take much to take up that 2mm or so clearance....only 2mm or so in fact.

[paynep]

You can't drive the bearings in too far - there is a shoulder in the wheel.

The bearings aren't sitting proud of the wheel are they, as you can get 17mm ID bearings in 12 and 14mm widths........?

[phil_h]

Tell us where you are jonesey, and there might be someone near that can take a look or let you look at their bike.

[jgriff]

You have the wrong bearing in. Take it back to the dealer and tell him to fix it. Then ask him where the hell his mechanics got there trade papers! Off the back of a Cornflakes box I'd say.

Griff

[Iconic944ss]

oops - didnt see your pictures.

I agree with Griff - the picture tells its own story - I can see where the bearing housing has been rubbing against the swing arm / calliper carrier....obviously wrong even to a muppet like me !

[Jools]

Jeez....how can any mechanic not look at that and think summat's wrong.

Now about this spacer, my ST has a conical spacer that fits big diameter to the swingarn, small diameter on the inner race of the bearing. I expected to see the same on my 888 when I took the wheel off fo the first time, but there wasn't one

It came from the dealer like that and there hasn't been one in place for 3000 miles...sounds like I've led a charmed life. Anybody got a part number ???

[JONESEY]

The dealer is adamant it's nothing he's done and there must have been a problem before ! W*nker ! I've got hold of a part number 71410371A which should be the correct bearing. Can anyone confirm that this part number is a 62203 bearing ? 'Cos i can get them free through work, which is obviously cheaper than getting them through a ducati dealer.....